Test L: The Anti-Lock Brake System (ABS) Warning Indicator Is Never/Always On

PINPOINT TEST L: THE ANTI-LOCK BRAKE SYSTEM (ABS) WARNING INDICATOR IS NEVER/ALWAYS ON

Normal Operation
The anti-lock brake system (ABS) module provides the ABS status to the instrument cluster over the high speed controller area network (HS-CAN) communication bus. If a fault condition exists in the ABS, the ABS module sends the instrument cluster a command to either flash the ABS warning indicator or to turn it on. If the instrument cluster does not receive the ABS status message from the ABS module or the message is deemed invalid by the instrument cluster for greater than 5 seconds, the instrument cluster sets DTC U0121 (except Hybrid) or U0129 (Hybrid only) and defaults the ABS warning indicator on.

This pinpoint test is intended to diagnose the following:
- ABS module
- Instrument cluster

L1-L3:

L4-L5: