Description
The optical sensor measures ambient light and transmits the optical sensor signal to the bcm.
Component function check
1.Check optical sensor signal by consult
Consult

*: Illuminates the optical sensor. The value may be less than the standard value if brightness is weak.
Is the inspection result normal? YES >> Optical sensor is normal.
NO >> Refer to EXL-103, "Diagnosis Procedure".
Diagnosis procedure
Regarding Wiring Diagram information, refer to EXL-53, "Wiring Diagram".
1.Check optical sensor power supply input

Is the inspection result normal? Yes >> go to 2.
No >> go to 3.
2.Check optical sensor ground circuit

Is the inspection result normal? YES >> GO TO 4.
NO >> GO TO 5.
3.Check optical sensor power supply for open circuit


Is the inspection result normal? Yes >> replace bcm. Refer to bcs-73, "removal and installation".
No >> repair or replace the harness or connectors.
4.Check optical sensor signal open circuit


Is the inspection result normal? Yes >> replace the optical sensor. Refer to exl-130, "removal and installation".
No >> repair or replace harness or connectors.
5.Check optical sensor ground for open circuit

Is the inspection result normal? YES >> Replace BCM. Refer to BCS-73, "Removal and Installation".
NO >> Repair or replace harness or connector.
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Hazard switchRear seat
Exploded View
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Seatback latch release knob
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Seatback silencer (RH)
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Seatback latch release knob finisher
Rear seat bolster trim (RH)
Rear seat bolster pad (RH)
Rear seat bolster (RH)
...
Both doors mirror defogger don’t operate but rear window defogger operates
Diagnosis procedure
Regarding Wiring Diagram information, refer to DEF-20, "Wiring Diagram".
1. Check door mirror defogger fuse
Check if the following fuse in fuse block (J/B) is blown.
Is the inspection result normal?
Yes >> go to 2.
No >> replace the blown fuse af ...
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DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0037
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low bank 1 sensor 2)
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