Lamp Out Sensor: Testing and Inspection
Brake Light Failure Sensor Test1. First make sure the brake lights come on when the brake pedal is pressed.
- If all the brake lights come on, go to step 2.
- If one of the brake lights does not come on, check whether the bulb is blown. If the bulb is OK, go to step 2.
- If none of the brake lights come on, check the brake light circuit.
2. Open the tailgate, and remove the left rear side trim. The brake light failure sensor is mounted on the inside of the left rear side trim panel.
3. Make sure the BRAKE LAMP indicator does not come on and stay on when the brake light failure sensor connector is disconnected and the ignition switch is turned from OFF to ON (II). If the indicator comes on and then goes out, go to step 4. If the BRAKE LAMP indicator comes on and stays on, check for:
- A short to ground in the WHT/GRN wire between the safety indicator and the No.4 (or No.2*) terminal of the failure sensors.
- A faulty safety indicator circuit in the gauge assembly.
*: '04 model
4. Reconnect the 6P connector.
5. Make sure the BRAKE LAMP indicator comes on and goes off when the No.3 (or No.5*) terminal of the 6P connector is grounded, the brake pedal is pressed, and the ignition switch is turned from OFF to ON (II).
- If the BRAKE LAMP indicator comes on and stays on, check for a faulty sensor.
- If the BRAKE LAMP indicator goes off, check for:
- A poor ground (G 601).
- An open in the WHT/GRN or BLK wire.
*: '04 model