Normal Operation and Fault Conditions
With the ignition ON, the TCCM sends messages to the ABS module over the HS-CAN 2. If the ABS module does not receive these messages within the specified time frame, the ABS module sets DTCs. This can be due to a TCCM failure, a circuit failure on the network or an excessive load on the network. For information on the messages sent to the ABS module by the TCCM, refer to the Network Message Chart in ANTI-LOCK BRAKE SYSTEM (ABS) AND STABILITY CONTROL - SYSTEM OPERATION AND COMPONENT DESCRIPTION .
PPT QA ABS MODULE DTC FAULT TRIGGER CONDITIONS
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0102:00 | Lost Communication With Transfer Case Control Module: No Sub Type Information | This DTC sets if the ABS module does not receive any messages from the TCCM. |
| U0403:00 | Invalid Data Received From Transfer Case Control Module: No Sub Type Information | This DTC sets if the A WD locking torque request message or the rear differential locking torque message from the TCCM contains 'fault' instead of the actual information. |