Diagnosis Procedure

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

1. CHECK ENCODER OPERATION
   
   
   1. Turn ignition switch ON.
   2. Check signal between main power window and door lock/unlock switch connector and ground with oscilloscope.
      Fig 1: Checking Signal Between Main Power Window And Door Lock/Unlock Switch Connector And Ground

      Courtesy of NISSAN NORTH AMERICA, INC.

      Terminals			Signal (Reference Value)
      (+)		(-)
      Main power window and door lock/unlock switch connector	Terminal
      D7	9	Ground	Refer To Following Signal
      	13

      Fig 2: Encoder Signal Waveform Graph

      Courtesy of NISSAN NORTH AMERICA, INC.

   Is the inspection result normal?

   YES 

   Check intermittent incident. Refer to INTERMITTENT INCIDENT .

   NO 

   GO TO STEP 2 

2. CHECK FRONT POWER WINDOW MOTOR LH POWER SUPPLY
   
   
   1. Disconnect front power window motor LH.
   2. Check voltage between front power window motor LH connector and ground.
      Fig 3: Checking Voltage Between Front Power Window Motor Connector Terminal 4 And Ground

      Courtesy of NISSAN NORTH AMERICA, INC.

      Terminal			Voltage (V) (Approx.)
      (+)		(-)
      Front power window motor LH connector	Terminal
      D9	4	Ground	10

   Is the measurement value within the specification?

   YES 

   GO TO STEP 4 

   NO 

   GO TO STEP 3 

3. CHECK HARNESS CONTINUITY 1
   
   
   1. Turn ignition switch OFF.
   2. Disconnect main power window and door lock/unlock switch.
   3. Check continuity between main power window and door lock/unlock switch connector and front power window motor LH connector.
      Fig 4: Checking Continuity Between Main Power Window And Door Lock/Unlock Switch Connector And Front Power Window Motor LH Connector

      Courtesy of NISSAN NORTH AMERICA, INC.

      Main Power Window And Door Lock/Unlock Switch Connector	Terminal	Front Power Window Motor LH Connector	Terminal	Continuity
      D7 (A)	15	D9 (B)	4	Yes

   4. Check continuity between main power window and door lock/unlock switch connector and ground.

      Main power window and door lock/unlock switch connector	Terminal	Ground	Continuity
      D7 (A)	15		No

   Is the inspection result normal?

   YES 

   Replace main power window and door lock/unlock switch. Refer to REMOVAL AND INSTALLATION .

   NO 

   Repair or replace harness.

4. CHECK GROUND CIRCUIT
   
   
   1. Turn ignition switch OFF.
   2. Check continuity between front power window motor LH connector and ground.
      Fig 5: Checking Continuity Between Front Power Window Motor LH Connector D9 Terminal 6 And Ground

      Courtesy of NISSAN NORTH AMERICA, INC.

      Front power window motor LH connector	Terminal	Ground	Continuity
      D9	6		Yes

   Is the inspection result normal?

   YES 

   GO TO STEP 6 

   NO 

   GO TO STEP 5 

5. CHECK HARNESS CONTINUITY 2
   
   
   1. Disconnect main power window and door lock/unlock switch.
   2. Check continuity between main power window and door lock/unlock switch connector and front power window motor LH connector.
      Fig 6: Checking Continuity Between Main Power Window And Door Lock/Unlock Switch Connector And Front Power Window Motor LH Connector

      Courtesy of NISSAN NORTH AMERICA, INC.

      Main Power Window And Door Lock/Unlock Switch Connector	Terminal	Front Power Window Motor LH Connector	Terminal	Continuity
      D7	2	D9	6	Yes

   Is the inspection result normal?

   YES 

   Replace main power window and door lock/unlock switch. Refer to REMOVAL AND INSTALLATION .

   NO 

   Repair or replace harness.

6. CHECK HARNESS CONTINUITY 3
   
   
   1. Disconnect main power window and door lock/unlock switch.
   2. Check continuity between main power window and door lock/unlock switch connector and front power window motor LH connector.
      Fig 7: Checking Continuity Between Main Power Window And Door Lock/Unlock Switch Connector And Front Power Window Motor LH Connector

      Courtesy of NISSAN NORTH AMERICA, INC.

      Main Power Window And Door Lock/Unlock Switch Connector	Terminal	Front Power Window Motor LH Connector	Terminal	Continuity
      D7 (A)	9	D9 (B)	5	Yes
      	13		3

   3. Check continuity between main power window and door lock/unlock switch connector and ground.

      Main power window and door lock/unlock switch connector	Terminal	Ground	Continuity
      D7 (A)	9		No
      	13

   Is the inspection result normal?

   YES 

   Replace front power window motor LH. Refer to REMOVAL AND INSTALLATION .

   NO 

   Repair or replace harness.