Test Description
The number below refers to the step number on the diagnostic table.
- 2: This step inspects the stop lamp switch operation.
DTC C1249
| Step | Action | Values | 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 | Press and release the brake pedal while observing the stop lamps. Do the stop lamps come ON and go OFF? |
- | Go to Step 3 | Go to Symptoms - Lighting Systems in Lighting Systems |
| 3 |
|
8-14 V | Go to Step 4 | Go to Step 6 |
| 4 | 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 5 | Go to Step 7 |
| 5 | Test the EBCM ground circuits for an open or high resistance. Did you find and correct the condition? |
- | Go to Step 9 | Go to Step 8 |
| 6 | Locate and repair the high resistance, open, or short to ground in the stop lamp circuit of the EBCM. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 9 | - |
| 7 | Locate and repair the short to voltage in the stop lamp circuit of the EBCM. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 9 | - |
| 8 | 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 9 | - |
| 9 |
|
- | Go to Step 2 | System OK |