Circuit Description
The electronic brake control module (EBCM) turns ON the Low Trac indicator by grounding the EBCM Low Trac indicator control circuit. When the EBCM detects that the traction control system is activated, the Low Trac indicator will illuminate.
Diagnostic Aids
Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction.
The following are possible causes of the malfunction:
| • | A short to ground in the Low Trac indicator control circuit |
| • | An internal EBCM malfunction |
| • | An internal instrument panel cluster (IPC) malfunction |
If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections .
Test Description
The number below refers to 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 | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 |
Is the Low Trac indicator ON? | Go to Step 3 | Go to Step 4 |
Test the EBCM Low Trac indicator lamp circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 6 | Go to Step 5 | |
4 | Replace the EBCM. Refer to Electronic Brake Control Module Replacement . Did you complete the replacement? | Go to Step 6 | -- |
5 | Replace the instrument panel cluster (IPC). Refer to Instrument Cluster Replacement . Did you complete the replacement? | Go to Step 6 | -- |
6 |
Does the DTC reset? | Go to Step 2 | System OK |
