Pinpoint Test Ai: Abs Module Communication Concern With Pcm
Normal Operation and Fault Conditions
With the ignition ON, the PCM sends 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 PCM 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 PCM, REFER to: Anti-Lock Brake System (ABS) and Stability Control - System Operation and Component Description .
The TCM is an internal component of the PCM.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| ABS U0100:00 | Lost Communication With ECM/PCM 'A': No Sub Type Information | This DTC sets when the ABS module does not receive any messages from the PCM within the allowed time. |
| ABS U0401:00 | Invalid Data Received from ECM/PCM A: No Sub Type Information | This DTC sets when the ABS module receives invalid data in any of the following messages: powertrain message counter, powertrain message checksum, gear lever position or REVERSE gear status. |
| ABS U0401:64 | Invalid Data Received from ECM/PCM A: Signal Plausibility Failure | This DTC sets when the ABS module receives invalid data in the driven wheel torque messages. |
| ABS U0401:86 | Invalid Data Received from ECM/PCM A: Signal Invalid | This DTC sets when the ABS module receives invalid data in the accelerator pedal message, driven wheel torque message, transmission requested gear message or PARK status message. |
| ABS U0402:86 | Invalid Data Received from TCM: Signal Invalid | This DTC sets when the ABS module receives invalid data in the neutral tow command or the selectable drive mode switch type message. |
Possible Sources
- Network communication concern
- PCM
Pinpoint Tests AI: ABS Module Communication Concern With PCM