Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM " or "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: Replace the fuse after repairing the affected circuit.

      NO: GO TO 2

2. CHECK HEADLAMP (HI) OUTPUT VOLTAGE
   1. Turn the ignition switch OFF.
   2. Disconnect the front headlamp 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 headlamp connector and ground.
      Fig 1: Checking Voltage Between Headlamp Connector Terminal 1 And Ground

      Courtesy of NISSAN NORTH AMERICA, INC.

      (+)			(-)	Voltage
      Connector		Terminal
      LH	E11 (without DTRL)	1	Ground	Battery voltage
      	E6 (with DTRL)
      RH	E107

      Is battery voltage present? 

      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 headlamp harness connector (B).

      A			B		Continuity
      Connector		Terminal	Connector	Terminal
      LH	E123	55	E11 (without DTRL)	1	Yes
      			E6 (with DTRL)
      RH		56	E107

      Fig 2: Checking Continuity Between IPDM E/R Connector Terminals And Front Headlamp Connector Terminal

      Courtesy of NISSAN NORTH AMERICA, INC.

      Does continuity exist? 

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

      NO: Repair the harnesses or connectors.

4. CHECK FRONT HEADLAMP (HI) GROUND CIRCUIT

   Check continuity between the front headlamp harness connector terminal 2 and ground.

   Connector		Terminal	-	Continuity
   LH	E11 (without DTRL)	2	Ground	Yes
   	E6 (with DTRL)
   RH	E107

   Fig 3: Checking Continuity Between Front Headlamp Connector Terminal 2 And Ground

   Courtesy of NISSAN NORTH AMERICA, INC.

   Does continuity exist? 

   YES: Inspect the headlamp bulb.

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

   NO (LH with DTRL) >> GO TO 5.

5. CHECK CONTINUITY BETWEEN FRONT HEADLAMP LH (HI) AND DAYTIME LIGHT RELAY 1
   1. Disconnect daytime light relay 1 connector.
   2. Check continuity between front headlamp LH harness connector and daytime light relay 1 harness connector.

      Front headlamp LH		Daytime light relay 1		Continuity
      Connector	Terminal	Connector	Terminal
      E6	2	E103	3	Yes

      Does continuity exist? 

      YES: GO TO 6.

      NO: Repair the harness or connector.

6. CHECK DAYTIME LIGHT RELAY 1 GROUND CIRCUIT

   Check continuity between daytime light relay 1 harness connector and ground.

   Daytime light relay 1		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 1

   Check daytime light relay 1. Refer to "COMPONENT INSPECTION "

   Is the inspection result normal? 

   YES: Inspect the headlamp bulb.

   NO: Replace daytime light relay 1.