Diagnosis Procedure

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

1. CHECK TURN SIGNAL LAMP BULB
   
   

   Check the applicable lamp bulb to be sure the proper bulb standard is in use and the bulb is not open.

   Is the bulb OK?

   YES 

   GO TO STEP 2. 

   NO 

   Replace the bulb.

2. CHECK TURN SIGNAL LAMP OUTPUT VOLTAGE
   
   
   1. Turn the ignition switch OFF.
   2. Disconnect the front combination lamp harness connector, door mirror harness connector or the side turn signal harness connector or the rear combination lamp harness connector in question.
   3. Turn the ignition switch ON.
   4. Operate the turn signal switch.
   5. While the turn signal is operating, check the voltage between the front combination lamp harness connector and ground.

      (+)			(-)	Voltage (Approx.)
      Connector		Terminal
      LH	E105	1	Ground	Courtesy of NISSAN NORTH AMERICA, INC.
      RH	E103

   6. While the turn signal is operating, check the voltage between the door mirror harness connector and ground.

      (+)			(-)	Voltage (Approx.)
      Connector		Terminal
      LH	D14	13	Ground	Courtesy of NISSAN NORTH AMERICA, INC.
      RH	D107

   7. While the turn signal is operating, check the voltage between the rear combination lamp harness connector and ground.

      (+)			(-)	Voltage (Approx.)
      Connector		Terminal
      LH	B90	3	Ground	Courtesy of NISSAN NORTH AMERICA, INC.
      RH	B102

   Are the inspection results normal?

   YES 

   GO TO STEP 5  .

   NO 

   GO TO 3.

3. CHECK TURN SIGNAL LAMP CIRCUIT FOR OPEN
   
   
   1. Turn the ignition switch OFF.
   2. Disconnect BCM harness connector E29, M18 or B23.
   3. Check continuity between the BCM harness connector E29 and the front combination lamp harness connector.

      BCM			Front combination lamp		Continuity
      Connector		Terminal	Connector	Terminal
      LH	E29	135	E105	1	Yes
      RH		136	E103

   4. Check continuity between the BCM harness connector B23 and the door mirror harness connector.

      BCM			Door mirror		Continuity
      Connector		Terminal	Connector	Terminal
      LH	M18	2	D14	13	Yes
      RH		3	D107

   5. Check continuity between the BCM harness connector B23 and the rear combination lamp harness connector.

      BCM			Rear combination lamp		Continuity
      Connector		Terminal	Connector	Terminal
      LH	B23	157	B90	3	Yes
      RH		160	B102

   Are the inspection results normal?

   YES 

   GO TO STEP 4. 

   NO 

   Repair or replace the harness or connectors.

4. CHECK TURN SIGNAL LAMP SHORT CIRCUIT
   
   
   1. Check continuity between the BCM harness connector E29 and ground.

      BCM			Ground	Continuity
      Connector		Terminal
      LH	E29	135		No
      RH		136

   2. Check continuity between the BCM harness connector M18 and ground.

      BCM			Ground		Continuity
      Connector		Terminal
      LH	B18	2			No
      RH		3

   3. Check continuity between the BCM harness connector M23 and ground.

      BCM			Ground		Continuity
      Connector		Terminal
      LH	B23	157			No
      RH		160

   Are the inspection results normal?

   YES 

   Replace BCM. Refer to REMOVAL AND INSTALLATION (with Intelligent Key system) or REMOVAL AND INSTALLATION (without Intelligent Key system).

   NO 

   Repair or replace the harness or connectors.

5. CHECK TURN SIGNAL LAMP GROUND CIRCUIT
   
   
   1. Turn the ignition switch OFF.
   2. Check continuity between the front combination lamp harness connector, the door mirror connector or the rear combination lamp harness connector in question and ground.

      Front combination lamp			(-)	Continuity
      Connector		Terminal
      LH	E105	2	Ground	Yes
      RH	E103

   3. Check continuity between the door mirror harness connector and ground.

      Door mirror			(-)	Continuity
      Connector		Terminal
      LH	D14	14	Ground	Yes
      RH	D107

   4. Check continuity between the rear combination lamp harness connector and ground.

      Rear combination lamp			(-)	Continuity
      Connector		Terminal
      LH	B90	4	Ground	Yes
      RH	B102

   Are the inspection results normal?

   YES 

   Replace the malfunctioning lamp.

   NO 

   Repair or replace the harness or connectors.