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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1074 (Exterior Lighting System) >> Symptom Diagnosis >> Daytime Light System Inoperative >> 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.
NOTE: Before performing the diagnosis, check that the following is normal.
  • High beam lamp function
  • Parking brake warning lamp
  • Engine operation status
  1. COMBINATION SWITCH (LIGHTING AND TURN SIGNAL SWITCH) INSPECTION

    Check the combination switch (lighting and turn signal switch). Refer to "SYMPTOM TABLE ".

    Is the combination switch (lighting and turn signal switch) normal? 

    YES: GO TO 2.

    NO: Repair or replace the malfunctioning part.

  2. CHECK DAYTIME LIGHT REQUEST SIGNAL INPUT

    WITH CONSULT DATA MONITOR

    1. Parking brake switch is released.
    2. Start engine.
    3. Select "DTRL REQ" of IPDM E/R DATA MONITOR item.
    4. While operating the combination switch (lighting and turn signal switch), check the monitor status.
      Monitor item Condition Monitor status
      DTRL REQ combination switch (lighting and turn signal switch) 1ST or OFF ON
      Except for 1ST or OFF OFF

      Is the item status normal? 

      YES: GO TO 3.

      NO: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

  3. DAYTIME LIGHT RELAY CIRCUIT INSPECTION

    Check the daytime light relay circuit. Refer to "DIAGNOSIS PROCEDURE ".

    Is the daytime light relay circuit normal? 

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

    NO: Repair or replace the malfunctioning part.