OPTICAL SENSOR
Description
The optical sensor converts the outside brightness (lux) to voltage and transmits the optical sensor signal to the BCM.
OPTICAL SENSOR
Diagnosis Procedure
1.CHECK OPTICAL SENSOR POWER SUPPLY INPUT
- Turn the ignition switch ON.
- Turn the lighting switch to AUTO.
- Check the voltage between the optical sensor harness connector and ground.
Is the voltage reading as specified?
YES >> GO TO 2
NO >> GO TO 4
2.CHECK OPTICAL SENSOR GROUND INPUT
Check the voltage between the optical sensor harness connector and ground.
Is the voltage reading as specified?
YES >> GO TO 3
NO >> GO TO 6
3.CHECK OPTICAL SENSOR SIGNAL OUTPUT
With the optical sensor illuminating, check voltage between the optical sensor harness connector and ground.
Is the voltage reading as specified?
YES >> GO TO 7
NO >> Replace the optical sensor.
4.CHECK OPTICAL SENSOR POWER SUPPLY FOR 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.
Does continuity exist?
YES >> GO TO 5
NO >> Repair the harnesses or connectors.
5.CHECK OPTICAL SENSOR POWER SUPPLY FOR SHORT CIRCUIT
Check the continuity between the optical sensor harness connector and the ground.
Does continuity exist?
YES >> Repair the harnesses or connectors.
NO >> Replace BCM. Refer to See: Body and Frame\Body Control Systems\Body Control Module\Service and Repair .
6.CHECK OPTICAL SENSOR GROUND FOR 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.
Does continuity exist?
YES >> Replace BCM. Refer to See: Body and Frame\Body Control Systems\Body Control Module\Service and Repair .
NO >> Repair the harnesses or connectors.
7.CHECK OPTICAL SENSOR SIGNAL FOR 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.
Does continuity exist?
YES >> GO TO 8
NO >> Repair the harnesses or connectors.
8.CHECK OPTICAL SENSOR SIGNAL FOR SHORT CIRCUIT
Check the continuity between the optical sensor harness connector and ground.
Does continuity exist?
YES >> Repair the harnesses or connectors.
NO >> Replace BCM. Refer to See: Body and Frame\Body Control Systems\Body Control Module\Service and Repair .
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