Diagnosis Procedure

1. 1. Ignition switch ON.
   2. Check signal between main power window and door lock/unlock switch harness connector and ground with oscilloscope.

      Signal name	(+)		(-)	Signal (Reference value)
      	Main power window and door lock/unlock switch
      	Connector	Terminal
      Encoder signal 1	D7	5	Ground	Refer to following signals
      Encoder signal 2		4

      Courtesy of NISSAN

Is the inspection result normal?

YES>>

Replace main power window and door lock/unlock switch. Refer to Removal and Installation .

NO>>

GO TO 2.

1. 1. Ignition switch OFF.
   2. Disconnect main power window and door lock/unlock switch connector and front power window motor LH connector.
   3. Check continuity between main power window and door lock/unlock switch harness connector and front power window motor LH harness connector.

      Main power window and door lock/unlock switch		Front power window motor LH		Continuity
      Connector	Terminal	Connector	Terminal
      D7	4	D9	5	Yes
      	5		3

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

      Main power window and door lock/unlock switch		Ground	Continuity
      Connector	Terminal
      D7	4		No
      	5

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace harness.

1. 1. Connect main power window and door lock/unlock switch connector.
   2. Ignition switch ON.
   3. Check voltage between front power window motor LH harness connector and ground.

      (+)		(-)	Voltage (Approx.)
      Front power window motor LH
      Connector	Terminal
      D9	4	Ground	Battery voltage

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

GO TO 4.

1. 1. Ignition switch OFF.
   2. Disconnect main power window and door lock/unlock switch connector.
   3. Check continuity between main power window and door lock/unlock switch harness connector and front power window motor LH harness connector.

      Main power window and door lock/unlock switch		Front power window motor LH		Continuity
      Connector	Terminal	Connector	Terminal
      D7	14	D9	4	Yes

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

      Main power window and door lock/unlock switch		Ground	Continuity
      Connector	Terminal
      D7	14		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.

1. 1. Ignition switch OFF.
   2. Check continuity between front power window motor LH harness connector and ground.

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

Is the inspection result normal?

YES>>

Replace front power window motor LH. Refer to Removal and Installation .

NO>>

GO TO 6.

1. 1. Disconnect main power window and door lock/unlock switch connector.
   2. Check continuity between main power window and door lock/unlock switch harness connector and front power window motor LH harness connector.

      Main power window and door lock/unlock switch		Front power window motor LH		Continuity
      Connector	Terminal	Connector	Terminal
      D7	12	D9	6	Yes

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

      Main power window and door lock/unlock switch		Ground	Continuity
      Connector	Terminal
      D7	12		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.