Test P: The ABS Warning Indicator Is Never/Always On

PINPOINT TEST P: THE ABS WARNING INDICATOR IS NEVER/ALWAYS ON

Normal Operation
The 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 ABS status message is missing for less than 5 seconds, the ABS warning indicator remains in the last indication mode (on or off). If the ABS status message is missing for more than 5 seconds, the instrument cluster sets DTC U0121 and defaults the ABS warning indicator on. If the ABS data received is deemed invalid by the instrument cluster for 5 seconds or longer, the instrument cluster sets DTC U2023 and defaults the ABS warning indicator on.

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

P1:

P2-P5: