Pinpoint Test E: U0121:87: Notes
U0121:87
Refer to Module Communications Network for schematic and connector information
Normal Operation and Fault Conditions
REFER to: Communications Network - System Operation and Component Description .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0121:87 | Lost Communication With Anti-Lock Brake System (ABS) Control Module: No Sub Type Information | A continuous memory DTC that sets in the BCM if ABS messages received from the ABS module are missing. |
Possible Sources
- Communication network concern
- Battery voltage concern
- ABS module
- BCM