Diagnosis Procedure

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

1. CHECK HEADLAMP (HI) FUSES 
   1. Turn the ignition switch OFF.
   2. Check that the following fuses are not open.

      Unit	Location	Fuse No.	Capacity
      Headlamp HI (LH)	IPDM E/R	35	10A
      Headlamp HI (RH)	IPDM E/R	34	10A

      Is the fuse open? 

      YES: Repair the harness and replace the fuse.

      NO: GO TO 2.

2. CHECK HEADLAMP (HI) OUTPUT VOLTAGE 
   1. Turn the ignition switch OFF.
   2. Disconnect the front combination lamp connector.
   3. Turn the ignition switch ON.
   4. Turn the high beam headlamps ON.
   5. With the high beam headlamps ON, check the voltage between the combination lamp connector and ground.
      Fig 1: Checking Voltage Between Combination Lamp Connector And Ground

      Courtesy of NISSAN NORTH AMERICA, INC.

      (+)			(-)	Voltage
      Connector		Terminal
      LH	E11 (without DTRL)	2	Ground	Battery voltage
      	E6 (with DTRL)
      RH	E107 (without DTRL)
      	E108 (with DTRL)

      Are the voltage readings as specified? 

      YES: GO TO  4.

      NO: GO TO 3.

3. CHECK HEADLAMP (HI) CIRCUIT FOR OPEN 
   1. Turn the ignition switch OFF.
   2. Disconnect IPDM E/R connector E123.
   3. Check continuity between the IPDM E/R harness connector (A) and the front combination lamp harness connector (B).

      A			B		Continuity
      Connector		Terminal	Connector	Terminal
      LH	E123	55	E11 (without DTRL)	2	Yes
      			E6 (with DTRL)
      RH		56	E107 (without DTRL)	2
      			E108 (with DTRL)

      Does continuity exist? 

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

      NO: Repair the harnesses or connectors.

      Fig 2: Checking Continuity Between IPDM E/R Harness Connector (A) And Front Combination Lamp Harness Connector

      Courtesy of NISSAN NORTH AMERICA, INC.
4. CHECK FRONT COMBINATION LAMP (HI) GROUND CIRCUIT 

   Check continuity between the front combination lamp harness connector terminal and ground.

   Connector		Terminal	-	Continuity
   LH	E11 (without DTRL)	3	Ground	Yes
   	E6 (with DTRL)
   RH	E107 (without DTRL)
   	E108 (with DTRL)

   Does continuity exist? 

   YES: Inspect the headlamp bulb.

   NO (Except LH with DTRL): Repair the harness.

   NO (LH with DTRL): GO TO 5.

   Fig 3: Checking Continuity Between Front Combination Lamp Harness Connector Terminal And Ground

   Courtesy of NISSAN NORTH AMERICA, INC.
5. CHECK CONTINUITY BETWEEN FRONT COMBINATION LAMP LH (HI) AND DAYTIME LIGHT RELAY 
   1. Disconnect daytime light relay connector.
   2. Check continuity between front combination lamp LH harness connector and daytime light relay harness connector.

      Front combination lamp LH		Daytime light relay		Continuity
      Connector	Terminal	Connector	Terminal
      E6	3	E103	3	Yes

      Does continuity exist? 

      YES: GO TO 6.

      NO: Repair the harness or connector.

6. CHECK DAYTIME LIGHT RELAY GROUND CIRCUIT 

   Check continuity between daytime light relay harness connector and ground.

   Daytime light relay		Ground	Continuity
   Connector	Terminal
   E103	4		Yes

   Does continuity exist? 

   YES: GO TO 7.

   NO: Repair the harness or connector.

7. CHECK DAYTIME LIGHT RELAY 

   Check daytime light relay. Refer to "COMPONENT INSPECTION ".

   Is the inspection result normal? 

   YES: Inspect daytime light relay circuit for short. If OK, replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION OF IPDM E/R ".

   NO: Replace daytime light relay.