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 2.

   NO: Replace the bulb.

2. CHECK TURN SIGNAL LAMP OUTPUT VOLTAGE 

   While operating the turn signal switch, check the voltage between the BCM harness connector M20 and ground.

   (+)			(-)	Voltage
   Connector		Terminal
   M20	LH	60	Ground
   	RH	61

   Is voltage reading as specified? 

   YES: GO TO 3.

   NO: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

3. CHECK TURN SIGNAL LAMP CIRCUIT FOR OPEN 
   1. Turn the ignition switch OFF.
   2. Disconnect BCM connector M20, front combination lamp connector, door mirror connector (if equipped with turn signal in the mirrors) and the rear combination lamp connector.
   3. Check continuity between the BCM harness connector (A) and the front combination lamp connector (B).

      A			B			Continuity
      Connector		Terminal	Connector		Terminal
      Front LH	M20	60	Without DTRL	E11	5	Yes
      Front RH		61		E107
      Front LH		60	With DTRL	E6
      Front RH		61		E108

      Fig 1: Checking Continuity Between BCM Harness Connector And Front Combination Lamp Connector

      Courtesy of NISSAN NORTH AMERICA, INC.
   4. Check continuity between the BCM harness connector (A) and the rear combination lamp connector (B).

      A			B		Continuity
      Connector		Terminal	Connector	Terminal
      Rear LH	M20	60	B35	4	Yes
      Rear RH		61	B105	4

      Fig 2: Checking Continuity Between BCM Harness Connector And Rear Combination Lamp Connector

      Courtesy of NISSAN NORTH AMERICA, INC.
   5. Check continuity between the BCM harness connector (A) and the door mirror connector (B) (if equipped with turn signals in the mirrors).

      A			B		Continuity
      Connector		Terminal	Connector	Terminal
      Door mirror LH	M20	60	D4	15	Yes
      Door mirror RH		61	D107	15

      Are continuity test results as specified? 

      YES: GO TO 4.

      NO: Repair the harnesses or connectors.

      Fig 3: Checking Continuity Between BCM Harness Connector And Door Mirror Connector

      Courtesy of NISSAN NORTH AMERICA, INC.
4. CHECK TURN SIGNAL LAMP SHORT CIRCUIT 

   Check continuity between the BCM harness connector M20 and ground.

   Connector		Terminal	-	Continuity
   LH	M20	60	Ground	No
   RH		61

   Does continuity exist? 

   YES: Repair the harnesses or connectors.

   NO: GO TO 5.

   Fig 4: Checking Continuity Between BCM Harness Connector M20 And Ground

   Courtesy of NISSAN NORTH AMERICA, INC.
5. CHECK TURN SIGNAL LAMP GROUND CIRCUIT 
   1. Check continuity between the front combination lamp harness connector and ground.

      Connector			Terminal	-	Continuity
      Without DTRL	Front LH	E11	4	Ground	Yes
      	Front RH	E107
      With DTRL	Front LH	E6
      	Front RH	E108

      Fig 5: Checking Continuity Between Front Combination Lamp Harness Connector And Ground

      Courtesy of NISSAN NORTH AMERICA, INC.
   2. Check continuity between the rear combination lamp harness connector and ground.

      Connector		Terminal	-	Continuity
      Rear LH	B35	6	Ground	Yes
      Rear RH	B105

      Fig 6: Checking Continuity Between Rear Combination Lamp Harness Connector And Ground

      Courtesy of NISSAN NORTH AMERICA, INC.
   3. Check continuity between the door mirrors and ground (if equipped with turn signals in the mirrors).

      Connector		Terminal	-	Continuity
      Door mirror RH	D107	11	Ground	Yes
      Door mirror LH	D4

      Are continuity test results as specified? 

      YES: Replace the malfunctioning lamp.

      NO: Repair the harnesses or connectors.

      Fig 7: Checking Continuity Between Door Mirrors And Ground

      Courtesy of NISSAN NORTH AMERICA, INC.