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Home >> Scion >> 2006 >> tC Automatic >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door Lock >> Power Door Lock Control System >> All Doors cannot be Locked / Unlocked Simultaneously >> Inspection Procedure

Inspection Procedure

  1. CHECK ALL DOOR LOCK/UNLOCK OPERATION 
    1. All doors can be simultaneously locked/unlocked using one of the following:
      • Pressing the driver side door control switch
      • Pressing the passenger side door control switch
      • Turning the driver door key cylinder with the key
      • Turning the passenger door key cylinder with the key
    2. Proceed to the next step according to the symptom if all the doors cannot be locked/unlocked at once.
      MALFUNCTIONING PART - PROCEED TO

      Malfunctioning Part Proceed to
      Cannot lock/unlock using driver side door control switch A
      Cannot lock/unlock using passenger side door control switch B
      Cannot lock/2-step unlock using driver door key cylinder C
      Cannot lock/unlock using passenger door key cylinder D
      All functions do not operate E

    B : Go to step   5 

    C : Go to step   8 

    D : Go to step   12 

    E : Go to step   16 

    A : Go to next step 

  2. INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (DOOR CONTROL SWITCH) 
    1. Measure the resistance of the door control switch.

      Standard resistance 

      TESTER CONNECTION - SPECIFIED CONDITION (RESISTANCE)

      Tester Connection Switch Condition Specified Condition
      2 - 4 Lock Below 1 Ω
      2 - 4 OFF 10 kΩ or higher
      2 - 14 OFF 10 kΩ or higher
      2 - 14 Unlock Below 1 Ω
      Fig 1: Inspecting Power Window Regulator Master Switch Assembly (Door Control Switch)
      G04224249Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY 

    OK : GO TO NEXT STEP 

  3. CHECK WIRE HARNESS (POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND) 
    1. Disconnect the P9 switch connector.
    2. Disconnect the 1H junction block connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TESTER CONNECTION - SPECIFIED CONDITION (RESISTANCE)

      Tester Connection Specified Condition
      P9-4 (L) - 1H-13 (L1) Below 1 Ω
      P9-14 (UL) - 1H-14 (UL1) Below 1 Ω
      P9-2 (E) - Body ground Below 1 Ω
      Fig 2: Identifying Power Window Regulator Master And Instrument Panel Junction Block Assembly Connector Terminals
      G04224250Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK : GO TO NEXT STEP 

  4. CHECK OPERATION OF INTEGRATION RELAY 
    1. After replacing the integration relay with a normally functioning relay, check that the power door lock operates normally.

      OK: Power door lock operates normally. 

    NG : REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

    OK : NORMAL (INTEGRATION RELAY DEFECTIVE) 

  5. INSPECT DOOR CONTROL SWITCH ASSEMBLY (PASSENGER SIDE) 
    1. Measure the resistance of the switch.

      Standard resistance 

      TESTER CONNECTION - SPECIFIED CONDITION (RESISTANCE)

      Tester Connection Switch Condition Specified Condition
      2 - 3 Lock Below 1 Ω
      1 - 2 Unlock Below 1 Ω
      Fig 3: Inspecting Door Control Switch Assembly (Passenger Side)
      G04224251Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPLACE DOOR CONTROL SWITCH ASSEMBLY 

    OK : GO TO NEXT STEP 

  6. CHECK WIRE HARNESS (DOOR CONTROL SWITCH ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (INTEGRATION RELAY) AND BODY GROUND) 
    1. Disconnect the D13 switch connector.
    2. Disconnect the 1H junction block connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TESTER CONNECTION - SPECIFIED CONDITION (RESISTANCE)

      Tester Connection Specified Condition
      D13-3 (L) - 1H-4 (L1) Below 1 Ω
      D13-1 (UL) - 1H-5 (UL1) Below 1 Ω
      D13-2 (E) - Body ground Below 1 Ω
      Fig 4: Identifying Door Lock Switch (Passenger Side) And Instrument Panel Junction Block Assembly Connector Terminals
      G04224252Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK : GO TO NEXT STEP 

  7. CHECK OPERATION OF INTEGRATION RELAY 
    1. After replacing the integration relay with a normally functioning relay, check that the power door lock operates normally.

      OK: Power door lock operates normally. 

    NG : REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

    OK : NORMAL (INTEGRATION RELAY DEFECTIVE) 

  8. INSPECT FRONT DOOR LOCK ASSEMBLY LH (DOOR LOCK MOTOR) 
    1. Apply battery voltage to the door lock and check operation of the door lock motor.

      OK 

      MEASUREMENT AND SPECIFIED CONDITIONS

      Measurement Condition Specified Condition
      Battery positive (+) --> Terminal 4
      Battery negative (-) --> Terminal 1      		 Lock
      Battery positive (+) --> Terminal 1
      Battery negative (-) --> Terminal 4      		 Unlock
      Fig 5: Inspecting Front Door Lock Assembly LH (Door Lock Motor)
      G04224253Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPLACE FRONT DOOR LOCK ASSEMBLY LH 

    OK : GO TO NEXT STEP 

  9. INSPECT FRONT DOOR LOCK ASSEMBLY LH (DOOR LOCK AND UNLOCK SWITCH AND LOCK DETECTION SWITCH) 
    1. Measure the resistance of the door lock and unlock switch and lock detection switch.

      Standard resistance: Door lock and unlock switch 

      TESTER CONNECTION - SPECIFIED CONDITION (DOOR LOCK AND UNLOCK SWITCH)

      Tester Connection Door lock Condition Specified Condition
      7 - 9 Lock Below 1 Ω
      7 - 9 OFF 10 kΩ or higher
      7 - 10 OFF 10 kΩ or higher
      7 - 10 Unlock Below 1 Ω

      Detection switch 

      TESTER CONNECTION - SPECIFIED CONDITION (DETECTION SWITCH)

      Tester Connection Door Lock Condition Specified Condition
      7 - 8 Lock 10 kΩ or higher
      7 - 8 Unlock Below 1 Ω
      Fig 6: Inspecting Front Door Lock Assembly LH (Door Lock And Unlock Switch And Lock Detection Switch)
      G04224254Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPLACE FRONT DOOR LOCK ASSEMBLY 

    OK : GO TO NEXT STEP 

  10. CHECK WIRE HARNESS (FRONT DOOR LOCK ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (INTEGRATION RELAY) AND BODY GROUND) 
    1. Disconnect the D11 lock connector.
    2. Disconnect the I6 relay connector.
    3. Disconnect the 1H junction block connector.
    4. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TESTER CONNECTION - SPECIFIED CONDITION (RESISTANCE)

      Tester Connection Specified Condition
      D11-4 - 1H-8 (ACT+) Below 1 Ω
      D11-1 - I6-2 (ACTD) Below 1 Ω
      D11-9 - 1H-16 (L2) Below 1 Ω
      D11-10 - I6-18 (UL3) Below 1 Ω
      D11-8 - I6-20 (LSWD) Below 1 Ω
      D11-7 - Body ground Below 1 Ω
      Fig 7: Identifying Front Door Lock LH, Integration Relay And Instrument Panel Junction Block Assembly Connector Terminals
      G04224255Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK : GO TO NEXT STEP 

  11. CHECK OPERATION INTEGRATION RELAY 
    1. After replacing the integration relay with a normally functioning relay, check that the power door lock operates normally.

      OK: Power door lock operates normally. 

    NG : REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

    OK : NORMAL (INTEGRATION RELAY DEFECTIVE) 

  12. INSPECT FRONT DOOR LOCK ASSEMBLY RH (DOOR LOCK MOTOR) 
    1. Apply battery voltage to the door lock and check operation of the door lock motor.

      OK 

      MEASUREMENT AND SPECIFIED CONDITIONS

      Measurement Condition Specified Condition
      Battery positive (+) --> Terminal 4
      Battery negative (-) --> Terminal 1      		 Lock
      Battery positive (+) --> Terminal 1
      Battery negative (-) --> Terminal 4      		 Unlock
      Fig 8: Inspecting Front Door Lock Assembly RH (Door Lock Motor)
      G04224256Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPLACE FRONT DOOR LOCK ASSEMBLY RH 

    OK : GO TO NEXT STEP 

  13. INSPECT FRONT DOOR LOCK ASSEMBLY RH (DOOR LOCK AND UNLOCK SWITCH) 
    1. Measure the resistance of the door lock and unlock switch.

      Standard resistance 

      TESTER CONNECTION - SPECIFIED CONDITION (RESISTANCE)

      Tester Connection Switch Condition Specified Condition
      8 - 6 Lock Below 1 Ω
      8 - 6 OFF 10 kΩ or higher
      8 - 5 OFF 10 kΩ or higher
      8 - 5 Unlock Below 1 Ω
      Fig 9: Inspecting Front Door Lock Assembly RH (Door Lock And Unlock Switch)
      G04224257Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPLACE FRONT DOOR LOCK ASSEMBLY RH 

    OK : GO TO NEXT STEP 

  14. CHECK WIRE HARNESS (FRONT DOOR LOCK ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (INTEGRATION RELAY) AND BODY GROUND) 
    1. Disconnect the D12 lock connector.
    2. Disconnect the 1H junction block connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TESTER CONNECTION - SPECIFIED CONDITION (RESISTANCE)

      Tester Connection Specified Condition
      D12-4 - 1H-17 (ACT+) Below 1 Ω
      D12-1 - 1H-9 (ACT-) Below 1 Ω
      D12-6 - 1H-7 (L2) Below 1 Ω
      D12-5 - 1H-6 (UL2) Below 1 Ω
      D12-8 - Body ground Below 1 Ω
      Fig 10: Identifying Front Door Lock RH, Instrument Panel Junction Block Assembly Connector Terminals
      G04224258Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK : GO TO NEXT STEP 

  15. CHECK OPERATION OF INTEGRATION RELAY 
    1. After replacing the integration relay with a normally functioning relay, check that the power door lock operates normally.

      OK: Power door lock operates normally. 

    NG : REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

    OK : NORMAL (INTEGRATION RELAY DEFECTIVE) 

  16. INSPECT FUSE (ECU-B, DOOR, DCC) 
    1. Remove the DOOR fuse from the instrument panel junction block.
    2. Remove the ECU-B and DCC fuses from the engine room relay block.
    3. Measure the resistance of the fuses.

      Standard resistance: Below 1 Ω 

    NG : REPLACE FUSE 

    OK : GO TO NEXT STEP 

  17. CHECK WIRE HARNESS (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (INTEGRATION RELAY) - BATTERY AND BODY GROUND) 
    1. Disconnect the 1B, 1G and 1E junction block connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.

      Standard voltage 

      TESTER CONNECTION - SPECIFIED CONDITION (VOLTAGE)

      Tester Connection Specified Condition
      1B-30 (ECUB) - Body ground 10 to 14 V
      1G-1 (ALTB) - Body ground 10 to 14 V

      Standard resistance 

      TESTER CONNECTION - SPECIFIED CONDITION (RESISTANCE)

      Tester Connection Specified Condition
      1E-17 (GND) - Body ground Below 1 Ω
      Fig 11: Identifying Instrument Panel Junction Block Assembly Connector Terminals
      G04224259Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK : GO TO NEXT STEP 

  18. CHECK OPERATION OF INTEGRATION RELAY 
    1. After replacing the integration relay with a normally functioning relay, check that the power door lock operates normally.

      OK: Power door lock operates normally. 

    NG : REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

    OK : NORMAL (INTEGRATION RELAY DEFECTIVE) 

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