Pinpoint Test Bx: Abs (Anti-Lock Brake System) Module Communication Concern With The AWD (All-Wheel Drive) Module

REFER to: MODULE COMMUNICATIONS NETWORK for schematic and connector information.

Normal Operation and Fault Conditions 

With the ignition ON, the AWD module sends messages to the ABS module through the GWM over the CAN. If the ABS module does not receive these messages within the specified time frame, the ABS 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: Anti-Lock Brake System (ABS) and Stability Control - System Operation and Component Description  .

DTC Fault Trigger Conditions 

Possible Sources 

• Network communication concern
• AWD module
• GWM