Diagnosis Procedure

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

1. CHECK WIPER RELAY OPERATION 

   IPDM E/R AUTO ACTIVE TEST

   1. Start IPDM E/R auto active test. Refer to "DIAGNOSIS DESCRIPTION ".
   2. Check that the front wiper operates at the LO/HI operation.

   CONSULT ACTIVE TEST

   1. Select "FRONT WIPER" of IPDM E/R active test item.
   2. While operating the test item, check front wiper operation.

      LO: Front wiper LO operation 

      HI: Front wiper HI operation 

      OFF: Stop the front wiper. 

      Is front wiper operation normal? 

      YES: GO TO  5

      NO: GO TO 2

2. CHECK FRONT WIPER MOTOR FUSE 
   1. Turn the ignition switch OFF.
   2. Check that the following fuse is not blown.

      Unit	Location	Fuse No.	Capacity
      Front wiper motor	IPDM E/R	39	30 A

      Is the fuse blown? 

      YES: Replace the fuse after repairing the affected circuit.

      NO: GO TO 3

3. CHECK FRONT WIPER MOTOR GROUND OPEN CIRCUIT 
   1. Disconnect front wiper motor.
   2. Check continuity between front wiper motor harness connector and ground.

      Front wiper motor		Ground	Continuity
      Connector	Terminal
      E23	1		Yes

      Fig 1: Checking Continuity Between Front Wiper Motor Harness Connector And Ground

      Courtesy of NISSAN NORTH AMERICA, INC.

      Does continuity exist? 

      YES: GO TO 4

      NO: Repair or replace harness.

4. CHECK FRONT WIPER MOTOR OUTPUT VOLTAGE 
   1. Turn the ignition switch ON.
   2. Select "FRONT WIPER" of IPDM E/R active test item.
   3. With operating the test item, check voltage between IPDM E/R harness connector and ground.

      Terminals			Test item	Voltage (Approx.)
      (+)		(-)
      IPDM E/R		Ground	FRONT WIPER
      Connector	Terminal
      E121	32		LO	Battery voltage
      			OFF	0 V
      	35		HI	Battery voltage
      			OFF	0 V

      Fig 2: Checking Voltage Between IPDM E/R Harness Connector And Ground

      Courtesy of NISSAN NORTH AMERICA, INC.

      Is the measurement value normal? 

      YES: Replace front wiper motor. Refer to "WIPER MOTOR AND LINKAGE ".

      NO: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION OF IPDM E/R ".

5. CHECK FRONT WIPER REQUEST SIGNAL INPUT 

   CONSULT DATA MONITOR

   1. Select "FR WIP REQ" of IPDM E/R data monitor item.
   2. Switch the front wiper switch to HI and LO.
   3. With operating the front wiper switch, check the status of "FR WIP REQ".

      Monitor item	Condition		Monitor status
      FR WIP REQ	Front wiper switch HI	HI	ON
      		STOP	OFF
      	Front wiper switch LO	LOW	ON
      		STOP	OFF

      Is the status of item normal? 

      YES: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION OF IPDM E/R ".

      NO: GO TO 6

6. CHECK COMBINATION SWITCH (WIPER AND WASHER SWITCH) 
   1. Perform the inspection of the combination switch (wiper and washer switch). Refer to "SYMPTOM TABLE ".

      Is combination switch (wiper and washer switch) normal? 

      YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

      NO: Repair or replace the applicable parts.