Pinpoint Test O : U0121:87: Notes
Refer to MODULE COMMUNICATIONS NETWORK for schematic and connector information.
Normal Operation and Fault Conditions
The PAM communicates with the ABS module through the HS-CAN.
DTC Fault Trigger Conditions
| 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 PAM when expected messages from the ABS module are not received for 0.5 second or more. |
Possible Sources
- Wiring, terminals or connectors
- PAM
- ABS module