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Diagnosis Procedure
1.CHECK OPTICAL SENSOR POWER SUPPLY
  1. Ignition switch ON.
  2. Turn lighting switch AUTO.
  3. Check voltage between optical sensor harness connector and ground.
    +-Voltage
    Optical sensor
    ConnectorTerminal
    M131Ground4.65 – 5.5 V
Is the inspection result normal?
.
.
 
2.CHECK OPTICAL SENSOR GROUND
Check voltage between optical sensor harness connector and ground.
+-Voltage
(Approx.)
Optical sensor
ConnectorTerminal
M133Ground0 V
Is the inspection result normal?
.
.
 
3.CHECK OPTICAL SENSOR SIGNAL
Check voltage between optical sensor harness connector and ground.
+-Voltage
Optical sensor
ConnectorTerminal
M132Ground0.1 – 4.4 V
Is the inspection result normal?
.
Replace optical sensor. Refer to Removal and Installation.
 
4.CHECK OPTICAL SENSOR POWER SUPPLY CIRCUIT (OPEN)
  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 sensorBCMContinuity
    ConnectorTerminalConnectorTerminal
    M131M1828Existed
Is the inspection result normal?
.
Repair or replace harness.
 
5.CHECK OPTICAL SENSOR POWER SUPPLY CIRCUIT (SHORT)
Check continuity between optical sensor harness connector and ground.
Optical sensor—Continuity
ConnectorTerminal
M131GroundNot existed
Is the inspection result normal?
Replace BCM. Refer to Removal and Installation.
Repair or replace harness.
 
6.CHECK OPTICAL SENSOR GROUND CIRCUIT
  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 sensorBCMContinuity
    ConnectorTerminalConnectorTerminal
    M133M1829Existed
Is the inspection result normal?
Replace BCM. Refer to Removal and Installation.
Repair or replace harness.
 
7.CHECK OPTICAL SENSOR SIGNAL CIRCUIT (OPEN)
  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 sensorBCMContinuity
    ConnectorTerminalConnectorTerminal
    M132M188Existed
Is the inspection result normal?
.
Repair or replace harness.
 
8.CHECK OPTICAL SENSOR SIGNAL CIRCUIT (SHORT)
Check continuity between optical sensor harness connector and ground.
Optical sensor—Continuity
ConnectorTerminal
M132GroundNot existed
Is the inspection result normal?
Replace BCM. Refer to Removal and Installation.
Repair or replace harness.