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HOMESERVICE MANUALSINFINITI2006FX35 AWDREPAIR AND DIAGNOSISELECTRICALGAUGESDRIVER INFORMATION SYSTEMLANE DEPARTURE WARNING SYSTEMLDW SWITCH CIRCUIT INSPECTION
2006 Infiniti FX35 AWD

LDW Switch Circuit Inspection

2006 Infiniti FX35 AWDSECTION LDW Switch Circuit Inspection
  1. CHECK OPERATION OF LDW SYSTEM ON INDICATOR 
    1. Turn ignition switch ON.
    2. Check LDW system ON indicator operation when LDW switch is ON/OFF.

    OK or NG 

    OK : INSPECTION END

    NG : GO TO 2.

  2. CHECK LDW SWITCH SIGNAL INPUT 

    Check voltage between LDW camera unit harness connector R9 terminal 9 and ground.

    9 - Ground 

    When LDW switch is pressed : Approx. 0 V 

    When LDW switch is released : Approx. 5 V 

    OK or NG 

    OK : GO TO  6.

    NG : GO TO 3.

    Fig 1: Identifying Voltage Between LDW Camera Unit Harness Connector R9 Terminal And Ground
    G04078601Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK LDW SWITCH GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect LDW switch connector.
    3. Check continuity between LDW switch connector M96 terminal 6 and ground.

      6 - Ground : Continuity should exist. 

    OK or NG 

    OK : GO TO 4.

    NG : Repair harness or connector.

    Fig 2: Identifying Continuity Between LDW Switch Connector M96 Terminal 6 And Ground
    G04078602Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK LDW SWITCH SIGNAL INPUT CIRCUIT 
    1. Disconnect LDW camera unit connector.
    2. Check continuity between LDW camera unit harness connector R9 terminal 9 and LDW switch harness connector M96 terminal 7.

      9 - 7 : Continuity should exist. 

    3. Check continuity between LDW camera unit harness connector R9 terminal 9 and ground.

      9 - Ground : Continuity should not exist. 

    OK or NG 

    OK : GO TO 5.

    NG : Repair harness or connector.

    Fig 3: Identifying Continuity Between LDW Camera Unit Harness Connector R9 Terminal 9 And Ground
    G04078603Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK LDW SWITCH 

    Check LDW switch. Refer to

    OK or NG 

    OK : Replace LDW camera unit.

    NG : Replace LDW switch.

  6. CHECK OPERATION OF LDW SYSTEM ON INDICATOR 

    Check LDW system ON indicator operation "SYSTEM ON LAMP DRIVE" in "ACTIVE TEST" mode with CONSULT-II.

    "SYSTEM ON LAMP DRIVE" 

    Touch "ON" : LDW system ON indicator illuminates. 

    Touch "OFF" : LDW system ON indicator turns OFF. 

    NOTE: Perform "SYSTEM ON LAMP DRIVE" when LDW system ON indicator turns OFF.

    OK or NG 

    OK : Replace LDW camera unit.

    NG : GO TO 7.

    Fig 4: Displaying Active Test
    G04078604Courtesy of NISSAN MOTOR CO., U.S.A.
  7. CHECK LDW SYSTEM ON INDICATOR POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect LDW switch connector.
    3. Turn ignition switch ON.
    4. Check voltage between LDW switch harness connector M96 terminal 3 and ground.

      3 - Ground : Battery voltage 

    OK or NG 

    OK : GO TO 8.

    NG : Check harness between fuse and LDW switch.

    Fig 5: Identifying Voltage Between LDW Switch Harness Connector M96 Terminal 3 And Ground
    G04078605Courtesy of NISSAN MOTOR CO., U.S.A.
  8. CHECK LDW SYSTEM ON INDICATOR SIGNAL CIRCUIT 
    1. Disconnect LDW camera unit connector.
    2. Check continuity between LDW camera unit harness connector R9 terminal 4 and LDW switch harness connector M96 terminal 2.

      4 - 2 : Continuity should exist. 

    3. Check continuity between LDW camera unit harness connector R9 terminal 4 and ground.

      4 - Ground : Continuity should not exist. 

    OK or NG 

    OK : GO TO 9.

    NG : Repair harness or connector.

    Fig 6: Identifying Continuity Between LDW Camera Unit Harness Connector R9 Terminal 4 And Ground
    G04078606Courtesy of NISSAN MOTOR CO., U.S.A.
  9. CHECK LDW SYSTEM ON INDICATOR 
    1. Connect LDW switch connector.
    2. Turn ignition switch ON.
    3. Apply ground to LDW switch terminal 2.
    4. Check condition of the LDW system ON indicator.

      2 - Ground : LDW system ON indicator should illuminate. 

    OK or NG 

    OK : Replace LDW camera unit.

    NG : Replace LDW switch.

    Fig 7: Identifying LDW System On Indicator
    G04078607Courtesy of NISSAN MOTOR CO., U.S.A.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.