Diagnosis Procedure

1. Turn ignition switch ON.
2. Check signal between left front door control unit harness connector and ground using oscilloscope.

   (+)		(-)	Condition		Voltage (approx.)
   Left front door control unit
   Connector	Terminal
   D16	41	Ground	Front power window LH	Operating	12 V
   				Other than above	Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES

INSPECTION END.

NO

GO TO 2.

1. Turn ignition switch OFF.
2. Disconnect power window main switch connector and left front door control unit connector.
3. Check continuity between power window main switch harness connector and left front door control unit harness connector.

   Power window main switch		Left front door control unit		Continuity
   Connector	Terminal	Connector	Terminal
   D38	1	D16	41	Existed

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

   Power window main switch		Ground	Continuity
   Connector	Terminal
   D38	1		Not existed

Is the inspection result normal?

YES

Replace power window main switch. Refer to Removal and Installation .

NO

Repair or replace harness.