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LDW Switch Circuit Inspection

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2005 Infiniti FX45, 2005 Infiniti FX35, 2004 Infiniti FX45, 2004 Infiniti FX35, and 2003 Infiniti FX45. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK LDW SYSTEM ON INDICATOR OPERATION 

    Check LDW system ON indicator operation when LDW switch is ON/OFF.

    OK or NG 

    1. OK: LDW system ON indicator is OK. Return to "SYMPTOM CHART ".
    2. NG: GO TO 2.
  2. CHECK LDW SWITCH SIGNAL INPUT 

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

    1. 9 (G) - Ground 
    2. When LDW switch is pushed: Approx. 0 V 
    3. When LDW switch is released: Approx. 5 V 

    OK or NG 

    1. OK: GO TO  6.
    2. NG: GO TO 3.
    Fig 1: Checking Voltage Between LDW Camera Unit Harness Connector R9 Terminal 9 And Ground
    G02359581Courtesy 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 (B) and ground.
      1. 6 (B) - Ground: Continuity should exist. 

    OK or NG 

    1. OK: GO TO 4.
    2. NG: Repair harness or connector.
    Fig 2: Checking Continuity Between LDW Switch Connector M96 Terminal 6 And Ground
    G02359582Courtesy 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 (G) and LDW switch harness connector M96 terminal 7 (G).
      1. 9 (G) - 7 (G): Continuity should exist. 
    3. Check continuity between LDW camera unit harness connector R9 terminal 9 (G) and ground.
      1. 9 (G) - Ground: Continuity should not exist. 

    OK or NG 

    1. OK: GO TO 5.
    2. NG: Repair harness or connector.
    Fig 3: Checking Continuity Between LDW Camera Unit Harness Connector R9 Terminal 9 And Ground
    G02359583Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK LDW SWITCH 

    Check LDW switch.

    1. 6-7 
    2. When LDW switch is pushed: Continuity should exist. 
    3. When LDW switch is released: Continuity should not exist. 

    OK or NG 

    1. OK: Replace LDW camera unit.
    2. NG: Replace LDW switch.
    Fig 4: Checking Continuity Between LDW Switch Terminals
    G02359584Courtesy of NISSAN MOTOR CO., U.S.A.
  6. CHECK LDW SYSTEM ON INDICATOR OPERATION 

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

    1. "SYSTEM ON LAMP DRIVE" 
    2. Touch "ON": LDW system ON indicator illuminates. 
    3. Touch "OFF": LDW system ON indicator turns OFF. 
    NOTE: Perform "SYSTEM ON LAMP DRIVE " when LDW system ON indicator turns OFF.

    OK or NG 

    1. OK: Replace LDW camera unit.
    2. NG: GO TO 7.
    Fig 5: CONSULT-II Diagnosis Function Display
    G02359585Courtesy 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 (G/R) and ground.
      1. 3 (G/R) - Ground: Battery voltage 

    OK or NG 

    1. OK: GO TO 8.
    2. NG: Check harness between fuse and LDW switch.
    Fig 6: Checking Voltage Between LDW Switch Harness Connector M96 Terminal 3 And Ground
    G02359586Courtesy 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 (Y) and LDW switch harness connector M96 terminal 2 (Y).
      1. 4 (Y) - 2 (Y): Continuity should exist. 
    3. Check continuity between LDW camera unit harness connector R9 terminal 4 (Y) and ground.
      1. 4 (Y) - Ground: Continuity should not exist. 

    OK or NG 

    1. OK: GO TO 9.
    2. NG: Repair harness or connector.
    Fig 7: Checking Continuity Between LDW Camera Unit Harness Connector R9 Terminal 4 And Ground
    G02359587Courtesy of NISSAN MOTOR CO., U.S.A.
  9. CHECK LDW SYSTEM ON INDICATOR 
    1. Connect LDW switch connector.
    2. Turn ignition switch ON.
    3. Ground LDW switch harness connector M96 terminal 2 (Y).
      1. 2 (Y) - Ground: LDW system ON indicator should illuminate. 

    OK or NG 

    1. OK: Replace LDW camera unit.
    2. NG: Replace LDW switch.
    Fig 8: Identifying Ground LDW Switch Harness Connector M96 Terminal 2
    G02359588Courtesy of NISSAN MOTOR CO., U.S.A.
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