Pinpoint Test O : DTC (Diagnostic Trouble Code) U0121:87: Notes
Refer to MODULE COMMUNICATIONS NETWORK for schematic and connector information.
Normal Operation and Fault Conditions
The IPMB communicates with the ABS module on the HS-CAN2.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0121:87 | Lost Communication With Anti-Lock Brake System (ABS) Control Module: Missing Message | Sets in continuous memory in the IPMB if expected messages from the ABS module are not received for 5 seconds or more when the ignition is on. |
Possible Causes
- Communication network concern
- ABS Module
- IPMB