Transfer Case

U0141 LOST COMMUNICATION WITH FCM (TIPM)

For a complete wiring diagram Consult Diagrams/Electrical.

Theory of Operation

The TIPM communicates with other controllers over the CAN C bus. The FDCM Module continuously monitors the bus activity and receives the messages it needs. If the FDCM does not receive messages from the TIPM Module , then this fault will set and the service 4WD is illuminated.

- When Monitored:

Every 7 msec. Conditions: Battery voltage greater than 10v but less than 16v.

- Set Condition:

CAN C bus messages not received for 10 seconds.

Possible Causes:

ACTIVE DTC

1. Ignition on, engine off.
2. With a scan tool, read FDCM DTCs.

Is the DTC active at this time?

Yes

- Perform the appropriate diagnostic procedure. Refer to Totally Integrated Power Module (TIPM)

No

- The condition that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors, pay particulate attention to the CAN circuits.
- Perform the TRANSFER CASE VERIFICATION TEST. Refer to