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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Exterior Lighting System - Led Headlamp (Circuit Diagnosis)) >> Circuit Diagnosis >> Daytime Running Light Relay Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DAYTIME RUNNING LIGHT RELAY FUSE 
    1. Turn ignition switch OFF.
    2. Check that the following fuse is not blown:

    Unit

    Fuse No.

    Capacity

    Daytime running light relay

    50

    10A

    Is the inspection result normal?

    YES

    GO TO 2

    NO

    Replace the blown fuse after repairing the affected circuit.

  2. CHECK DAYTIME RUNNING LIGHT RELAY POWER SUPPLY 
    1. Remove daytime running light relay.
    2. Check voltage between daytime running light relay harness connector and ground.

      (+)

      (-)

      Voltage

      (Approx.)

      Daytime running light relay

      Connector

      Terminal

      E222

      2

      Ground

      Battery voltage

      5

    Is the inspection result normal?

    YES

    GO TO 3

    NO

    Repair or replace harness.

  3. CHECK DAYTIME RUNNING LIGHT RELAY 

    Check daytime running light relay. Refer to Component Inspection .

    Is the inspection result normal?

    YES

    GO TO 4

    NO

    Replace daytime running light relay.

  4. CHECK DAYTIME RUNNING LIGHT RELAY CONTROL SIGNAL OUTPUT 

    SYMBOL CONSULT

    1. Install daytime running light relay.
    2. Turn ignition switch ON.
    3. Select "EXTERNAL LAMPS" in "Active Test" mode of "IPDM E/R".
    4. While operating the test item, check voltage between IPDM E/R harness connector and ground.

      (+)

      (-)

      Test item

      Voltage

      (Approx.)

      IPDM E/R

      Connector

      Terminal

      E201

      85

      Ground

      EXTERNAL LAMPS

      Hi

      0 V

      Off

      Battery voltage

    Is the inspection result normal?

    YES

    Daytime running light relay circuit is OK.

    NO

    GO TO 5

    NO

    Replace IPDM E/R. Refer to Removal and Installation .

  5. CHECK DAYTIME RUNNING LIGHT RELAY CONTROL SIGNAL CIRCUIT (OPEN) 
    1. Turn ignition switch OFF.
    2. Remove daytime running light relay.
    3. Disconnect IPDM E/R harness connector.
    4. Check continuity between IPDM E/R harness connector and daytime running light relay harness connector.

      IPDM E/R

      Daytime running light relay

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      E201

      85

      E222

      1

      Yes

    Is the inspection result normal?

    YES

    GO TO 6

    NO

    Repair or replace harness.

  6. CHECK DAYTIME RUNNING LIGHT RELAY CONTROL SIGNAL CIRCUIT (SHORT) 

    Check continuity between IPDM E/R harness connector and ground.

    IPDM E/R

    Ground

    Continuity

    Connector

    Terminal

    E201

    85

    No

    Is the inspection result normal?

    YES

    Replace IPDM E/R. Refer to Removal and Installation .

    NO

    Repair or replace harness.