Other information:
System Operation
Principles of Operation
Power Transfer Unit (PTU) Operation
The PTU has four (4) modes of operation: Connected, Connecting,
Disconnected, and Disconnecting. Each mode is commanded by the AWD
module. The power transfer unit contains a reversible DC
motor and two hall effect position sensors...
System Operation
Cold Start Emission Reduction Monitor
The
cold start emission reduction monitor is an on board strategy designed
for vehicles that meet the low emissions vehicle-II (LEV-II) emissions
standards. The monitor works by detecting the lack of catalyst warm up
resulting from a failure to apply sufficient cold start emission
reduction during a cold start...