Front Door Lock On-Vehicle Inspection

Body Electrical. Lexus Gs430, Gs300. Uzs190 Grs190
Door Lock. Lexus Gs430, Gs300. Uzs190 Grs190

  1. INSPECT FRONT DOOR LOCK ASSEMBLY (DRIVER SIDE) (W/ DOUBLE LOCKING SYSTEM)

  2. INSPECT FRONT DOOR LOCK ASSEMBLY (DRIVER SIDE) (W/O DOUBLE LOCKING SYSTEM)

  3. INSPECT FRONT DOOR LOCK ASSEMBLY (PASSENGER DOOR ECU) (W/ DOUBLE LOCKING SYSTEM)

  4. INSPECT FRONT DOOR LOCK ASSEMBLY (PASSENGER SIDE) (W/O DOUBLE LOCKING SYSTEM)

Front Door Lock -- On-Vehicle Inspection



1. INSPECT FRONT DOOR LOCK ASSEMBLY (DRIVER SIDE) (W/ DOUBLE LOCKING SYSTEM)



Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Front Door Lock On-Vehicle Inspection

  1. Check operation of the double door lock motor.

    1. Apply battery voltage to the door lock motor and check operation of the door lock motor.

      OK :
      LHD
      Measurement Condition
      		Specified Condition
      Battery positive (+) → Terminal 4
      Battery negative (-) → Terminal 3
      		Lock
      Battery positive (+) → Terminal 3
      Battery negative (-) → Terminal 4
      		Unlock
      RHD:
      Measurement Condition
      		Specified Condition
      Battery positive (+) → Terminal 2
      Battery negative (-) → Terminal 1
      		Lock
      Battery positive (+) → Terminal 1
      Battery negative (-) → Terminal 2
      		Unlock
      If the result is not as specified, replace the door lock motor assembly.

    2. Apply battery voltage to the door lock motor and check operation of the double door lock motor.

      OK:
      LHD
      Measurement Condition
      		Specified Condition
      Battery positive (+) → Terminal 2
      Battery negative (-) → Terminal 1
      		Set
      Battery positive (+) → Terminal 1
      Battery negative (-) → Terminal 2
      		Unset
      RHD:
      Measurement Condition
      		Specified Condition
      Battery positive (+) → Terminal 4
      Battery negative (-) → Terminal 3
      		Set
      Battery positive (+) → Terminal 3
      Battery negative (-) → Terminal 4
      		Unset
      If the result is not as specified, replace the door lock motor assembly.

    3. While the double locking system is set, check that the doors cannot be unlocked by operating the control cable.

  1. Measure the resistance of the double door lock position switch.

    Standard resistance:
    LHD
    Tester Connection
    		Switch Condition
    		Specified Condition
    5 - 6
    		Set
    		Below 1 Ω
    5 - 6
    		Unset
    		10 kΩ or higher
    RHD:
    Tester Connection
    		Switch Condition
    		Specified Condition
    9 - 10
    		Set
    		Below 1 Ω
    9 - 10
    		Unset
    		10 kΩ or higher
    If the result is not as specified, replace the door lock motor assembly.


2. INSPECT FRONT DOOR LOCK ASSEMBLY (DRIVER SIDE) (W/O DOUBLE LOCKING SYSTEM)



Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Front Door Lock On-Vehicle Inspection

  1. Apply battery voltage to the door lock motor and check operation of the door lock motor.

    OK:
    LHD
    Measurement Condition
    		Specified Condition
    Battery positive (+) → Terminal 4
    Battery negative (-) → Terminal 3
    		Lock
    Battery positive (+) → Terminal 3
    Battery negative (-) → Terminal 4
    		Unlock
    RHD:
    Measurement Condition
    		Specified Condition
    Battery positive (+) → Terminal 4
    Battery negative (-) → Terminal 1
    		Lock
    Battery positive (+) → Terminal 1
    Battery negative (-) → Terminal 4
    		Unlock
    If the result is not as specified, replace the door lock motor assembly.


  1. Measure the resistance of the door lock position switch.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    7 - 8
    		Unlock
    		Below 1 Ω
    7 - 8
    		Lock
    		10 kΩ or higher
    If the result is not as specified, replace the door lock motor assembly.


    Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Front Door Lock On-Vehicle Inspection

  1. Measure the resistance of the door lock and unlock switch.

    Standard resistance:
    LHD
    Tester Connection
    		Condition
    		Specified Condition
    7 - 9
    		Lock
    		Below 1 Ω
    7 - 10
    		Unlock
    		Below 1 Ω
    7 - 9
    		OFF
    		10 kΩ or higher
    7 - 10
    		OFF
    		10 kΩ or higher
    RHD:
    Tester Connection
    		Condition
    		Specified Condition
    6 - 8
    		Lock
    		Below 1 Ω
    5 - 8
    		Unlock
    		Below 1 Ω
    6 - 8
    		OFF
    		10 kΩ or higher
    5 - 8
    		OFF
    		10 kΩ or higher
    If the result is not as specified, replace the door lock motor assembly.


3. INSPECT FRONT DOOR LOCK ASSEMBLY (PASSENGER DOOR ECU) (W/ DOUBLE LOCKING SYSTEM)



Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Front Door Lock On-Vehicle Inspection

  1. Check operation of the double door lock motor.

    1. Apply battery voltage to the door lock motor and check operation of the door lock motor.

      OK:
      LHD
      Measurement Condition
      		Specified Condition
      Battery positive (+) → Terminal 2
      Battery negative (-) → Terminal 1
      		Lock
      Battery positive (+) → Terminal 1
      Battery negative (-) → Terminal 2
      		Unlock
      RHD:
      Measurement Condition
      		Specified Condition
      Battery positive (+) → Terminal 4
      Battery negative (-) → Terminal 3
      		Lock
      Battery positive (+) → Terminal 3
      Battery negative (-) → Terminal 4
      		Unlock
      If the result is not as specified, replace the door lock motor assembly.

    2. Apply battery voltage of the door lock motor and check operation of the double door lock motor.

      OK:
      LHD
      Measurement Condition
      		Specified Condition
      Battery positive (+) → Terminal 4
      Battery negative (-) → Terminal 3
      		Set
      Battery positive (+) → Terminal 3
      Battery negative (-) → Terminal 4
      		Unset
      RHD:
      Measurement Condition
      		Specified Condition
      Battery positive (+) → Terminal 2
      Battery negative (-) → Terminal 1
      		Set
      Battery positive (+) → Terminal 1
      Battery negative (-) → Terminal 2
      		Unset
      If the result is not as specified, replace the door lock motor assembly.

    3. While the double locking system is set, check that the doors cannot be unlocked by operating the control cable.

  1. Measure the resistance of the double door lock position switch.

    Standard resistance:
    LHD
    Tester Connection
    		Switch Condition
    		Specified Condition
    9 - 10
    		Set
    		Below 1 Ω
    9 - 10
    		Unset
    		10 kΩ or higher
    RHD:
    Tester Connection
    		Switch Condition
    		Specified Condition
    5 - 6
    		Set
    		Below 1 Ω
    5 - 6
    		Unset
    		10 kΩ or higher
    If the result is not as specified, replace the door lock motor assembly.


4. INSPECT FRONT DOOR LOCK ASSEMBLY (PASSENGER SIDE) (W/O DOUBLE LOCKING SYSTEM)



Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Front Door Lock On-Vehicle Inspection

  1. Apply battery voltage to the door lock motor and check operation of the door lock motor.

    OK:
    LHD
    Measurement Condition
    		Specified Condition
    Battery positive (+) → Terminal 4
    Battery negative (-) → Terminal 1
    		Lock
    Battery positive (+) → Terminal 1
    Battery negative (-) → Terminal 4
    		Unlock
    RHD:
    Measurement Condition
    		Specified Condition
    Battery positive (+) → Terminal 4
    Battery negative (-) → Terminal 3
    		Lock
    Battery positive (+) → Terminal 3
    Battery negative (-) → Terminal 4
    		Unlock
    If the result is not as specified, replace the door lock motor assembly.

  1. Measure the resistance of the door lock position switch.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    7 - 8
    		Unlock
    		Below 1 Ω
    7 - 8
    		Lock
    		10 kΩ or higher
    If the result is not as specified, replace the door lock motor assembly.