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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1769 (Lighting System (Sedan)) >> Headlamp (For CANADA) - Daytime Light System - >> Daytime Light Control Does Not Operate Properly
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Daytime Light Control Does Not Operate Properly

WARNING: This page is about a different car, the 2006 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DAYTIME LIGHT CONTROL UNIT 
    1. Turn ignition switch OFF.
    2. Disconnect daytime light control unit connector.
    3. Check voltage between daytime light control unit harness connector and ground.
      TERMINALS VOLAGE CHART

      Terminal Voltage
      (+) (-)
      Connector Terminal
      E25 2 Ground Battery voltage
      E26 3
      Fig 1: Identifying Voltage Between Daytime Light Control Unit Connector And Ground
      G04123603Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK: GO TO 2.
    • NG: Repair or replace daytime light control unit power supply circuit harness.
  2. CHECK GROUND FOR DAYTIME LIGHT CONTROL UNIT 

    Check continuity between daytime light control unit harness connector E26 terminal 9 and ground.

    9 - Ground : Continuity should exist. 

    OK or NG 

    • OK: GO TO 3.
    • NG: Repair harness or connector.
      Fig 2: Identifying Continuity Between Daytime Light Control Unit Connector E26 Terminal 9 And Ground
      G04123604Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK PARKING BRAKE SWITCH CIRCUIT 
    1. Disconnect parking brake switch connector.
    2. Check continuity between daytime light control unit harness connector E25 terminal 10 and parking brake switch harness connector B37*1 or E110*2 terminal 1.

      10 - 1 : Continuity should exist. 

      *1: M/T, *2: A/T

      Fig 3: Identifying Continuity Between Daytime Light Control Unit E25 Terminal 10 And Parking Brake Switch B37
      G04123605Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK: GO TO 4.
    • NG: Repair harness or connector.
  4. CHECK PARKING BRAKE SWITCH 
    1. Connect daytime light control unit connector and parking brake switch connector.
    2. Turn ignition switch ON.
    3. When parking brake is released, check voltage between parking brake switch harness connector B37*1 or E110*2 terminal 1 and ground.

      1 - Ground : Battery voltage. 

      *1: M/T, *2: A/T

      Fig 4: Identifying Voltage Between Parking Brake Switch Harness Connector B37
      G04123606Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK: GO TO 5.
    • NG: Replace parking brake switch.
  5. CHECK ALTERNATOR CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect daytime light control unit connector.
    3. Start engine running.
    4. Check voltage between daytime light control unit harness connector E25 terminal 11 and ground.

      11 - Ground : Battery voltage. 

      Fig 5: Identifying Voltage Between Daytime Light Control Unit Connector E25 Terminal 11 And Ground
      G04123607Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK: GO TO 6.
    • NG: Repair harness or connector.
  6. CHECK POWER CIRCUIT BETWEEN DAYTIME LIGHT CONTROL UNIT AND HEADLAMP LH 
    1. Turn ignition switch OFF.
    2. Disconnect daytime light control unit connector and front combination lamp LH connector.
    3. Check continuity between daytime light control unit harness connector E26 terminal 6 and front combination lamp LH harness connector E41 terminal 2.

      6 - 2 : Continuity should exist. 

      Fig 6: Identifying Continuity Between Daytime Light Control Unit E26 Terminal 6 And Front Combination Lamp LH E41 Terminal 2
      G04123608Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK: GO TO 7.
    • NG: Repair harness or connector.
  7. CHECK GROUND CIRCUIT BETWEEN DAYTIME LIGHT CONTROL UNIT AND HEADLAMP LH 

    Check continuity between daytime light control unit harness connector E26 terminal 7 and front combination lamp LH harness connector E41 terminal 8.

    7 - 8 : Continuity should exist. 

    Fig 7: Identifying Continuity Between Daytime Light Control Unit E26 Terminal 7 And Front Combination Lamp LH E41 Terminal 8
    G04123609Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK: GO TO 8.
    • NG: Repair harness or connector.
  8. CHECK POWER CIRCUIT BETWEEN DAYTIME LIGHT CONTROL UNIT AND HEADLAMP RH 
    1. Disconnect front combination lamp RH connector.
    2. Check continuity between daytime light control unit harness connector E26 terminal 8 and front combination lamp RH harness connector E24 terminal 2.
      Fig 8: Identifying Continuity Between Daytime Light Control Unit E26 Terminal 8 And Front Combination Lamp RH E24 Terminal 2
      G04123610Courtesy of NISSAN MOTOR CO., U.S.A.

      8 - 2 : Continuity should exist. 

    OK or NG 

    • OK: GO TO 9.
    • NG: Repair harness or connector.
  9. CHECK DAYTIME LIGHT CONTROL UNIT 
    1. Connect daytime light control unit connector.
    2. Parking brake is released and engine is run.
    3. Check voltage between front combination lamp LH harness connector E41 terminal 2 and ground, when releasing parking brake with engine running and turning lighting switch to OFF.

      2 - Ground : Battery voltage. 

      Fig 9: Identifying Voltage Between Front Combination Lamp LH Connector E41 Terminal 2 And Ground
      G04123611Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK
      • Check connector for connection, bend and loose fit and repair.
      • Check headlamp bulb.
    • NG: Replace daytime light control unit.
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