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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 943 (Lighting System) >> Turn Signal And Hazard Warning Lamps >> Hazard Warning Lamp Does Not Operate But Turn Signal Lamps Operate

Hazard Warning Lamp Does Not Operate But Turn Signal Lamps Operate

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK BULB 

    Make sure bulb standard of each turn signal lamp is correct. Refer to "EXTERIOR LAMP ".

    OK or NG 

    OK: GO TO 2.

    NG: Replace turn signal lamp bulb. Refer to "FRONT TURN SIGNAL LAMP " for front turn signal bulb. Refer to "BULB REPLACEMENT " for rear turn signal bulb.

  2. CHECK HAZARD SWITCH INPUT SIGNAL 

    With CONSULT-III

    Select "BCM" on CONSULT-III. With "FLASHER" data monitor, make sure "HAZARD SW" turns ON-OFF linked with operation of hazard switch.

    When hazard switch is in ON position: HAZARD SW ON 

    Without CONSULT-III

    Check voltage between BCM harness connector M18 terminal 29 and ground.

    HAZARD SWITCH INPUT SIGNAL

    BCM (-) Condition Voltage (Approx.)
    (+)
    Connector Terminal
    M18 29 Ground Hazard switch is ON 0V
    Hazard switch is OFF 5V
    Fig 1: Checking Voltage Between BCM Connector M18 Terminal 29 And Ground
    G04908596Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Replace BCM. Refer to "BCM ".

    NG: GO TO 3.

  3. CHECK HAZARD SWITCH CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect BCM connector and hazard switch connector.
    3. Check continuity between BCM harness connector M18 terminal 29 and hazard switch harness connector M202 terminal 2.

      29 - 2: Continuity should exist. 

    Fig 2: Check Continuity Between Connector M18 Terminal 29 And Connector M55 Terminal 2
    G04896449Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 4.

    NG: Repair harness or connector.

  4. CHECK GROUND 

    Check continuity between hazard switch harness connector M202 terminal 1 and ground.

    1 - Ground: Continuity should exist. 

    Fig 3: Checking Continuity Between Hazard Switch Connector M55 Terminal 1 And Ground
    G04908598Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 5.

    NG: Repair harness or connector.

  5. CHECK HAZARD SWITCH 
    1. Disconnect hazard switch connector.
    2. Check continuity of hazard switch.
      HAZARD SWITCH

      Hazard switch Condition Continuity
      Terminal
      1 2 Hazard switch is pressed Yes
      Hazard switch is released No
      Fig 4: Checking Continuity Of Hazard Switch
      G04908599Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Replace BCM if hazard warning lamps do not work after setting the connector again. Refer to "BCM ".

    NG: Replace hazard switch. Refer to "REMOVAL AND INSTALLATION ".