Pinpoint Test G : DTC (Diagnostic Trouble Code) U0121:00 Or DTC (Diagnostic Trouble Code) U0121:82: Notes
DTC U0121:00 or DTC U0121:82
Refer to Wiring Diagrams MODULE COMMUNICATIONS NETWORK for schematic and connector information.
Normal Operation and Fault Conditions
The IPMA communicates with the ABS module through the HS-CAN. REFER to: Lane Keeping System - System Operation and Component Description
Possible Causes
- Communication network concern
- ABS module
- IPMA
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0121:00 | Lost Communication With Anti-Lock Brake System (ABS) Control Module: No Sub Type Information | Sets in continuous memory and on-demand in the IPMA if expected messages from the ABS module are not received. |
| U0121:82 | Lost Communication With Anti-Lock Brake System (ABS) Control Module: Alive/Sequence Counter Incorrect/Not Updated | Sets in continuous memory and on-demand in the IPMA if expected messages from the ABS module are not received. |