Pinpoint Test E : DTC U0121: Notes
Refer to Wiring Diagram Module Communications Network for schematic and connector information.
Normal Operation and Fault Conditions
GSM: DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0121 | Lost Communication With Anti-Lock Brake System Control Module | Sets in continuous memory in the GSM if data messages received from the ABS are missing for 5 seconds or longer. |
Possible Sources
- Communication concern
- ABS
- GSM