Pinpoint Test M : U0121:87: Notes
Refer to Module Communications Network System 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 |
NOTE:
DTC U0121:87 also sets in the PAM if the traction control is switched off by the user. 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