Circuit Description
The Low Traction indicator is controlled by the instrument cluster via serial data messages from the EBCM. When the ABS or TCS is active for 0.5 seconds, the EBCM commands the instrument cluster to turn ON the Low Traction indicator.
The Low Traction indicator will also turn ON during the instrument cluster bulb check. When the ignition switch is turned to ON, the Low Traction indicator will turn ON for approximately 3 seconds and then turn OFF.
Diagnostic Aids
The malfunction must be present during diagnosis in order to prevent unnecessary parts replacement. Always begin diagnosis with Diagnostic System Check - Vehicle.
Test Description
The number below refers to the step number on the diagnostic table.
-
This step tests if the instrument panel cluster (IPC) is able to turn ON the Low Traction indicator.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Antilock Brake System Schematics Connector End View Reference: Antilock Brake System Connector End Views and Displays and Gages Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 |
Does the Low Traction indicator illuminate for 2 seconds and then turn OFF? | Go to Diagnostic Aids | Go to Step 3 |
Does the Low Traction indicator turn ON? | Go to Step 5 | Go to Step 4 | |
4 | Replace the IPC. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 6 | -- |
5 | Replace the electronic brake control module (EBCM). Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 6 | -- |
6 |
Does the Low Traction indicator illuminate for 2 seconds and then turn OFF? | System OK | Go to Step 3 |
