Pinpoint Test Cl: Abs Module Communication Concern With APIM
Normal Operation and Fault Conditions
With the ignition ON, the APIM sends messages to the GWM over the HS-CAN3. The GWM relays these 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 APIM 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 APIM, refer to Network Message Chart , Description and Operation in the Service Articles.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| ABS U0253:00 | Lost Communication With Accessory Protocol Interface Module: No Sub Type Information | This DTC sets when the ABS module does not receive any messages from the APIM within the allowed time. |
| ABS U0554:86 | Invalid Data Received From Accessory Protocol Interface Module: Signal Invalid | This DTC sets when the ABS module receives messages from the APIM, but the messages contain invalid data. |
Possible Sources
- Network communication concern
- GWM
- APIM