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

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

M1-M4:

Normal Operation
The status of the ABS system is sent to the instrument cluster from the ABS module over the high speed controller area network (HS-CAN). The instrument cluster monitors the ABS input and illuminates the ABS warning indicator when a concern is present.

NOTE: When the ABS module detects an electronic brake distribution (EBD) fault, the ABS module sends a message to the instrument cluster. Whenever the instrument cluster receives an EBD message from the ABS module, the instrument cluster turns on both the brake warning indicator and the ABS warning indicator simultaneously.

Possible Causes
- ABS module
- Instrument cluster