FixVault

Pinpoint Test Av: Abs Module Communication Concern With The GSM

Normal Operation and Fault Conditions 

With the ignition ON, the GSM sends messages to the ABS module over the HS-CAN2 through the GWM. 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 GSM 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 GSM, refer to Network Message Chart  in the service information.

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Condition
ABS U0103:00 Lost Communication With Gear Shift Control Module A: No Sub Type Information This DTC sets when the ABS module does not receive any messages from the GSM within the allowed time.
ABS U0404:00 Invalid Data Received from Gear Shift Control Module A: No Sub Type Information This DTC sets when the ABS module receives messages from the GSM, but the messages contain invalid data.

Possible Sources 

Pinpoint Tests AV: ABS Module Communication Concern With The GSM