Diagnosis Procedure
- CHECK OPTICAL SENSOR POWER SUPPLY INPUT
- Turn the ignition switch ON.
- Turn the lighting switch AUTO.
- Check the voltage between the optical sensor harness connector and the ground.
Terminals Voltage (Approx.) (+) (-) Optical sensor Ground Connector Terminal M17 1 5 V Is the measurement value normal?
YES: GO TO 2.
NO: GO TO 4.
- CHECK OPTICAL SENSOR GROUND INPUT
Check the voltage between the optical sensor harness connector and the ground.
Terminals Voltage (Approx.) (+) (-) Optical sensor Ground Connector Terminal M17 3 0 V Is the measurement value normal?
YES: GO TO 3.
NO: GO TO 6.
- CHECK OPTICAL SENSOR SIGNAL OUTPUT
With illuminating the optical sensor, check the voltage between the optical sensor harness connector and the ground.
Terminals Condition Voltage (Approx.) (+) (-) Optical sensor Ground Optical sensor Connector Terminal M17 2 When bright outside of the vehicle Close to 5 V When dark outside of the vehicle Close to 0 V *: Illuminate the optical sensor. The value may be less than the standard if brightness is weak. Is the measurement value normal?
YES: GO TO 7.
NO: Replace the optical sensor.
- CHECK OPTICAL SENSOR OPEN CIRCUIT
- Turn the ignition switch OFF.
- Disconnect the optical sensor connector and the BCM connector.
- Check continuity between the optical sensor harness connector and the BCM harness connector.
Optical sensor BCM Continuity Connector Terminal Connector Terminal M17 1 M65 17 Existed Does continuity exist?
YES: GO TO 5.
NO: Repair the harnesses or connectors.
- CHECK OPTICAL SENSOR SHORT CIRCUIT
Check the continuity between the optical sensor harness connector and the ground.
Optical sensor Ground Continuity Connector Terminal M17 1 Not existed Does continuity exist?
YES: Repair the harnesses or connectors.
NO: Replace BCM.
- CHECK OPTICAL SENSOR GROUND OPEN CIRCUIT
- Turn the ignition switch OFF.
- Disconnect the optical sensor connector and BCM connector.
- Check continuity between the optical sensor harness connector and the BCM harness connector.
Optical sensor BCM Continuity Connector Terminal Connector Terminal M17 3 M65 18 Existed Does continuity exist?
YES: Replace BCM.
NO: Repair the harnesses or connectors.
- CHECK OPTICAL SENSOR SIGNAL OPEN CIRCUIT
- Turn the ignition switch OFF.
- Disconnect the optical sensor connector and the BCM connector.
- Check continuity between the optical sensor harness connector and the BCM harness connector.
Optical sensor BCM Continuity Connector Terminal Connector Terminal M17 2 M65 14 Existed Does continuity exist?
YES: GO TO 8.
NO: Repair the harnesses or connectors.
- CHECK OPTICAL SENSOR SHORT CIRCUIT
Check the continuity between the optical sensor harness connector and the ground.
Optical sensor Ground Continuity Connector Terminal M17 2 Not existed Does continuity exist?
YES: Repair the harnesses or connectors.
NO: Replace BCM.