Test Description
The numbers below refer to the step numbers on the diagnostic table.
- 4: Test the stop lamp circuit of the EBCM for a high resistance, an open, or a short to ground.
- 5: Test the stop lamp circuit of the EBCM for a short to voltage.
DTC C1246
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: ABS Schematics Connector End View Reference: ABS Connector End Views |
||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 |
|
8-14 V | Go to Step 3 | Go to Step 4 |
| 3 | Measure the voltage between the stop lamp circuit of the EBCM and a good ground with the brake pedal released. Is the voltage as specified? |
Below 1 V | Go to Step 6 | Go to Step 5 |
| 4 | Test the stop lamp circuit of the EBCM for a high resistance, an open, or a short to ground. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 7 | Go to Symptoms - Lighting Systems in Lighting Systems |
| 5 | Test the stop lamp circuit of the EBCM for a short to voltage. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 7 | Go to Symptoms - Lighting Systems in Lighting Systems |
| 6 | Replace the brake pressure modulator valve (BPMV). Refer to Brake Modulator Assembly Replacement (Without VSC) or Brake Modulator Assembly Replacement (With VSC) . Did you complete the replacement? |
- | Go to Step 7 | - |
| 7 |
|
- | Go to Step 2 | System OK |