Diagnosis Procedure

1. CHECK ENCODER PULSE SIGNAL
   1. Turn ignition switch ON.
   2. Check signal between power window main switch harness connector and ground with oscilloscope.

   	(+)		(-)	Signal (Reference value)
   	Power window main switch
   Connector	Terminal
   D35	4	Ground	Refer to the following signal
   	5

   Fig 1: Checking Signal Between Power Window Main Switch Harness Connector And Ground Using Oscilloscope

   Courtesy of NISSAN NORTH AMERICA, INC.

   Is the inspection result normal? 

   YES: Replace power window main switch. Refer to "REMOVAL AND INSTALLATION ".

   NO: GO TO 2.

2. CHECK ENCODER SIGNAL CIRCUIT
   1. Turn ignition switch OFF.
   2. Disconnect power window main switch connector and front power window motor (driver side) connector.
   3. Check continuity between power window main switch harness connector and front power window motor (driver side) harness connector.

      Power window main switch		Front power window motor (driver side)		Continuity
      Connector	Terminal	Connector	Terminal
      D35	4	D37	5	Existed
      	5		4

   4. Check continuity between power window main switch harness connector and ground.

   Power window main switch		Ground	Continuity
   Connector	Terminal
   D35	4		Not existed
   	5

   Is the inspection result normal? 

   YES: GO TO 3.

   NO: Repair or replace harness.

3. CHECK ENCODER POWER SUPPLY
   1. Connect power window main switch connector.
   2. Turn ignition switch ON.
   3. Check voltage between front power window motor (driver side) harness connector and ground.

   (+)		(-)	Voltage (V)
   Front power window motor (driver side)
   Connector	Terminal
   D37	1	Ground	9 - 16

   Is the inspection result normal? 

   YES: GO TO  5.

   NO: GO TO 4.

4. CHECK ENCODER POWER SUPPLY CIRCUIT
   1. Turn ignition switch OFF.
   2. Disconnect power window main switch connector.
   3. Check continuity between power window main switch harness connector and front power window motor (driver side) harness connector.

      Power window main switch		Front power window motor (driver side)		Continuity
      Connector	Terminal	Connector	Terminal
      D35	14	D37	1	Existed

   4. Check continuity between power window main switch harness connector and ground.

   Power window main switch		Ground	Continuity
   Connector	Terminal
   D35 14			Not existed

   Is the inspection result normal? 

   YES: Replace power window main switch. Refer to "REMOVAL AND INSTALLATION ".

   NO: Repair or replace harness.

5. CHECK ENCODER GROUND CIRCUIT 1
   1. Turn ignition switch OFF.
   2. Disconnect power window main switch connector.
   3. Check continuity between power window main switch harness connector and front power window motor (driver side) harness connector.

      Power window main switch		Front power window motor (driver side)		Continuity
      Connector	Terminal	Connector	Terminal
      D35	12	D37	6	Existed

   4. Check continuity between power window main switch harness connector and ground.

   Power window main switch		Ground	Continuity
   Connector	Terminal
   D35	12		Not existed

   Is the inspection result normal? 

   YES: GO TO 6.

   NO: Repair or replace harness.

6. CHECK ENCODER GROUND CIRCUIT 2

1. Connect power window main switch connector.
2. Check continuity between power window main switch harness connector and ground.

Is the inspection result normal? 

YES: Replace front power window motor (driver side).

NO: Replace power window main switch. Refer to "REMOVAL AND INSTALLATION ".