Optical Sensor

OPTICAL SENSOR


Optical Sensor Diagnosis Procedure

Regarding Wiring Diagram information, Automatic Air Conditioner.

DIAGNOSTIC PROCEDURE FOR OPTICAL SENSOR





SYMPTOM: Optical sensor circuit is open or shorted. Using the
CONSULT-III, DTC B257F or B2580 is displayed. Without a CONSULT-III, code 50 or 52 is indicated on front air control as a result of conducting self-diagnosis.
1.CHECK CIRCUIT CONTINUITY BETWEEN OPTICAL SENSOR AND FRONT AIR CONTROL





1. Turn ignition switch OFF.
2. Disconnect front air control connector and optical sensor connector.
3. Check continuity between optical sensor harness connector
M302 (B) terminals 1 and 2 and front air control harness connector M50 (C) terminal 38 and M49 (A) terminal 1.






4. Check continuity between optical sensor harness connector
M302 (B) terminal 1 and 2 and ground.






Is the inspection result normal?
YES - GO TO 2.
NO - Repair harness or connector.
2.CHECK CIRCUIT CONTINUITY BETWEEN OPTICAL SENSOR AND BCM





1. Disconnect BCM connector.
2. Check continuity between optical sensor harness connector
M302 (B) terminal 3 and BCM harness connector M18 (A) terminal 18.






3. Check continuity between optical sensor harness connector
M302 (B) terminal 4 and ground.






Is the inspection result normal?
YES - Replace optical sensor. Service and Repair.
NO - Repair harness or connector.