Component Function Check

Component Function Check

1. CHECK OPTICAL SENSOR SIGNAL

   1. 1. Ignition switch ON.

      2. Turn lighting switch AUTO.

      3. With the optical sensor illuminating, check the exterior lamps status.

         Condition		Exterior lamp status
         Optical sensor	When illuminating	Turns OFF
         	When shutting off light	Turns ON

   Is the inspection result normal?

   YES>>

   Optical sensor circuit is normal.

   NO>>

   Refer to Diagnosis Procedure.

Diagnosis Procedure

Diagnosis Procedure

1. CHECK OPTICAL SENSOR POWER SUPPLY

   1. 1. Ignition switch ON.

      2. Turn lighting switch AUTO.

      3. Check voltage between optical sensor harness connector and ground.

         +		-	Voltage (Approx.)
         Optical sensor
         Connector	Terminal
         M72	1	Ground	5 V

   Is the inspection result normal?

   YES >>

   GO TO 2.

   NO >>

   GO TO 5.

2. CHECK OPTICAL SENSOR GROUND

   1. 1. Disconnect optical sensor connector

      2. Check continuity between optical sensor harness connector and ground.

      Optical sensor		—	Continuity
      Connector	Terminal
      M72	3	Ground	Yes

   Is the inspection result normal?

   YES >>

   GO TO 3.

   NO >>

   GO TO 7.

3. CHECK OPTICAL SENSOR SIGNAL

   1. 1. Connect optical sensor connector.

      2. Check voltage between optical sensor harness connector and ground.

      +		-	Voltage (Approx.)
      Optical sensor
      Connector	Terminal
      M72	2	Ground	0.1 – 4.4 V

   Is the inspection result normal?

   YES >>

   GO TO 8.

   NO >>

   GO TO 4.

4. CHECK OPTICAL SENSOR SIGNAL CIRCUIT (SHORT)

   1. 1. Ignition switch OFF.

      2. Disconnect optical sensor connector and BCM connector M84.

      3. Check continuity between optical sensor harness connector and ground.

      Optical sensor		—	Continuity
      Connector	Terminal
      M66	2	Ground	No

   Is the inspection result normal?

   YES >>

   Replace optical sensor. Refer to Removal and Installation.

   NO >>

   Repair or replace harness.

5. CHECK OPTICAL SENSOR POWER SUPPLY CIRCUIT (OPEN)

   1. 1. Ignition switch OFF.

      2. Disconnect optical sensor connector and BCM connector.

      3. Check continuity between optical sensor harness connector and BCM harness connector.

         Optical sensor		BCM		Continuity
         Connector	Terminal	Connector	Terminal
         M72	1	M84	28	Yes

   Is the inspection result normal?

   YES >>

   GO TO 6.

   NO >>

   Repair or replace harness.

6. CHECK OPTICAL SENSOR POWER SUPPLY CIRCUIT (SHORT)

   1. Check continuity between optical sensor harness connector and ground.

      Optical sensor		—	Continuity
      Connector	Terminal
      M72	1	Ground	No

   Is the inspection result normal?

   YES >>

   Replace BCM. Refer to Removal and Installation.

   NO >>

   Repair or replace harness.

7. CHECK OPTICAL SENSOR GROUND CIRCUIT

   1. 1. Ignition switch OFF.

      2. Disconnect optical sensor connector and BCM connector.

      3. Check continuity between optical sensor harness connector and BCM harness connector.

         Optical sensor		BCM		Continuity
         Connector	Terminal	Connector	Terminal
         M72	3	M84	29	Yes

   Is the inspection result normal?

   YES >>

   Replace BCM. Refer to Removal and Installation.

   NO >>

   Repair or replace harness.

8. CHECK OPTICAL SENSOR SIGNAL CIRCUIT (OPEN)

   1. 1. Ignition switch OFF.

      2. Disconnect optical sensor connector and BCM connector.

      3. Check continuity between optical sensor harness connector and BCM harness connector.

         Optical sensor		BCM		Continuity
         Connector	Terminal	Connector	Terminal
         M72	2	M84	8	Yes

   Is the inspection result normal?

   YES >>

   Replace BCM. Refer to Removal and Installation.

   NO >>

   Repair or replace harness.