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Headlamp Low Beam Does Not Illuminate (Both Sides)

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK COMBINATION SWITCH INPUT SIGNAL 

    With CONSULT-II

    Select "BCM" on CONSULT-II. With "HEAD LAMP" data monitor, make sure "HEAD LAMP SW 1" and "HEAD LAMP SW 2" turns ON-OFF linked with operation of lighting switch.

    1. When lighting switch is 2ND position: HEAD LAMP SW 1 ON: HEAD LAMP SW 2 ON 
    Fig 1: Consult-II Display - Data Monitor
    G03495100Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II

    Refer to COMBINATION SWITCH INSPECTION

    OK or NG

    1. OK: GO TO 2.
    2. NG: Check lighting switch. Refer to COMBINATION SWITCH INSPECTION
  2. HEADLAMP ACTIVE TEST 

    With CONSULT-II

    1. Select "IPDM E/R" on CONSULT-II. and select "ACTIVE TEST' on "SELECT DIAG MODE" screen.
    2. Select "LAMPS" on "SELECT TEST" ITEM screen.
    3. Touch "LO" screen.
    4. Make sure headlamp low beam operates.
      1. Headlamp low beam should operate. 
      Fig 2: Consult-II Display - Headlamp Active Test
      G03495101Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II

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

    OK or NG

    1. OK: GO TO 3.
    2. NG: GO TO  4 .
  3. CHECK IPDM E/R 
    1. Select "IPDM E/R" on CONSULT-II. and select "DATA MONITOR" on "SELECT DIAG MODE" screen.
    2. Make sure "HL LO REQ" turns ON when lighting switch is in 2ND position.
      1. When lighting switch is 2ND position: HL LO REQ ON 
      Fig 3: Consult-II Display - Data Monitor
      G03495102Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK: Replace IPDM E/R.
    2. NG: Replace BCM. Refer to REMOVAL AND INSTALLATION OF BCM .
  4. CHECK HEADLAMP INPUT SIGNAL 

    With CONSULT-II

    1. Turn ignition switch OFF.
    2. Disconnect front combination lamp RH and LH connector.
    3. Select "IPDM E/R" on CONSULT-II. and select "ACTIVE TEST" on "SELECT DIAG MODE" screen.
    4. Select "LAMPS" on "SELECT TEST ITEM" screen.
    5. Touch "LO" screen.
    6. When headlamp low beam is operating, check voltage between front combination lamp RH and LH harness connector and ground.
      Fig 4: Checking Voltage Between Front Combination Lamp Rh And LH Harness Connector And Ground
      G03495103Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II

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

    Terminals Voltage
    (+) (-)
    Connector Terminal (Wire color)
    RH E107 7 (L/W) Ground Battery voltage
    LH E11 7(L)

    OK or NG

    1. OK: GO TO  6 .
    2. NG: GO TO 5.
  5. CHECK HEADLAMP CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect IPDM E/R connector.
    3. Check continuity between IPDM E/R harness connector E122 terminal 20 (R/Y) and front combination lamp RH harness connector E107 terminal 3 (R/Y).
      Fig 5: Checking Continuity Between IPDM E/R Harness Connector E122 Terminal 20 (R/Y) And Front Combination Lamp Rh Harness Connector E107 Terminal 3 (R/Y)
      G03495104Courtesy of NISSAN MOTOR CO., U.S.A.
      1. 20 (R/Y) - 3 (R/Y): Continuity should exist. 
    4. Check continuity between IPDM E/R harness connector E122 terminal 30 (L) and front combination lamp LH harness connector E11 terminal 3 (L).
      1. 30 (L) - 3 (L): Continuity should exist. 

    OK or NG

    1. OK: Replace IPDM E/R.
    2. NG: Repair harness or connector.
  6. CHECK HEADLAMP GROUND 
    1. Turn ignition switch OFF.
    2. Check continuity between front combination lamp RH harness connector E107 terminal 4 (B) and ground.
      1. 4 (B) - Ground: Continuity should exist. 
    3. Check continuity between front combination lamp LH harness connector E11 terminal 4 (B) and ground.
      1. 4 (B) - Ground: Continuity should exist. 
      Fig 6: Checking Continuity Between Front Combination Lamp Harness Connectors Terminal 4 (B) And Ground
      G03495105Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK: Check headlamp harness and connectors, ballasts (HID control unit), and xenon bulbs. Refer to "XENON HEADLAMP TROUBLE DIAGNOSIS  ".
    2. NG: Repair harness or connector.
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