Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Pinpoint Test AU: Abs Module Communication Concern With AWD Module
Normal Operation and Fault ConditionsÂ
The AWD module is also referred to as the TCCM.
With the ignition ON, the AWD module sends messages to the ABS module over the FD-CAN. If the ABS module does not receive these messages within the allotted time frame or if the messages contain invalid data, the module sets a DTC. This can be due to a AWD module 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 AWD module, refer to the Network Message Chart .
DTC Fault Trigger ConditionsÂ
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| ABS U0102:00 | Lost Communication with Transfer Case Control Module: No Sub Type Information | Sets if the AWD module messages are missing. |
| ABS U0403:00 | Invalid Data Received From Transfer Case Control Module: No Sub Type Information | Sets if the information in one or more messages from the AWD module contains invalid or out of range information. |
Possible SourcesÂ
- Network communication concern
- AWD module
PINPOINT TESTS AU: ABS MODULE COMMUNICATION CONCERN WITH THE TCCM
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.