Pinpoint Test Cl: Abs Module Communication Concern With APIM
WARNING: This page is about a different car, the 2023 Ford Bronco. However, it is still accessible from the selected car via links, so may be relevant.
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