Optical Sensor

OPTICAL SENSOR


Optical Sensor Diagnosis Procedure


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 A/C auto amp. as a result of conducting self-diagnosis.
1.CHECK CIRCUIT CONTINUITY BETWEEN OPTICAL SENSOR AND A/C AUTO AMP.





1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector and optical sensor connector.
3. Check continuity between optical sensor harness connector
M145 (B) terminals 1 and 2 and A/C auto amp. harness connector M50 (C) terminal 42 and M49 (A) terminal 1.





4. Check continuity between optical sensor harness connector M145 (B) terminal 1 and 2 and ground.
1, 2 - Ground. : Continuity should not exist.
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 M145 (B) terminal 3 and 4 and BCM harness connector M18 (A) terminal 18 and M20 (C) terminal 58.





3. Check continuity between optical sensor harness connector M145 (B) terminal 4 and ground.
3, 4 - Ground : Continuity should not exist.
Is the inspection result normal?
YES >> Replace optical sensor. Refer to Service and Repair.
NO >> Repair harness or connector.