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Inspection Procedure

  1. PERFORM ACTIVE TEST USING TECHSTREAM (FRONT DOOR LOCK LH) 
    1. Select the Active Test, use the Techstream to generate a control command, and then check that the door lock motor function.

      Driver Door (Front door ECU LH) 

      DRIVER DOOR (FRONT DOOR ECU LH) ACTIVE TEST REFERENCE

      Tester Display Test Part Control Range Diagnostic Note
      Door Lock Operate door lock motor Lock or Unlock -

      Result 

      RESULT CHART

      Result Proceed to
      Front door lock LH operates normally OK
      Front door lock LH does not operate normally NG

      NG:  Go to step  4

      OK: Go to next step 

  2. READ VALUE USING TECHSTREAM (DOOR LOCK POSITION SWITCH) 
    1. Use the Data List to check if the door lock position switch is functioning properly.

      Driver Door (Front door ECU LH) 

      DRIVER DOOR (FRONT DOOR ECU LH) DATA LIST REFERENCE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Lock Position SW Driver side door lock position switch signal/ON or OFF ON: Driver side door is unlocked
      OFF: Driver side door is locked      		 -

      OK: On tester screen, item changes between ON and OFF according to above chart. 

      NG:  Go to step  8

      OK: Go to next step 

  3. CHECK FRONT DOOR ECU LH (OPERATION) 
    1. Replace the front door ECU LH with a normal one (see REMOVAL ).
    2. Check that all doors can be locked and unlocked by using the master switch.

      OK: All doors can be locked and unlocked with master switch. 

      NG: REPLACE MAIN BODY ECU 

      OK: END (FRONT DOOR ECU LH IS DEFECTIVE) 

  4. INSPECT FUSE (D DOOR 1, D DOOR 2) 
    1. Remove the D DOOR 1 and D DOOR 2 fuses from the main body ECU.
    2. Measure the resistance of the fuse.

      Standard Resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      D DOOR 1 fuse Always Below 1 Ω
      D DOOR 2 fuse Always Below 1 Ω

      NG: REPLACE FUSE 

      OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (FRONT DOOR ECU LH - BATTERY) 
    1. Disconnect the N10 ECU connector.
    2. Measure the voltage according to the value (s) in the table below.

      Standard voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      N10-6 (BDR) - Body ground Always 11 to 14 V
      N10-16 (BDG1) - Body ground Always 11 to 14 V
      Fig 1: Identifying N10 ECU Connector Terminals
      G05783050Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to next step 

  6. INSPECT FRONT DOOR LOCK ASSEMBLY LH 
    Fig 2: Inspecting Front Door Lock Assembly LH - W/O Door Closer
    G04951517Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. w/o Door Closer:
      1. Apply battery voltage to the door lock motor and check operation of the door lock motor.

        OK 

        MEASUREMENT AND SPECIFIED CONDITION

        Measurement Condition Specified Condition
        Battery positive (+) → Terminal 4 (L)
        Battery negative (-) → Terminal 1 (UL)        		 Lock
        Battery positive (+) → Terminal 1 (UL)
        Battery negative (-) → Terminal 4 (L)        		 Unlock
        Fig 3: Inspecting Front Door Lock Assembly LH - W/ Door Closer
        G04951518Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. w/ Door Closer:
      1. Apply battery voltage to the door lock motor and check operation of the door lock motor.

        OK 

        MEASUREMENT AND SPECIFIED CONDITION

        Measurement Condition Specified Condition
        Battery positive (+) → Terminal N15-4 (L)
        Battery negative (-) → Terminal N15-1 (UL)        		 Lock
        Battery positive (+) → Terminal N15-1 (UL)
        Battery negative (-) → Terminal N15-4 (L)        		 Unlock

        NG: REPLACE FRONT DOOR LOCK ASSEMBLY LH  (See REMOVAL )

        OK: Go to next step 

  7. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK LH - FRONT DOOR ECU LH) 
    Fig 4: Identifying N9 Door Lock And N15 Connector Terminal
    G04951519Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the N15 door lock connector.
    2. Disconnect the N9 ECU connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      N15-1 (UL) - N9-1 (A-) Always Below 1 Ω
      N15-4 (L) - N9-2 (A+) Always Below 1 Ω
      N15-1 (UL) - Body ground Always 10 kΩ or higher
      N15-4 (L) - Body ground Always 10 kΩ or higher

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: REPLACE FRONT DOOR ECU LH  (See REMOVAL )

  8. INSPECT FRONT DOOR LOCK ASSEMBLY LH (DOOR LOCK POSITION SWITCH) 
    Fig 5: Inspecting Front Door Lock Assembly LH (Door Lock Position Switch) - W/O Door Closer
    G04951520Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. w/o Door Closer:
      1. Measure the resistance according to the value (s) in the table below.

        Standard resistance 

        RESISTANCE SPECIFICATION

        Tester Connection Switch Condition Specified Condition
        7 (E) - 8 (LSSR) Unlock Below 1 Ω
        7 (E) - 8 (LSSR) Lock 10 kΩ or higher
        Fig 6: Inspecting Front Door Lock Assembly LH (Door Lock Position Switch) - W/ Door Closer
        G04951521Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. w/ Door Closer:
      1. Measure the resistance according to the value (s) in the table below.

        Standard resistance 

        RESISTANCE SPECIFICATION

        Tester Connection Switch Condition Specified Condition
        N15-7 (E) - N15-8 (LSSR) Unlock Below 1 Ω
        N15-7 (E) - N15-8 (LSSR) Lock 10 kΩ or higher

        NG: REPLACE FRONT DOOR LOCK ASSEMBLY LH  (See REMOVAL )

        OK: Go to next step 

  9. CHECK HARNESS AND CONNECTOR (FRONT DOOR ECU LH - FRONT DOOR LOCK LH) 
    Fig 7: Identifying N9 ECU And N15 Door Lock Connector Terminals
    G04951522Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the N9 ECU connector.
    2. Disconnect the N15 door lock connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      N9-13 (LSWE) - N15-7 (E) Always Below 1 Ω
      N9-25 (LSW) - N15-8 (LSSR) Always Below 1 Ω
      N9-13 (LSWE) - Body ground Always 10 kΩ or higher
      N9-25 (LSW) - Body ground Always 10 kΩ or higher

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: REPLACE FRONT DOOR ECU LH  (See REMOVAL )

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