Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

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

CHECK BCM INPUT SIGNAL
1. Select "BCM" on CONSULT.
2. Monitor "BACK DOOR SW" of "DATA MONITOR" while opening and closing the back door.
  When back door is open
  
  BACK DOOR SW: ON
  
  When back door is closed
  
  BACK DOOR SW: OFF
  
  Is the inspection result normal?
  
  YES: GO TO 2
  
  NO: GO TO 4
CHECK SELF-DIAGNOSIS OF BCM
Select "BCM" on CONSULT and perform "SELF-DIAGNOSIS".

Is the inspection result normal?

YES: GO TO 3

NO: Refer to "DTC INDEX ".
CHECK SELF-DIAGNOSIS OF COMBINATION METER
Select "METER/M&A" on CONSULT and perform "SELF-DIAGNOSIS".

Is the inspection result normal?

YES: Replace combination meter. Refer to "REMOVAL AND INSTALLATION ".

NO: Refer to "DTC INDEX ".
CHECK BACK DOOR SWITCH CIRCUIT
With Power Back Door
1. Turn ignition switch OFF.
2. Disconnect BCM connector M19 and back door latch (door ajar switch) connector D503.
3. Check continuity between BCM harness connector M19 (A) terminal 43 and back door latch (door ajar switch) harness connector D503 (B) terminal 7.
  43 - 7: Continuity should exist.
4. Check continuity between BCM harness connector M19 (A) terminal 43 and ground.
  43 - Ground: Continuity should not exist.
  
  Fig 1: Checking Continuity Between BCM Connector M19 Terminal 43 And Back Door Latch Connector D503 Terminal 7
  Courtesy of NISSAN NORTH AMERICA, INC.
Without Power Back Door
1. Turn ignition switch OFF.
2. Disconnect BCM connector M19 and back door switch connector D502.
3. Check continuity between BCM harness connector M19 (A) terminal 43 and back door switch harness connector D502 (B) terminal 3.
  43 - 3: Continuity should exist.
4. Check continuity between BCM harness connector M19 (A) terminal 43 and ground.
  43 - Ground: Continuity should not exist.
  
  Fig 2: Checking Continuity Between BCM Connector M19 Terminal 43 And Back Door Switch Connector D502 Terminal 3
  Courtesy of NISSAN NORTH AMERICA, INC.
  
  Is the inspection result normal?
  
  YES: GO TO 5
  
  NO: Repair harness or connector.
CHECK SWITCH GROUND CIRCUIT
With Power Back Door

Check continuity between back door latch (door ajar switch) harness connector D503 terminal 8 and ground.

8 - Ground: Continuity should exist.

Fig 3: Checking Continuity Between Back Door Latch Connector D503 Terminal 8 And Ground (With Power Back Door)
Courtesy of NISSAN NORTH AMERICA, INC.

Without Power Back Door

Check continuity between back door switch harness connector D502 terminal 1 and ground.

1 - Ground: Continuity should exist.

Fig 4: Checking Continuity Between Back Door Latch Connector D502 Terminal 1 And Ground (Without Power Back Door)
Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES: Replace back door latch (door ajar switch) (with power back door) or back door switch (without power back door).

NO: Repair harness or connector.