Headlamp Low Beam Does Not Illuminate (Both Sides)

With CONSULT-III

1. Select "BCM" on CONSULT-III. Select "HEAD LAMP".
2. Select "DATA MONITOR". Make sure that "HEAD LAMP SW 1" and "HEAD LAMP SW 2" turns ON-OFF linked with operation of lighting switch.

   When lighting switch is 2ND position : HEAD LAMP SW 1 ON 

   : HEAD LAMP SW 2 ON 

Without CONSULT-III

Refer to "COMBINATION SWITCH INSPECTION ".

OK or NG 

OK: GO TO 2.

NG: Check combination switch (lighting switch). Refer to "COMBINATION SWITCH INSPECTION ".

With CONSULT-III

1. Select "IPDM E/R" on CONSULT-III. Select "ACTIVE TEST".
2. Select "LAMPS" on "SELECT TEST ITEM" screen.
3. Touch "LO" screen.
4. Make sure headlamp low beam operates.

   Headlamp low beam should operate. 

Without CONSULT-III

1. Start auto active test. Refer to "AUTO ACTIVE TEST ".
2. Make sure headlamp low beam operates.

   Headlamp low beam should operate. 

OK or NG 

OK: GO TO 3.

NG: GO TO  4.

1. Select "IPDM E/R" on CONSULT-III. Select "DATA MONITOR".
2. Make sure "HL LO REQ" turns ON when lighting switch is in 2ND position.

   When lighting switch is 2ND position : HL LO REQ ON 

OK or NG 

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

NG: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".

Inspect 15A fuse [No. 40 (LH) and No. 41 (RH) located in IPDM E/R].

OK or NG 

OK: GO TO 5.

NG: Repair harness.

Inspect inoperative headlamp bulbs.

OK or NG 

OK: GO TO 6.

NG: Replace headlamp bulb. Refer to "HEADLAMP (HIGH/LOW) ".

With CONSULT-III

1. Turn ignition switch OFF.
2. Disconnect headlamp connector.
3. Turn ignition switch ON.
4. Select "IPDM E/R" on CONSULT-III. Select "ACTIVE TEST".
5. Select "LAMPS" on "SELECT TEST ITEM" screen.
6. Touch "LO" screen.
7. When headlamp low beam is operating, check voltage between headlamp harness connector and ground.
   CONNECTOR TERMINAL VOLTAGE SPECIFICATION
   
   

   Terminal				Voltage
   (+)			(-)
   Headlamp connector		Terminal
   RH	E20	3	Ground	Battery voltage
   LH	E21

   Fig 1: Checking Voltage Between Headlamp Harness Connector And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-III

1. Turn ignition switch OFF.
2. Disconnect headlamp connector.
3. Turn ignition switch ON.
4. Start auto active test. Refer to "AUTO ACTIVE TEST ".
5. When headlamp low beam is operating, check voltage between headlamp harness connector and ground.
   CONNECTOR TERMINAL VOLTAGE SPECIFICATION
   
   

   Terminal				Voltage
   (+)			(-)
   Headlamp connector		Terminal
   RH	E20	3	Ground	Battery voltage
   LH	E21

OK or NG 

OK: GO TO 7.

NG: GO TO  8.

1. Turn ignition switch OFF.
2. Check continuity between headlamp harness connector (B) and ground.
   CONNECTOR TERMINAL CONTINUITY SPECIFICATION
   
   

   Headlamp connector		Terminal	Ground	Continuity
   RH	E20	5		Yes
   LH	E21

OK or NG 

OK: Check front combination lamp connector for damage or poor connection. Repair as necessary.

NG: Repair harness.

Fig 2: Checking Continuity Between Headlamp Harness Connector And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector (A) and headlamp harness connector (B).
   CONNECTOR TERMINAL CONTINUITY SPECIFICATION
   
   

   Circuit	A		B		Continuity
   	Connector	Terminal	Connector	Terminal
   RH	E47	54	E20	3	Yes
   LH		52	E21

OK or NG 

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

NG: Repair harness or connector.

Fig 3: Checking Continuity Between IPDM E/R Harness Connector And Headlamp Harness Connector

Courtesy of NISSAN MOTOR CO., U.S.A.