Transfer Case

U0121-LOST COMMUNICATION WITH ABS

For a complete wiring diagram Consult Diagrams/Electrical.

Theory of Operation

The ABS 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 ABS 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.

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