The Traction Off indicator is controlled by the instrument cluster via serial data messages from the body control module (BCM). When the traction control system (TCS) switch is pressed, the BCM commands the instrument cluster to turn ON the Traction Off indicator.
The Traction Off indicator will also turn ON during the instrument cluster bulb check. When the ignition switch is turned to ON, the Traction Off indicator will turn ON for approximately 3 seconds and then turn OFF.
The malfunction must be present during diagnosis in order to prevent unnecessary parts replacement. Always begin diagnosis with the Diagnostic System Check - Vehicle.
The number below refers to the step number on the diagnostic table.
Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Antilock Brake System Schematics Connector End View Reference: Antilock Brake System Connector End Views or Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gages, and Console | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 |
Does the Traction Off indicator illuminate for 2 seconds and then turn OFF? | Go to Diagnostic Aids | Go to Step 3 |
3 |
Does the Traction Off indicator turn OFF and ON? | Go to Step 4 | Go to Step 5 |
4 | Replace the TCS switch. Refer to Electronic Traction Control Switch Replacement . Did you complete the replacement? | Go to Step 9 | -- |
5 | Test for a short to ground in the TCS switch signal circuit. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 6 |
Does the Traction Off indicator turn OFF? | Go to Step 8 | Go to Step 7 | |
7 | Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 9 | -- |
8 | Replace the body control module (BCM). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 9 | -- |
9 |
Does the Traction Off indicator illuminate for 2 seconds and then turn OFF? | System OK | Go to Step 2 |