Ford Escape 2020-2024 Service Manual / Chassis / Steering System / Steering Wheel and Column Electrical Components / Diagnosis and Testing - Steering Wheel and Column Electrical Components

Ford Escape: Steering Wheel and Column Electrical Components / Diagnosis and Testing - Steering Wheel and Column Electrical Components

Diagnostic Trouble Code (DTC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Diagnostic Trouble Code Chart

Module	DTC	Description	Action
PCM	P2534:00	Ignition Switch Run/Start Position Circuit Low: No Sub Type Information	For Conventional Ignition Switch: GO to Pinpoint Test D For Push Button Ignition Switch: GO to Pinpoint Test H
PCM	P2535:00	Ignition Switch Run/Start Position Circuit Low: No Sub Type Information	For Conventional Ignition Switch: GO to Pinpoint Test D For Push Button Ignition Switch: GO to Pinpoint Test H
BCM	B108A:01	Start Button: General Electrical Failure	GO to Pinpoint Test H
BCM	B108A:24	Start Button: Signal Stuck High	GO to Pinpoint Test H
BCM	B108A:9E	Start Button: Stuck On	GO to Pinpoint Test H
BCM	B10F1:14	Key In Circuit:Circuit Short To Ground or Open	GO to Pinpoint Test G
BCM	B1142:29	Ignition Status 1: Signal Invalid	GO to Pinpoint Test C
BCM	B1142:29	Ignition Status 1: Signal Invalid	GO to Pinpoint Test H
BCM	B1240:11	Start Button Mode Indicator: Circuit Short to Ground	GO to Pinpoint Test I
BCM	B1240:15	Start Button Mode Indicator: Circuit Short to Battery or Open	GO to Pinpoint Test J
BCM	B1310:12	Run/Start Control: Circuit Short to Battery	GO to Pinpoint Test C
BCM	B1310:12	Run/Start Control: Circuit Short to Battery	GO to Pinpoint Test H
BCM	B1310:14	Run/Start Control: Circuit Short to Ground or Open	GO to Pinpoint Test C
BCM	B1310:14	Run/Start Control: Circuit Short to Ground or Open	GO to Pinpoint Test H
BCM	B1472:12	Ignition Key Removal Inhibit:Circuit Short To Battery	GO to Pinpoint Test F
BCM	B1472:14	Ignition Key Removal Inhibit:Circuit Short To Ground or Open	GO to Pinpoint Test F
BCM	U300A:01	Ignition Switch: General Electrical Failure	GO to Pinpoint Test B
BCM	U300A:01	Ignition Switch: General Electrical Failure	GO to Pinpoint Test L
SCCM	B112B:04	Steering Wheel Module: System Internal Failure	GO to Pinpoint Test P
SCCM	B112B:44	Steering Wheel Module: Data Memory Failure	GO to Pinpoint Test P
SCCM	B112B:45	Steering Wheel Module: Program Memory Failure	GO to Pinpoint Test P
SCCM	B112B:46	Steering Wheel Module: Calibration / Parameter Memory Failure	GO to Pinpoint Test P
SCCM	B112B:49	Steering Wheel Module: Internal Electronic Failure	GO to Pinpoint Test P
SCCM	B135C:11	Heater Element: Circuit Short To Ground	GO to Pinpoint Test O
SCCM	B135C:13	Heater Element: Circuit Open	GO to Pinpoint Test O
SCCM	U0140:00	Lost Communication With Body Control Module: No Sub Type Information	GO to Pinpoint Test Q
SCCM	U0146:00	Lost Communication With Gateway "A": No Sub Type Information	GO to Pinpoint Test Q
SCCM	U0155:00	Lost Communication With Instrument Panel Cluster Module: No Sub Type Information	GO to Pinpoint Test Q
SCCM	U023A:00	Lost Communication With Image Processing Module "A": No Sub Type Information	GO to Pinpoint Test Q
SCCM	U210A:11	Temperature Sensor: Circuit Short To Ground	GO to Pinpoint Test O
SCCM	U210A:13	Temperature Sensor: Circuit Open	GO to Pinpoint Test O
SCCM	U210A:29	Temperature Sensor: Signal Invalid	GO to Pinpoint Test O
SCCM	U2200:00	Control Module Configuration Memory Corrupt: No Sub Type Information	GO to Pinpoint Test P
SCCM	U3003:A2	Battery Voltage: System Voltage Low	GO to Pinpoint Test M
SCCM	U3003:A3	Battery Voltage: System Voltage High	GO to Pinpoint Test N

Global Customer Symptom Code (GCSC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Symptom	Action
Start/Run/Move > Starting > Ignition Switch/Key > Sticks/Binds	GO to Pinpoint Test E
Start/Run/Move > Starting > Push Button Start > Inoperative	GO to Pinpoint Test I
Start/Run/Move > Starting > Push Button Start > Inoperative	GO to Pinpoint Test K
Stop/Steer/Ride > Steering/Steering Wheel > Performance > Inoperative	GO to Pinpoint Test O

Symptom Charts

Symptom Chart: Ignition Switch - Conventional

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Symptom Chart

Condition	Actions
No power in all ignition switch positions	GO to Pinpoint Test A
No power in ACC	GO to Pinpoint Test B
No power in ON	GO to Pinpoint Test C
No power in START	GO to Pinpoint Test A
Key not detected displays in the message center	REFER to: Passive Anti-Theft System (PATS) (419-01C Passive Anti-Theft System (PATS) - Vehicles With: Keyless Vehicle System, Diagnosis and Testing).
The ignition key cannot be returned to the OFF position	GO to Pinpoint Test E
The ignition key can be turned to the OFF position when the selector lever is not in PARK	GO to Pinpoint Test F
The ignition lock cylinder is difficult to turn	GO to Pinpoint Test E

Symptom Chart: Ignition Switch - Push Button

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Symptom Chart

Condition	Actions
No power in ON	GO to Pinpoint Test H
Key not detected displays in the message center	REFER to: Passive Anti-Theft System (PATS) (419-01C Passive Anti-Theft System (PATS) - Vehicles With: Keyless Vehicle System, Diagnosis and Testing).
The ignition mode indicator is inoperative	GO to Pinpoint Test I
The ignition mode indicator is always on	GO to Pinpoint Test J
Vehicle starts with no IA keyfob present	GO to Pinpoint Test K

Symptom Chart: Heated Steering Wheel

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Symptom Chart

Condition	Actions
The heated steering wheel is inoperative or does not operate correctly	GO to Pinpoint Test O

Pinpoint Tests

PINPOINT TEST A: NO POWER IN ALL IGNITION SWITCH POSITIONS - CONVENTIONAL IGNITION SWITCH

Refer to Wiring Diagrams Cell 13 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

Possible Sources

Fuse
Wiring, terminals or connectors
Ignition switch
BCM

Visual Inspection and Pre-checks

Inspect the battery and battery cables.
Inspect the BCM fuse 4 (10A).

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

A1 CHECK THE VEHICLE BATTERY

Carry out the Battery Condition Test.
REFER to: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).

Is the battery OK?

Yes

GO to A2

No	CORRECT the battery condition.

A2 CHECK FOR VOLTAGE TO THE IGNITION SWITCH

Ignition OFF.

Disconnect Ignition Switch C250 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C250-4 Ground

Is the voltage greater than 11 volts?

Yes

INSTALL a new ignition switch.
REFER to: Ignition Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	VERIFY the BCM fuse 4 (10A) is OK. If OK, GO to A3 If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

A3 CHECK THE IGNITION SWITCH VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Disconnect BCM C2280D .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C250-4 C2280D-24

Is the resistance less than 3 ohms?

Yes

GO to A4

No	REPAIR the circuit.

A4 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

INSTALL a new BCM. Refer to the appropriate Removal and Installation procedure in Section 419-10.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST B: NO POWER IN ACC - CONVENTIONAL IGNITION SWITCH

Refer to Wiring Diagrams Cell 13 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
BCM U300A:01	Ignition Switch: General Electrical Failure	This DTC sets if the BCM detects an invalid combination from the conventional ignition switch input circuits.

Possible Sources

Wiring, terminals or connectors
Ignition switch
BCM

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

B1 CHECK FOR BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) U300A:01

Ignition ON.

Using a diagnostic scan tool, carry out the BCM self-test.

Is DTC U300A:01 present?

Yes

GO to Pinpoint Test L

GO to B2

B2 CHECK FOR VOLTAGE TO THE BCM (BODY CONTROL MODULE) WITH THE IGNITION SWITCH IN THE ACC POSITION

Ignition OFF.

Disconnect BCM C2280D .

Accessory ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280D-35 Ground

Is the voltage greater than 11 volts?

Yes

GO to B4

GO to B3

B3 CHECK THE IGNITION ACC CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect Ignition Switch C250 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280D-35 C250-6

Is the resistance less than 3 ohms?

Yes

INSTALL a new ignition switch.
REFER to: Ignition Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	REPAIR the circuit.

B4 CHECK FOR VOLTAGE TO THE BCM (BODY CONTROL MODULE) WITH THE IGNITION SWITCH IN THE ON POSITION

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280D-35 Ground

Is the voltage greater than 11 volts?

Yes

GO to B5

No	INSTALL a new ignition switch. REFER to: Ignition Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

B5 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

INSTALL a new BCM. Refer to the appropriate Removal and Installation procedure in Section 419-10.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST C: NO POWER IN ON - CONVENTIONAL IGNITION SWITCH

Refer to Wiring Diagrams Cell 13 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
BCM B1310:12	Run/Start Control: Circuit Short To Battery	Sets when the BCM detects a short to voltage from the BJB run/start relay control circuit. When set, the control side of the run/start relay is disabled via the Field Effect Transistor (FET). Once the condition that caused the DTC to set is repaired, the BCM must pass a self-test in order for the DTC to clear and the system to resume normal operation.
BCM B1310:14	Run/Start Control: Circuit Short To Ground Or Open	The BCM continuously monitors the control side of the RUN/START relay in the BJB . This DTC is set if the BCM detects an open or a short to ground on the control side of the RUN/START relay. When this DTC sets, the BCM disables the control side of the RUN/START relay FET. Once the condition that caused the DTC to set is repaired, the BCM must pass a self-test in order for the DTC to clear and the system to resume normal operation.
BCM B1142:29	Ignition Status 1: Signal Invalid	Sets when the BCM does not receive a valid ignition signal during a BCM self-test.

Possible Sources

Network concern
Wiring, terminals or connectors
Ignition switch
BCM

Visual Inspection and Pre-checks

Inspect the BCM fuse 4 (10A) .

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

C1 CHECK FOR BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) U300A:01

Using a diagnostic scan tool, carry out the BCM self-test.

Is DTC U300A:01 present?

Yes

GO to Pinpoint Test L

GO to C2

C2 CHECK FOR BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B1310:12 OR B1310:14

Using a diagnostic scan tool, carry out the BCM self-test.

Is DTC B1310:12 or B1310:14 present?

Yes

GO to C6

GO to C3

C3 CHECK FOR VOLTAGE TO THE BCM (BODY CONTROL MODULE) WITH THE IGNITION SWITCH IN THE ON POSITION

Ignition OFF.

Disconnect BCM C2280D .

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280D-34 Ground

Is the voltage greater than 11 volts?

Yes

GO to C6

GO to C4

C4 CHECK THE IGNITION ON-DESIGNATED INPUT CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect Ignition Switch C250 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280D-34 Ground

Is the resistance less than 3 ohms?

Yes

REPAIR the circuit.

GO to C5

C5 CHECK THE IGNITION ON-DESIGNATED INPUT CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280D-34 C250-2

Is the resistance less than 3 ohms?

Yes

INSTALL a new ignition switch.
REFER to: Ignition Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	REPAIR the circuit.

C6 CHECK THE BJB (BATTERY JUNCTION BOX) RUN/START RELAY CONTROL CIRCUIT FOR A FOR A SHORT TO GROUND

Ignition OFF.

Disconnect BCM C2280E .

Disconnect BJB C1035A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280E-36 Ground

Is the resistance less than 3 ohms?

Yes

REPAIR the circuit.

GO to C7

C7 CHECK THE BJB (BATTERY JUNCTION BOX) RUN/START RELAY CONTROL CIRCUIT FOR A FOR A SHORT TO VOLTAGE

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280E-36 Ground

Is any voltage present?

Yes

REPAIR the circuit.

GO to C8

C8 CHECK THE BJB (BATTERY JUNCTION BOX) RUN/START RELAY CONTROL CIRCUIT FOR A FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280E-36 C1035A-33

Is the resistance less than 3 ohms?

Yes

GO to C9

No	REPAIR the circuit.

C9 CARRY OUT A NETWORK TEST

Connect BCM C2280E .

Connect BJB C1035A .

Using a diagnostic scan tool, perform the network test.

Do the IPC and the BCM pass the network test?

Yes

GO to C10

No	DIAGNOSE the network concern. REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

C10 CHECK VOLTAGE SUPPLY TO THE BCM (BODY CONTROL MODULE)

Ignition OFF.

Disconnect BCM C2280A .

Ignition ON.

Measure:

Positive Lead Measurement / Action Negative Lead

C2280A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to C12

GO to C11

C11 CHECK THE BCM (BODY CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Disconnect BCM C2280A .

Measure:

Positive Lead Measurement / Action Negative Lead

C2280A-1 C1617C-1

Is the resistance LESS than 3 ohms?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, REPLACE the BCM.
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
TEST the system for normal operation. If the concern is still present, GO to C12

No	REPAIR the circuit.

C12 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM. Refer to the appropriate Removal and Installation procedure in Section 419-10.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST D: NO POWER IN START - CONVENTIONAL IGNITION SWITCH

Refer to Wiring Diagrams Cell 13 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PCM P2534:00	Ignition Switch On/Start Position Circuit Low: No Sub Type Information	This DTC sets if the PCM detects a low voltage signal from the ignition switch input circuits.
PCM P2535:00	Ignition Switch On/Start Position Circuit High: No Sub Type Information	This DTC sets if the PCM detects a high voltage signal from the ignition switch input circuits.

Possible Sources

Wiring, terminals or connectors
Ignition switch
PCM

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

D1 CHECK FOR PCM (POWERTRAIN CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) P2534 OR P2535

Ignition ON.

Using a diagnostic scan tool, carry out the PCM self-test.

Is DTC P2534 or P2535 present?

Yes

For DTC P2534, GO to D2
For DTC P2535, GO to D5

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

D2 CHECK FOR VOLTAGE TO THE PCM (POWERTRAIN CONTROL MODULE) WITH THE IGNITION SWITCH IN THE START POSITION

Ignition OFF.

Disconnect PCM C175B 1.5L .

Place the ignition switch in the START position.

Measure:

Positive Lead Measurement / Action Negative Lead

C175B-45 Ground

Is the voltage greater than 11 volts?

Yes

GO to D5

GO to D3

D3 CHECK THE IGNITION START CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect Ignition Switch C250 .

Measure:

Positive Lead Measurement / Action Negative Lead

C175B-45 C250-1

Is the resistance less than 3 ohms?

Yes

GO to D4

No	REPAIR the circuit.

D4 CHECK THE IGNITION START CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Measure:

Positive Lead Measurement / Action Negative Lead

C175B-45 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to D5

No	REPAIR the circuit.

D5 CHECK THE IGNITION START CIRCUIT FOR A SHORT TO VOLTAGE

Ignition ON.

Measure:

Positive Lead Measurement / Action Negative Lead

C175B-45 Ground

Is any voltage present?

Yes

REPAIR the circuit.

GO to D6

D6 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PCM , BCM and ignition switch connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

VIN required to access Guided Routine (PCM)

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST E: THE IGNITION KEY CANNOT BE RETURNED TO THE OFF POSITION

Refer to Wiring Diagrams Cell 37 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

Possible Sources

Wiring, terminals or connectors
Ignition switch
Ignition lock cylinder
Key Release Interlock Actuator
Selector lever assembly

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

E1 CHECK FOR AN ENERGIZED KEY RELEASE INTERLOCK ACTUATOR

Disconnect BCM fuse 4 (10A).

Attempt to turn the ignition lock cylinder to the ON position and then back to the OFF-LOCK position and remove the key.

Can the ignition lock cylinder be turned to the OFF-LOCK position and the key removed?

Yes

GO to E3

GO to E2

E2 CHECK THE IGNITION SWITCH AND KEY RELEASE INTERLOCK ACTUATOR FOR MECHANICAL DAMAGE

Remove the ignition switch.
REFER to: Ignition Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

Attempt to turn the ignition lock cylinder to the OFF-LOCK position and remove the ignition key.

Does the ignition lock cylinder turn to the OFF-LOCK position and can the key be removed?

Yes

INSTALL a new ignition switch.
REFER to: Ignition Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	INSTALL a new ignition lock cylinder. REFER to: Ignition Lock Cylinder Housing (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

E3 CHECK THE KEY RELEASE INTERLOCK ACTUATOR CIRCUIT FOR A SHORT TO GROUND

NOTE: The following pinpoint test step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

Connect BCM fuse 4 (10A).

Select PARK.

Disconnect Key Release Interlock Actuator C2434 .

Connect:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2434-1 C2434-2

Does the test lamp illuminate?

Yes

GO to E4

No	INSTALL a new Key Release Interlock Actuator. REFER to: Ignition Lock Cylinder Housing (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

E4 CHECK THE KEY RELEASE INTERLOCK ACTUATOR CONTROL CIRCUIT FOR A SHORT TO GROUND

Disconnect BCM C2280D .

Disconnect Key Release Interlock Actuator C2434 .

Connect:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2434-2 Ground

Is the resistance LESS than 3 ohms?

Yes

REPAIR the circuit.

GO to E5

E5 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM. Refer to the appropriate Removal and Installation procedure in Section 419-10.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST F: THE IGNITION KEY CAN BE TURNED TO THE OFF POSITION WHEN THE SELECTOR LEVER IS NOT IN PARK

Refer to Wiring Diagrams Cell 37 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
BCM B1472:12	Ignition Key Removal Inhibit: Circuit Short To Battery	Sets when the BCM detects a short to voltage from the key removal inhibit solenoid control circuit.
BCM B1472:14	Ignition Key Removal Inhibit: Circuit Short To Ground Or Open	Sets when the BCM detects an open from the key removal inhibit solenoid control circuit.

Possible Sources

Wiring, terminals or connectors
Ignition switch
Selector lever assembly
BCM

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTE: The following Pinpoint Test uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

F1 CHECK THE KEY RELEASE INTERLOCK ACTUATOR CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect Key Release Interlock Actuator C2434 .

Set the park brake.

Select NEUTRAL.

Connect:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2434-1 C2434-2

Is the test lamp illuminated?

Yes

INSTALL a new Key Release Interlock Actuator.
REFER to: Ignition Lock Cylinder Housing (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

GO to F2

F2 CHECK THE KEY RELEASE INTERLOCK ACTUATOR CONTROL CIRCUIT FOR AN OPEN

Disconnect BCM C2280D .

Disconnect Key Release Interlock Actuator C2434 .

Measure:

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2434-2 C2280D-17

Is the resistance less than 3 ohms on each circuit?

Yes

GO to F3

No	REPAIR the circuit.

F3 CHECK THE KEY RELEASE INTERLOCK ACTUATOR GROUND CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect C2280D .

Disconnect C2434 .

Connect:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2434-2 Ground

Does the test lamp illuminate?

Yes

REPAIR the circuit.

GO to F4

F4 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM. Refer to the appropriate Removal and Installation procedure in Section 419-10.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST G: B10F1:14

Refer to Wiring Diagrams Cell 37 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
BCM B10F1:14	Key In Switch: Circuit Short To Ground Or Open	Sets when the BCM detects a short to ground or open circuit from the key in switch.

Possible Sources

Wiring, terminals or connectors
Ignition switch
BCM

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

G1 CHECK THE KEY IN CIRCUIT FOR SHORT TO GROUND

Ignition OFF.

Disconnect Ignition switch C250 .

Disconnect BCM C2280D .

Set the park brake.

Select NEUTRAL.

Connect:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280D-22 Ground

Is the resistance less than 3 ohms?

Yes

REPAIR the circuit

GO to G2

G2 CHECK THE KEY IN CIRCUIT FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280D-22 C2280D-22 C250-3

Is the resistance less than 3 ohms ?

Yes

GO to G3

No	REPAIR the circuit.

G3 CHECK THE KEY IN CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect C2280D .

Disconnect C250 .

Connect:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280D-22 C2280D-22 Ground

Does the test lamp illuminate?

Yes

REPAIR the circuit.

GO to G4

G4 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST H: NO POWER IN ON - PUSH BUTTON IGNITION SWITCH

Refer to Wiring Diagrams Cell 13 for schematic and connector information. Refer to Wiring Diagrams Cell 20 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PCM P2534:00	Ignition Switch On/Start Position Circuit Low: No Sub Type Information	This DTC sets if the PCM detects a low voltage signal from the ignition switch input circuits.
PCM P2535:00	Ignition Switch On/Start Position Circuit High: No Sub Type Information	This DTC sets if the PCM detects a high voltage signal from the ignition switch input circuits.
BCM B108A:01	Start Button: General Electrical Failure	Sets continuous when the BCM detects a fault from one of the ignition switch input circuits.
BCM B108A:24	Start Button: Signal Stuck High	Sets continuous when the BCM detects a fault from one of the ignition switch input circuits.
BCM B108A:9E	Start Button: Stuck On	Sets continuous when the BCM detects only one switch input circuit indicating open when the start button is released.
BCM B1142:29	Ignition Status 1: Signal Invalid	Sets during the on-demand self-test when the BCM detects a fault from one of the ignition switch input circuits.
BCM B1310:12	Run/Start Control: Circuit Short To Battery	Sets when the BCM detects a short to voltage on the BJB run/start relay control circuit. When set, the control side of the run/start relay is disabled via the Field Effect Transistor (FET) in the BCM . Once the condition that caused the DTC to set is repaired, the BCM must pass a self-test in order for the DTC to clear and the system to resume normal operation.
BCM B1310:14	Run/Start Control: Circuit Short To Ground Or Open	The BCM continuously monitors the control side of the run/start relay in the BJB . This DTC is set if the BCM detects an open or a short to ground on the control side of the run/start relay. When this DTC sets, the BCM disables the control side of the RUN/START relay FET. Once the condition that caused the DTC to set is repaired, the BCM must pass a self-test in order for the DTC to clear and the system to resume normal operation.

Possible Sources

Battery voltage concern
Fuse
Wiring, terminals or connectors
PATS concern
Push button ignition switch
BCM

Visual Inspection and Pre-checks

Inspect the battery and battery cables.
Inspect the BCM fuse 4 (10A).

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

H1 CHECK THE VEHICLE BATTERY

Carry out the Battery Condition Test.
REFER to: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).

Is the battery OK?

Yes

GO to H2

No	CORRECT the battery condition.

H2 CHECK FOR BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B1310:12 OR B1310:14

Using a diagnostic scan tool, carry out the BCM self-test.

Is DTC B1310:12 or B1310:14 present?

Yes

GO to H17

GO to H3

H3 CHECK FOR IGNITION ON MODE

NOTE: If DTC B108A:01, B108A:24, B108A:9E or B1142:29 is present, go to step H5. Press and release the START/STOP button while monitoring the ignition mode indicator at the top of the button.

Does the ignition mode indicator flash on and off continuously?

Yes

GO to H17

GO to H4

H4 CHECK FOR A PATS (PASSIVE ANTI-THEFT SYSTEM) CONCERN

Press the START/STOP button while monitoring the message center.

Does No key detected display in the message center?

Yes

REFER to: Passive Anti-Theft System (PATS) (419-01C Passive Anti-Theft System (PATS) - Vehicles With: Keyless Vehicle System, Diagnosis and Testing).

GO to H5

H5 CHECK THE IGNITION SWITCH 1 (START_STOP_1) PID (PARAMETER IDENTIFICATION)

Using a diagnostic scan tool, view the BCM Parameter Identification (PIDs).

Access the BCM and monitor the START_STOP_1 PID
while pressing and releasing the START/STOP button.

Does the PID change state when the START/STOP button is pressed and released?

Yes

GO to H12

No	VERIFY BCM fuse 4 (10A) is OK. If OK, GO to H6 If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

H6 CHECK THE START/STOP 1 INPUT CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect BCM C2280D .

Disconnect PCM C175B (1.5L), C1551B (2.0L) .

Disconnect Push Button Ignition Switch C2195 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2195-1 Ground

Is any voltage present?

Yes

REPAIR the circuit.

GO to H7

H7 CHECK THE START/STOP 1 INPUT CIRCUIT FOR A SHORT TO GROUND

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2195-1 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to H8

No	REPAIR the circuit.

H8 BYPASS THE PUSH BUTTON IGNITION SWITCH WHILE MONITORING THE IGNITION SWITCH 1 (START_STOP_1) PID (PARAMETER IDENTIFICATION)

Connect BCM C2280D .

Using a diagnostic scan tool, view the BCM Parameter Identification (PIDs).

Access the BCM and monitor the START_STOP_1 PID

Connect:
Click to display connectors

Lead 1 Measurement / Action Lead 2

C2195-1 C2195-4

Remove the fused jumper wire.

Does the PID indicate the START/STOP button is pressed with the fused jumper wire connected?

Yes

INSTALL a new push button ignition switch.
REFER to: Ignition Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

GO to H9

H9 CHECK FOR VOLTAGE TO THE IGNITION SWITCH

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2195-4 Ground

Is the voltage greater than 11 volts?

Yes

GO to H11

GO to H10

H10 CHECK THE IGNITION SWITCH VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Disconnect BCM C2280D .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2195-4 C2280D-24

Is the resistance less than 3 ohms?

Yes

GO to H23

No	REPAIR the circuit.

H11 CHECK THE BCM (BODY CONTROL MODULE) START/STOP 1 INPUT CIRCUIT FOR AN OPEN

Disconnect BCM C2280D .

Disconnect PCM C1381B (2.5L), C1551B (2.0L), C175B (1.5L).

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2195-1 C2280D-21

2.5L HEV

Positive Lead Measurement / Action Negative Lead

C1381B-42 C2195-1

2.0L

Positive Lead Measurement / Action Negative Lead

C1551B-45 C2195-1

1.5L

Positive Lead Measurement / Action Negative Lead

C175B-45 C2195-1

Is the resistance less than 3 ohms?

Yes

If a BCM DTC was recorded, GO to H23 If a PCM DTC was recorded, GO to H24

No	REPAIR the circuit.

H12 CHECK THE IGNITION SWITCH 2 (START_STOP_2) PID (PARAMETER IDENTIFICATION)

Using a diagnostic scan tool, view the BCM Parameter Identification (PIDs).

Access the BCM and monitor the START_STOP_2 PID
while pressing and releasing the START/STOP button.

Does the PID change state when the START/STOP button is pressed and released?

Yes

GO to H23

GO to H13

H13 CHECK THE BCM (BODY CONTROL MODULE) START/STOP 2 INPUT CIRCUIT FOR A SHORT TO GROUND

Disconnect BCM C2280D .

Disconnect Push Button Ignition Switch C2195 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2195-6 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to H14

No	REPAIR the circuit.

H14 BYPASS THE PUSH BUTTON IGNITION SWITCH WHILE MONITORING THE IGNITION SWITCH 2 (START_STOP_2) PID (PARAMETER IDENTIFICATION)

Connect BCM C2280D .

Using a diagnostic scan tool, view the BCM Parameter Identification (PIDs).

Access the BCM and monitor the START_STOP_2 PID

Connect:
Click to display connectors

Lead 1 Measurement / Action Lead 2

C2195-6 Ground

Remove the fused jumper wire.

Does the PID indicate the START/STOP button is pressed with the fused jumper wire connected?

Yes

GO to H15

GO to H16

H15 CHECK THE IGNITION SWITCH GROUND CIRCUIT FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2195-4 C2195-3

Is the voltage greater than 11 volts?

Yes

INSTALL a new push button ignition switch.
REFER to: Ignition Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	REPAIR the circuit.

H16 CHECK THE BCM (BODY CONTROL MODULE) START/STOP 2 INPUT CIRCUIT FOR AN OPEN

Disconnect BCM C2280D .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2195-6 C2280D-61

Is the resistance less than 3 ohms?

Yes

GO to H23

No	REPAIR the circuit.

H17 CHECK THE BJB (BATTERY JUNCTION BOX) RUN/START RELAY CONTROL CIRCUIT FOR A FOR A SHORT TO GROUND

Ignition OFF.

Disconnect BCM C2280E .

Disconnect BJB C1035A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280E-36 Ground

Is the resistance less than 3 ohms?

Yes

REPAIR the circuit.

GO to H18

H18 CHECK THE BJB (BATTERY JUNCTION BOX) RUN/START RELAY CONTROL CIRCUIT FOR A FOR A SHORT TO VOLTAGE

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280E-36 Ground

Is any voltage present?

Yes

REPAIR the circuit.

GO to H19

H19 CHECK THE BJB (BATTERY JUNCTION BOX) RUN/START RELAY CONTROL CIRCUIT FOR A FOR AN OPEN

Ignition OFF.

Disconnect BJB C1035A .

Disconnect BCM C2280E . Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280E-36 C1035A-33

Is the resistance less than 3 ohms?

Yes

GO to H20

No	REPAIR the circuit.

H20 CARRY OUT A NETWORK TEST

Connect BCM C2280E .

Connect BJB C1035A .

Using a diagnostic scan tool, perform the network test.

Do the IPC and the BCM pass the network test?

Yes

GO to H21

No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

H21 CHECK VOLTAGE SUPPLY TO THE BCM (BODY CONTROL MODULE)

Ignition OFF.

Disconnect BCM C2280A .

Ignition ON.

Measure:

Positive Lead Measurement / Action Negative Lead

C2280A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to H23

GO to H22

H22 CHECK THE BCM (BODY CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Measure:

Positive Lead Measurement / Action Negative Lead

C2280A-1 High Current Fuse Box, Terminal 1

Is the resistance LESS than 3 ohms?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, REPLACE the BJB . TEST the system for normal operation. If the concern is still present, GO to H23

No	REPAIR the circuit.

H23 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM. Refer to the appropriate Removal and Installation procedure in Section 419-10.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

H24 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Disconnect and inspect all PCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PCM connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

VIN required to access Guided Routine (PCM)

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST I: THE IGNITION MODE INDICATOR IS INOPERATIVE

Refer to Wiring Diagrams Cell 20 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
BCM B1240:11	Start Button Mode Indicator: Circuit Short To Ground	Sets when the BCM detects a short to ground from the ignition mode status indicator circuit.

Possible Sources

Wiring, terminals or connectors
Push button ignition switch
BCM

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

I1 CHECK FOR VOLTAGE TO THE IGNITION MODE INDICATOR

Start the engine.

Disconnect Push Button Ignition Switch C2195 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2195-2 Ground

Is the voltage greater than 11 volts?

Yes

GO to I4

GO to I2

I2 CHECK THE IGNITION MODE INDICATOR VOLTAGE CIRCUIT FOR A SHORT TO GROUND

Connect Push Button Ignition Switch C2195 .

Ignition OFF.

Disconnect BCM C2280D .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2195-2 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to I3

No	REPAIR the circuit.

I3 CHECK THE IGNITION MODE INDICATOR VOLTAGE CIRCUIT FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2195-2 C2280D-20

Is the resistance less than 3 ohms?

Yes

GO to I5

No	REPAIR the circuit.

I4 CHECK THE IGNITION MODE INDICATOR GROUND CIRCUIT FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2195-2 C2195-3

Is the voltage greater than 11 volts?

Yes

INSTALL a new push button ignition switch.
REFER to: Ignition Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	REPAIR the circuit.

I5 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

INSTALL a new BCM. Refer to the appropriate Removal and Installation procedure in Section 419-10.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST J: THE IGNITION MODE INDICATOR IS ALWAYS ON

Refer to Wiring Diagrams Cell 20 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
BCM B1240:15	Start Button Mode Indicator: Circuit Short To Battery Or Open	Sets when the BCM detects a short to voltage from the ignition mode status indicator circuit.

Possible Sources

Wiring, terminals or connectors
Push button ignition switch
BCM

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

J1 ISOLATE THE BCM (BODY CONTROL MODULE)

Ignition ON.

Disconnect BCM C2280D .

Observe the ignition mode indicator.

Does the ignition mode indicator continue to illuminate?

Yes

GO to J2

GO to J3

J2 CHECK THE IGNITION MODE INDICATOR CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect Push Button Ignition Switch C2195 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2195-2 Ground

Is any voltage present?

Yes

REPAIR the circuit.

No	INSTALL a new ignition switch. REFER to: Ignition Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

J3 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM. Refer to the appropriate Removal and Installation procedure in Section 419-10.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST K: VEHICLE STARTS WITH NO IA KEYFOB PRESENT

Refer to Wiring Diagrams Cell 20 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

Possible Sources

Wiring, terminals or connectors
IPC
Brake Shift Interlock
BCM

K1 CHECK FOR BCM (BODY CONTROL MODULE) OR IPC (INSTRUMENT PANEL CLUSTER) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON.

Using a diagnostic scan tool, clear any BCM or IPC Diagnostic Trouble Codes (DTCs).

Using a diagnostic scan tool, carry out the BCM and IPC self-test.

Are any BCM or IPC Diagnostic Trouble Codes (DTCs) present?

Yes

REFER to the appropriate Workshop Manual section DTC chart and resolve any BCM or IPC Diagnostic Trouble Codes (DTCs) prior to further repairs.

GO to K2

K2 VERIFY THE PRNDL "P" ILLUMINATES WHEN SHIFTED TO PARK.

Place the Transmission Selector Lever in the Park position

Verify the PRNDL "P" is illuminated indicating the transmission is in the Park position.

Is the P illuminated?

Yes

GO to K3

No	REFER to the Symptom Chart in section 413-01. REFER to: Instrumentation, Message Center and Warning Chimes (413-01 Instrumentation, Message Center and Warning Chimes, Diagnosis and Testing).

K3 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM. Refer to the appropriate Removal and Installation procedure in Section 419-10.

No	The system is operating correctly at this time. The concern may have been caused by wiring connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST L: U300A:01

Refer to Wiring Diagrams Cell 13 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
BCM U300A:01	Ignition Switch: General Electrical Failure	Sets when the BCM detects an invalid combination from the ignition switch input circuits, such as a voltage signal only from the ON-designated circuit, a voltage signal only from the START-designated circuit or a voltage signal from ACC and START-designated circuits at the same time.

Possible Sources

Wiring, terminals or connectors
Ignition switch
BCM

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

L1 CHECK THE IGNITION SWITCH CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect BCM C2280D .

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C2280D-35		Ground
C2280D-34		Ground
C2280D-4		Ground

Is any voltage present?

Yes

REPAIR the circuit in question.

GO to L2

L2 CHECK THE BCM (BODY CONTROL MODULE) IGNITION SWITCH INPUT CIRCUITS FOR VOLTAGE

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280D-35 Ground

C2280D-34 Ground

While placing the ignition switch to the START position, measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280D-34 Ground

C2280D-4 Ground

Are the voltages greater than 11 volts?

Yes

GO to L4

GO to L3

L3 CHECK THE IGNITION SWITCH CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect Ignition Switch C250 .

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C2280D-35		C250-6
C2280D-34		C250-2
C2280D-4		C250-1

Are the resistances less than 3 ohms?

Yes

INSTALL a new ignition switch.
REFER to: Ignition Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	REPAIR the circuit in question.

L4 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM. Refer to the appropriate Removal and Installation procedure in Section 419-10.

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST M: U3003:A2

Refer to Wiring Diagrams Cell 13 for schematic and connector information.

Normal Operation and Fault Conditions

The SCCM continuously monitors input voltage for correct operation. If voltage outside of defined limits is detected by the SCCM , the applicable DTC sets. DTC U3003:A2 can set if the vehicle battery has been discharged. The vehicle battery may become discharged due to excessive load(s) on the charging system from aftermarket accessories or if the vehicle has been left unattended with the accessories on. REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCCM U3003:A2	Battery Voltage: System Voltage Low	Sets in continuous memory if the SCCM detects battery voltage below 8 volts on the battery voltage supply circuit.

Possible Sources

Battery
Wiring, terminals or connectors
Fuse
Charging system
SCCM

Visual Inspection and Pre-checks

Make sure the vehicle battery terminals and cables are free of corrosion or other contaminates.
Make sure the vehicle battery terminals are tightened to the correct torque specifications.

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

M1 CHECK FOR SCCM (STEERING COLUMN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON.

Using a diagnostic scan tool, clear the SCCM Diagnostic Trouble Codes (DTCs).

Using a diagnostic scan tool, carry out the SCCM self-test.

Is DTC U3003:A2 still present?

Yes

GO to M2

No	The system is operating normally at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.

M2 CHECK FOR CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS) IN THE PCM (POWERTRAIN CONTROL MODULE)

Using a diagnostic scan tool, carry out the PCM KOEO and KOER self-tests.

Are any charging system Diagnostic Trouble Codes (DTCs) present in the PCM ?

Yes

DIAGNOSE the charging system Diagnostic Trouble Codes (DTCs). Refer to the appropriate section in Group 414 for the procedure.

GO to M3

M3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE

Ignition OFF.

Carry out the Battery Condition Test.
REFER to: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).

Is the battery OK?

Yes

GO to M4

No	CHARGE the battery and REPEAT the battery condition test. If the battery does not pass the battery condition test, INSTALL a new battery. REFER to: Battery (414-01 Battery, Mounting and Cables, Removal and Installation).

M4 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR HIGH RESISTANCE

Measure and record the battery voltage.

Disconnect SCCM C226A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C226A-2 Ground

Is the voltage within 0.2 volt of the recorded battery voltage?

Yes

GO to M5

No	REPAIR the circuit.

M5 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) GROUND CIRCUIT FOR HIGH RESISTANCE

Disconnect the negative battery cable.
REFER to: Battery Cables - 1.5L EcoBoost (132kW/180PS) – I3 (Y1) (414-01 Battery, Mounting and Cables, Removal and Installation).
REFER to: Battery Cables - 2.0L EcoBoost (177kW/240PS) – MI4 (414-01 Battery, Mounting and Cables, Removal and Installation).

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C226A-8 Ground

Is the resistance less than 3 ohms?

Yes

CONNECT the battery negative cable. GO to M6

No	REPAIR the circuit. CONNECT the battery negative cable.

M6 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION

Disconnect and inspect the SCCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCCM connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST N: U3003:A3

Refer to Wiring Diagrams Cell 13 for schematic and connector information.

Normal Operation and Fault Conditions

The SCCM continuously monitors input voltage for correct operation. If voltage outside of defined limits is detected by the SCCM , the applicable DTC sets. DTC U3003:A3 can set if the vehicle has been recently jump started or the vehicle battery has been recently charged. REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCCM U3003:A3	Battery Voltage: System Voltage High	Sets in continuous memory if the SCCM detects battery voltage above 19 volts on the battery voltage supply circuit.

Possible Sources

Wiring, terminals or connectors
Charging system
SCCM

N1 CHECK FOR HIGH BATTERY VOLTAGE AND/OR CHARGING SYSTEM DTC (DIAGNOSTIC TROUBLE CODE) IN THE PCM (POWERTRAIN CONTROL MODULE)

Ignition ON.

Using a diagnostic scan tool, carry out the PCM KOEO and KOER self-tests.

Are any voltage and/or charging system Diagnostic Trouble Codes (DTCs) present?

Yes

DIAGNOSE the charging system. REFER to the appropriate Diagnosis and Testing in Section 414-00.

GO to N2

N2 CHECK THE BATTERY VOLTAGE

Turn off all interior/exterior lights and accessories.

Start and run the engine at approximately 2,000 rpm for 3 minutes while monitoring the battery voltage.

Does the battery voltage rise to 16.5 volts or higher?

Yes

DIAGNOSE the charging system.
REFER to: Charging System - 1.5L EcoBoost (132kW/180PS) – I3 (Y1) (414-00 Charging System - General Information, Diagnosis and Testing).
REFER to: Charging System - 2.0L EcoBoost (177kW/240PS) – MI4 (414-00 Charging System - General Information, Diagnosis and Testing).

GO to N3

N3 RECHECK FOR SCCM (STEERING COLUMN CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) U3003:A3

Using a diagnostic scan tool, clear the SCCM Diagnostic Trouble Codes (DTCs).

Using a diagnostic scan tool, carry out the SCCM self-test.

Is DTC U3003:A3 still present?

Yes

GO to N4

No	The system is operating normally at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.

N4 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the SCCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCCM connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST O: THE HEATED STEERING WHEEL IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY

Refer to Wiring Diagrams Cell 128 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCCM B135C:11	Heater Element: Circuit Short To Ground	This DTC sets when the heated steering wheel is commanded on and the SCCM senses current greater than 10 amps on the steering wheel heating element output circuit for greater than 150 ms, indicating a short to ground. This DTC also sets when the steering wheel heating element output Field Effect Transistor (FET) in the SCCM has a thermal failure. When this fault sets, the steering wheel heating element output is disabled until the ignition is cycled.
SCCM B135C:13	Heater Element: Circuit Open	This DTC sets when the heated steering wheel is commanded on and the SCCM senses current less than 1 amp on the steering wheel heating element output circuit for more than 1 second. This indicates an open circuit. When this fault sets, the steering wheel heating element output is disabled until the heated steering wheel is commanded ON while the engine is running. If the condition that caused the fault to set is still present, the SCCM will switch the steering wheel heating element output off within 1 second.
SCCM U210A:11	Temperature Sensor: Circuit Short To Ground	This DTC only sets when the heated steering wheel is commanded on and the SCCM detects less than 0.794 volts on the temperature sensor input circuit for greater than 1 second, indicating a short to ground. When this fault occurs, the steering wheel heating element output is disabled until the ignition is cycled.
SCCM U210A:13	Temperature Sensor: Circuit Open	This DTC sets when the heated steering wheel is commanded on and the SCCM detects voltage greater than or equal to 4.986 volts on the temperature sensor reference circuit for more than 1 second. indicating an open circuit or an open temperature sensor. However, extreme cold temperatures below - 58 °F (- 50 °C) can also cause this DTC to set. When this fault occurs, the steering wheel heating element output is disabled until the ignition is cycled.

Possible Sources

HVAC module
Wiring, terminals or connectors
SCCM
Clockspring
Heated steering wheel

Visual Inspection and Pre-checks

BJB fuse F160 (15A) and BCM fuse 22 (7.5A).
Check battery condition and state of charge.

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

O1 CHECK FOR COMMUNICATION TO THE SCCM

Ignition ON.

Using a diagnostic scan tool, carry out the network test.

Does the SCCM pass the network test?

Yes

GO to O2

No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

O2 CHECK FOR SYSTEM VOLTAGE DTCS

Ignition ON.

Using a diagnostic scan tool, carry out the PCM self-test.

Are any charging system DTCs present?

Yes

ADDRESS the root cause of any low or high system voltage conditions prior to diagnosing any heated steering wheel concerns.
REFER to: Charging System - 1.5L EcoBoost (132kW/180PS) – I3 (Y1) (414-00 Charging System - General Information, Diagnosis and Testing).
REFER to: Charging System - 2.0L EcoBoost (177kW/240PS) – MI4 (414-00 Charging System - General Information, Diagnosis and Testing).

GO to O3

O3 CHECK THE SCCM VOLTAGE FEED CIRCUITS

Disconnect: SCCM C226A.

Disconnect: SCCM C226B.

Ignition ON.

Measure:

Positive Lead Measurement / Action Negative Lead

C226A-2 Ground

C226B-2 Ground

Is the voltage above 11 volts?

Yes

GO to O4

No	VERIFY BCMC fuse F160 (15A) and BCM fuse 22 (7.5A) are ok. If not OK, REFER to the Wiring Diagrams manual to identify the possible cause of the circuit short. If OK, REPAIR the circuit.

O4 CHECK THE SCCM GROUND CIRCUIT

Ignition OFF.

Measure:

Positive Lead Measurement / Action Negative Lead

C226A-8 Ground

C226B-1 Ground

Is the resistance less than 3 ohms?

Yes

GO to O5

No	REPAIR the circuit.

O5 CHECK THE RESISTANCE OF THE HEATED STEERING WHEEL HEATER ELEMENT

Remove the driver airbag.
REFER to: Driver Airbag (501-20B Supplemental Restraint System, Removal and Installation).

Disconnect: Clockspring C218D.

On the steering wheel side, measure and record:

Positive Lead Measurement / Action Negative Lead

C218D-1 C218D-3

Is the resistance between 1.6 and 3.1 ohms?

Yes

GO to O6

No	INSTALL a new heated steering wheel. REFER to: Steering Wheel (211-04 Steering Column, Removal and Installation).

O6 CHECK THE HEATER ELEMENT TEMPERATURE SENSOR AND CIRCUIT RESISTANCE

Measure and record:

Positive Lead Measurement / Action Negative Lead

C218D-2 C218D-4

Compare the recorded measurement value with the table shown.

Ambient Temperature	Resistance
0-10°C (32-50°F)	18,298-26,817 ohms
10-20°C (50-68°F)	12,250-17,699 ohms
20-25°C (68-77°F)	10,100-11,948 ohms
25-30°C (77-86°F)	8,411-9,900 ohms
30-35°C (86-95°F)	7,035-8,205 ohms
35-40°C (95-104°F)	5,912-6,837 ohms
40-50°C (104-122°F)	4,232-5,725 ohms

Is the resistance within the specified value for the current temperature of the steering wheel?

Yes

GO to O7

No	INSTALL a new heated steering wheel. REFER to: Steering Wheel (211-04 Steering Column, Removal and Installation).

O7 CHECK THE HEATER ELEMENT TEMPERATURE SENSOR FOR A SHORT TO GROUND

Measure and record:

Positive Lead Measurement / Action Negative Lead

C218D-2 Ground

C218D-4 Ground

Is the resistance less than 3 ohms?

Yes

REPAIR the circuit.

GO to O8

O8 CHECK THE SCCM HEATED STEERING WHEEL SUPPLIED VOLTAGE CIRCUIT

Disconnect: SCCM C226B.

Ignition ON.

Measure:

Positive Lead Measurement / Action Negative Lead

C226B-2 Ground

Is the voltage greater than 11 volts?

Yes

GO to O9

No	VERIFY BCMC fuse F160 (15A) AND BCM fuse 22 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible cause of the circuit short.

O9 CHECK THE SCCM HEATED STEERING WHEEL GROUND CIRCUIT

Ignition OFF.

Measure:

Positive Lead Measurement / Action Negative Lead

C226B-1 Ground

Is the resistance less than 3 ohms?

Yes

INSTALL a new clockspring.
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
If concern is still present, GO to O10

No	REPAIR the circuit.

O10 CHECK FOR CORRECT SCCM OPERATION

Disconnect and inspect all SCCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCCM connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCCM
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST P: DTCS B112B:04, B112B:44, B112B:45, B112B:46, B112B:49 OR U2200:00

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCCM B112B:04	Steering Wheel Module: System Internal Failures	This DTC sets when there is an Internal Fault in the SCCM .
SCCM B112B:44	Steering Wheel Module: Data Memory Failure	This DTC sets when there is an fault in the Data Memory section of the SCCM .
SCCM B112B:45	Steering Wheel Module: Program Memory Failure	This DTC sets when there is an fault in the Program Memory section of the SCCM .
SCCM B112B:46	Steering Wheel Module: Calibration/Parameter Memory Failure	This DTC sets when there is a Calibration or Parameter Memory failure in the SCCM .
SCCM B112B:49	Steering Wheel Module: Internal Electronic Failure	This DTC sets when there is an Internal Electronic Failure in the SCCM .
SCCM U2200:00	Control Module Configuration Memory Corrupt: No Sub Type Information	This DTC sets when there is an fault in the Data Memory section of the SCCM .

Possible Sources

SCCM

P1 CHECK FOR DTCS B112B:04, B112B:44, B112B:45, B112B:46, B112B:49 OR U2200:00

Ignition ON.

Using a diagnostic scan tool, carry out the SCCM self test.

Are DTCs B112B:04, B112B:44, B112B:45, B112B:46, B112B:49 or U2200:00 present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM , or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST Q: NETWORK COMMUNICATION CONCERNS U0140:00, U0146:00, U0155:00, U023A:00 OR U0241:00

Normal Operation and Fault Conditions

REFER to: Steering Wheel and Column Electrical Components - System Operation and Component Description (211-05 Steering Wheel and Column Electrical Components, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SCCM U0140:00	Lost Communication With Body Control Module: No Sub Type Information	NOTE: This DTC sets in a module that is reporting a missing or invalid message from another module on the data bus. The module that reports the fault is not the problem module. Do not install a new SCCM as part of the repair unless directed to do so in a pinpoint test. This DTC sets when the SCCM detects a missing or invalid message from the BCM
SCCM U0146:00	Lost Communication With Serial Data Gateway 'A': No Sub Type Information	NOTE: This DTC sets in a module that is reporting a missing or invalid message from another module on the data bus. The module that reports the fault is not the problem module. Do not install a new SCCM as part of the repair unless directed to do so in a pinpoint test. This DTC sets when the SCCM detects a missing or invalid message from the GWM
SCCM U0155:00	Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information	NOTE: This DTC sets in a module that is reporting a missing or invalid message from another module on the data bus. The module that reports the fault is not the problem module. Do not install a new SCCM as part of the repair unless directed to do so in a pinpoint test. This DTC sets when the SCCM detects a missing or invalid message from the IPC
SCCM U023A:00	Lost Communication With Image Processing Module A: No Sub Type Information	NOTE: This DTC sets in a module that is reporting a missing or invalid message from another module on the data bus. The module that reports the fault is not the problem module. Do not install a new SCCM as part of the repair unless directed to do so in a pinpoint test. This DTC sets when the SCCM detects a missing or invalid message from the IPMA

Possible Sources

Network communication concern
SCCM concern
BCM
GWM
IPC
IPMA
HCM

Q1 U0140:00, U0146:00, U0155:00, OR U023A:00

Ignition OFF.

Using a diagnostic scan tool, carry out the Network Test.

Does the BCM , GWM , IPMA , , IPC or the SCCM pass the Network Test?

Yes

GO to Q2

No	DIAGNOSE the BCM , GWM , IPC , IPMA or SCCM does not respond to the diagnostic scan tool. REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

Q2 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, carry out the SCCM self-test.

Clear the Diagnostic Trouble Codes (DTCs).

Ignition OFF.

Ignition ON.

Using a diagnostic scan tool, carry out the SCCM self-test.

Record the SCCM Diagnostic Trouble Codes (DTCs).

Are DTC U0140:00, U0146:00, U0155:00, U023A:00 or U0241:00 retrieved again?

Yes

GO to Q3

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

Q3 REVIEW THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE SCCM (STEERING COLUMN CONTROL MODULE) SELF-TEST

Check the recorded Diagnostic Trouble Codes (DTCs) from the SCCM self-test.

Are any non network DTCs present in the SCCM ?

Yes

DIAGNOSE all non network Diagnostic Trouble Codes (DTCs) first. REFER to the appropriate DTC chart in this section.

GO to Q4

Q4 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) IN THE GWM (GATEWAY MODULE A)

Using a diagnostic scan tool, carry out the GWM self-test.

Are any Diagnostic Trouble Codes (DTCs) present in the GWM ?

Yes

DIAGNOSE the GWM Diagnostic Trouble Codes (DTCs).
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

No	For U0140:00 GO to Q5 For U0146:00 GO to Q6 For U0155:00 GO to Q7 For U0234:00 GO to Q8

Q5 U0140:00 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) IN THE BCM (BODY CONTROL MODULE)

Using a diagnostic scan tool, carry out the BCM self-test.

Are any Diagnostic Trouble Codes (DTCs) present in the BCM ?

Yes

DIAGNOSE the BCM Diagnostic Trouble Codes (DTCs).
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

GO to Q9

Q6 U0146:00 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) IN THE GWM (GATEWAY MODULE A)

Using a diagnostic scan tool, carry out the GWM self-test.

Are any Diagnostic Trouble Codes (DTCs) present in the GWM ?

Yes

DIAGNOSE the GWM Diagnostic Trouble Codes (DTCs).
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

GO to Q9

Q7 U0155:00 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) IN THE IPC (INSTRUMENT PANEL CLUSTER)

Using a diagnostic scan tool, carry out the IPC self-test.

Are any Diagnostic Trouble Codes (DTCs) present in the IPC ?

Yes

DIAGNOSE the IPC Diagnostic Trouble Codes (DTCs).
REFER to: Instrumentation, Message Center and Warning Chimes (413-01 Instrumentation, Message Center and Warning Chimes, Diagnosis and Testing).

GO to Q9

Q8 U023A:00 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) IN THE IPMA (IMAGE PROCESSING MODULE A)

Using a diagnostic scan tool, carry out the IPMA self-test.

Are any Diagnostic Trouble Codes (DTCs) present in the IPMA ?

Yes

DIAGNOSE the IPMA Diagnostic Trouble Codes (DTCs).
REFER to: Lane Keeping System (419-07 Lane Keeping System, Diagnosis and Testing).

GO to Q9

Q9 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI or the PMI may not have been carried out.

Check the vehicle service history for recent service actions related to the BCM , GWM , IPC , IPMA or SCCM . If recent service history is found:
- verify the correct replacement module was installed.
  - HVBOM may be used to verify correct part fitment.
- verify the configuration of replacement module was correct.
  - re-configure the module using as-built data if prior configuration is suspect.
- verify the module was not obtained from a like vehicle and installed into customer vehicle.
  - return the swapped module to source vehicle and obtain new replacement module.

Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?

Yes

GO to Q10

No	The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

Q10 CHECK FOR CORRECT SUSPECT MODULE OPERATION

Ignition OFF.

Disconnect and inspect all suspect module connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the Suspect Module connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new Suspect Module.
For U0140:00 INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation). For U0146:00 INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation). For U0155:00 INSTALL a new IPC .
REFER to: Instrument Panel Cluster (IPC) (413-01 Instrumentation, Message Center and Warning Chimes, Removal and Installation). For U023A:00 INSTALL a new IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

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