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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1074 (Exterior Lighting System) >> DTC/Circuit Diagnosis >> Daytime Light Relay Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. CHECK DAYTIME LIGHT RELAY 1 FUSE
    1. Turn the ignition switch OFF.
    2. Check that the following fuse is not open.
      Unit Location Fuse No. Capacity
      Daytime light relay 1 IPDM E/R 45 10A

      Is the fuse open? 

      YES: Replace the fuse after repairing the affected circuit.

      NO: GO TO 2

  2. CHECK IPDM E/R OUTPUT SIGNAL
    1. Turn the ignition switch OFF.
    2. Disconnect the daytime light relay 1 connector.
    3. Turn the ignition switch ON.
    4. Check the voltage between the daytime light relay 1 harness connector and ground.
      (+) (-) Voltage
      Connector Terminal
      E103 2 Ground Battery voltage
      5

      Is battery voltage present? 

      YES: GO TO 3

      NO: GO TO  5

  3. CHECK DAYTIME LIGHT RELAY 1 CIRCUIT
    1. Turn the ignition switch OFF.
    2. Disconnect IPDM E/R connector E122.
    3. Check continuity between the IPDM E/R harness connector and the daytime light relay 1 harness connector.
      IPDM E/R Daytime light relay 1 Continuity
      Connector Terminal Connector Terminal
      E122 44 E103 1 Yes
    4. Check continuity between the daytime light relay 1 harness connector and ground.
      Connector Terminal - Continuity
      E103 1 Ground No

      Is the measurement value normal? 

      YES: GO TO 4

      NO: Repair the harnesses or connectors.

  4. CHECK DAYTIME LIGHT RELAY 1

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

    Is the inspection result normal? 

    YES: Check headlamp (HI) circuit. If OK, replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION OF IPDM E/R ". If NG, refer to "DIAGNOSIS PROCEDURE ".

    NO: Replace daytime light relay 1.

  5. CHECK DAYTIME LIGHT RELAY CIRCUIT FOR OPEN
    1. Turn the ignition switch OFF.
    2. Disconnect IPDM E/R connector E119.
    3. Check continuity between the IPDM E/R harness connector and the daytime light relay 1 harness connector.
      IPDM E/R Daytime light relay 1 Continuity
      Connector Terminal Connector Terminal
      E119 10 E103 2 Yes
      5

      Does continuity exist? 

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

      NO: Repair the harnesses or connectors.

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