Circuit Description
The ignition 3 voltage circuit supplies 12 volts to the traction control switch. The electronic brake control module (EBCM) illuminates the low traction indicator by applying ground to the traction control active signal circuit.
Diagnostic Aids
Thoroughly inspect connections or circuitry that may cause an intermittent malfunction. Refer to the following:
Test Description
The number below refers to the step number on the diagnostic table.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Antilock Brake System Schematics | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 |
Does the low traction indicator illuminate for 3 seconds and then turn OFF? | Go to Diagnostic Aids | Go to Step 3 |
3 | Use the scan tool to observe the Low Traction Lamp Command. Does the scan tool display On? | Go to Step 7 | Go to Step 4 |
Does the test lamp illuminate for 3 seconds and then turn OFF? | Go to Step 6 | Go to Step 5 | |
5 | Test the traction control active signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 8 | Go to Step 7 |
6 | Replace the traction control switch. Refer to Electronic Traction Control Switch Replacement . Did you complete the replacement? | Go to Step 8 | -- |
7 | 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 8 | -- |
8 |
Does the low traction indicator illuminate for 3 seconds and then turn OFF? | System OK | Go to Step 3 |
