Pinpoint Test Cl: Abs (Anti-Lock Brake System) Module Communication Concern With APIM (Sync Module)
Refer to MODULE COMMUNICATIONS NETWORK for schematic and connector information.
Normal Operation and Fault Conditions
With the ignition ON, the APIM sends messages to the ABS module over the HS-CAN2. If the ABS module does not receive these messages within the specified time frame, the ABS module sets Diagnostic Trouble Codes (DTCs). This can be due to a APIM failure, a circuit failure on the CAN or an excessive load on the network. For information on the messages sent to the ABS module by the APIM, REFER to: Anti-Lock Brake System (ABS) and Stability Control - System Operation and Component Description .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| ABS U0253:00 | Lost Communication With Accessory Protocol Interface Module: No Sub Type Information | Sets if the APIM messages are missing. |
| ABS U0554:86 | Invalid Data Received From Accessory Protocol Interface Module: Signal Invalid | sets if the auto hold switch status message from the APIM is received with an invalid value. |
Possible Sources
- Network communication concern
- APIM