Circuit Description
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.
Test Description
The number below refers to the step number on the diagnostic table.
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This step tests if the instrument panel cluster (IPC) is able to turn ON the Traction Off indicator.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Antilock Brake System Schematics Connector End View Reference: Antilock Brake System Connector End Views or Displays and Gages Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
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 illuminate? | 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 an open in the TCS switch signal circuit. Refer to Circuit Testing . Did you find and correct the condition? | Go to Step 9 | Go to Step 6 |
Does the Traction Off indicator turn ON? | Go to Step 8 | Go to Step 7 | |
7 | Replace the IPC. Refer to Control Module References 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 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 |
