BRAKELIGHT Failure Sensor Test
- Ensure brakelights illuminate when brake pedal is depressed. If one bulb does not illuminate, check bulb condition. Repair as necessary and recheck. If all brakelights illuminate, go to next step. If no brakelights illuminate, check brakelight system. See EXTERIOR LIGHTS article.
- Open trunk. Remove left inside trunk panel to gain access to brakelight failure sensor. Turn ignition switch to OFF position. Disconnect left and right brakelight failure sensor 6-pin connectors. Start engine and let idle. BRAKE LAMP indicator should not illuminate. If BRAKE LAMP indicator illuminates and does not go out, check for a short to ground in White/Green wire between safety indicator and brakelight failure sensor. If White/Green wire is okay, replace printed circuit board in gauge assembly. On 3.2TL, if BRAKE LAMP indicator illuminates and goes out, go to next step. On 3.5RL, if BRAKE LAMP indicator illuminates and goes out, go to step 4.
- Connect failure sensor 6-pin connector. Using a fused jumper wire, connect failure sensor 6-pin connector terminal No. 5 (Black wire) to ground. Turn ignition switch to ON position. Depress brake pedal. If BRAKE LAMP indicator illuminates, replace failure sensor. If BRAKE LAMP indicator illuminates and then goes out, check for open or poor ground in Black wire between failure sensor and ground. See WIRING DIAGRAMS .
- Turn ignition switch to OFF position. Connect a fused jumper wire between left or right brakelight failure sensor connector terminal No. 2 (Green/Orange wire or Green/Yellow wire) and ground. Turn ignition switch to ON position and depress brake pedal. BRAKE LAMP indicator should not illuminate. If BRAKE LAMP indicator illuminates and does not go out, replace appropriate failure sensor. If BRAKE LAMP indicator illuminates and goes out, check for an open in Black wire between safety indicator and ground connection.