Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

1. CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN 
   1. Turn ignition switch OFF.
   2. Disconnect BCM and combination switch.
   3. Check continuity between BCM harness connector and combination switch harness connector.

      System	BCM		Combination switch		Continuity
      	Connector	Terminal	Connector	Terminal
      OUTPUT 1	M18 (A)	6	M28 (B)	6	Yes
      OUTPUT 2		5		7
      OUTPUT 3		4		10
      OUTPUT 4		3		9
      OUTPUT 5		2		8

      Fig 1: Checking Output 1 - 5 System Circuit For Continuity

      Courtesy of NISSAN NORTH AMERICA, INC.

      Does continuity exist? 

      YES: GO TO 2

      NO: Repair or replace harness.

2. CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT 

   Check for continuity between BCM harness connector and ground.

   System	BCM		Ground	Continuity
   	Connector	Terminal
   OUTPUT 1	M18	6		No
   OUTPUT 2		5
   OUTPUT 3		4
   OUTPUT 4		3
   OUTPUT 5		2

   Fig 2: Checking Output 1 - 5 System Circuit For Continuity

   Courtesy of NISSAN NORTH AMERICA, INC.

   Does continuity exist? 

   YES: Repair or replace harness.

   NO: GO TO 3

3. CHECK BCM INPUT VOLTAGE 
   1. Connect BCM.
   2. Turn ignition switch ON.
   3. Check voltage between BCM harness connector and ground.
      Fig 3: Checking BCM Input Voltage

      Courtesy of NISSAN NORTH AMERICA, INC.

      System	Terminals			Voltage (Approx.)
      	(+)		(-)
      	BCM		Ground
      	Connector	Terminal
      INPUT 1	M18	6		Refer to "PHYSICAL VALUES ".
      INPUT 2		5
      INPUT 3		4
      INPUT 4		3
      INPUT 5		2

      Is the measurement value normal? 

      YES: GO TO 4

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

4. CHECK COMBINATION SWITCH 

   Check combination switch. Refer to "SYMPTOM TABLE ".

   Is the check result normal? 

   YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

   NO: Replace the combination switch (applicable parts). Refer to "REMOVAL AND INSTALLATION ".