Diagnosis Procedure

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

1. CHECK POWER SUPPLY

   Check if the following fuse in the IPDM E/R is blown.

   COMPONENT PARTS	AMPERE	FUSE NO.
   IPDM E/R	15A	43

   Is the inspection result normal? 

   YES: GO TO 2

   NO: If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2. CHECK DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT
   1. Turn ignition switch ON.
   2. Check voltage between IPDM E/R connector E120 terminal 23 and ground.
      Fig 1: Checking Voltage Between IPDM E/R Connector E120 Terminal 23 And Ground

      Courtesy of NISSAN NORTH AMERICA, INC.

      Connector	Terminal		Condition	Voltage (V) (Approx.)
      	(+)	(-)
      E120	23	Ground	Rear window defogger switch ON	Battery voltage
      			Rear window defogger switch OFF	0

      Is the inspection result normal? 

      YES: GO TO 3

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

3. CHECK DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT
   1. Turn ignition switch OFF.
   2. Disconnect door mirror LH.
   3. Turn ignition switch ON.
   4. Check voltage between door mirror LH harness connector terminal 1 and ground.
      WITHOUT AUTOMATIC DRIVE POSITIONER
      
      

      Connector	Terminal		Condition	Voltage (V) (Approx.)
      	(+)	(-)
      D4	1	Ground	Rear window defogger switch ON	Battery voltage
      			Rear window defogger switch OFF	0

      Fig 2: Checking Voltage Between Door Mirror LH Connector D4 Terminal 1 And Ground

      Courtesy of NISSAN NORTH AMERICA, INC.
      WITH AUTOMATIC DRIVE POSITIONER
      
      

      Connector	Terminal		Condition	Voltage (V) (Approx.)
      	(+)	(-)
      D18	1	Ground	Rear window defogger switch ON	Battery voltage
      			Rear window defogger switch OFF	0

      Is the inspection result normal? 

      YES: GO TO 4

      NO: Repair or replace harness.

4. CHECK DOOR MIRROR DEFOGGER CIRCUIT
   1. Turn ignition switch OFF.
   2. Disconnect IPDM E/R.
   3. Check continuity between IPDM E/R connector E120 (A) terminal 23 and door mirror LH harness connector (B) terminal 1.
      Fig 3: Checking Continuity Between IPDM E/R Connector E120 Terminal 23 And Door Mirror LH Harness Connector Terminal 1

      Courtesy of NISSAN NORTH AMERICA, INC.
      WITHOUT AUTOMATIC DRIVE POSITIONER
      
      

      Connector	Terminal	Connector	Terminal	Continuity
      A		B
      IPDM E/R: E120	23	Door mirror: D4	1	Yes

      WITH AUTOMATIC DRIVE POSITIONER
      
      

      Connector	Terminal	Connector	Terminal	Continuity
      A		B
      IPDM E/R: E120	23	Door mirror: D18	1	Yes

   4. Check continuity between IPDM E/R connector E120 terminal 23 and ground.

      A		Ground	Continuity
      Connector	Terminal
      IPDM E/R: E120	23		No

      Is the inspection result normal? 

      YES: GO TO 5.

      NO: Repair or replace harness.

5. CHECK DOOR MIRROR DEFOGGER GROUND CIRCUIT

   Check continuity between door mirror LH harness connector D4 (without ADP), D18 (with ADP) terminal 6 and ground.

   6 - Ground: Continuity should exist  .

   Fig 4: Checking Continuity Between Door Mirror Connector D4 (LH), D18 Terminal 6 And Ground

   Courtesy of NISSAN NORTH AMERICA, INC.

   Is the inspection result normal? 

   YES: GO TO 6

   NO: Repair or replace harness.

6. CHECK DOOR MIRROR DEFOGGER LH

   Check door mirror defogger LH.

   Refer to "COMPONENT INSPECTION ".

   Is the inspection result normal? 

   YES: GO TO 7

   NO: Replace door mirror. Refer to "DOOR MIRROR ASSEMBLY ".

7. CHECK INTERMITTENT INCIDENT

   Check intermittent incident.

   Refer to "INTERMITTENT INCIDENT ".

   Is the inspection result normal? 

   YES: Check the following.

   • Battery power supply circuit.
   • IPDM E/R.

   NO: Repair or replace the malfunctioning parts.