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Home >> Toyota >> 2009 >> Sienna LE, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Door Lock) >> WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Smart Key System) >> Only Wireless Control Function is Inoperative >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2009 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK POWER DOOR LOCK OPERATION 
    1. When the door control switch on the master switch assembly is operated, check that the locked doors unlock (See OPERATION CHECK ).

      OK: 

      Locked doors unlock. 

      NG: GO TO POWER DOOR LOCK CONTROL SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

      OK: Go to next step 

  2. CHECK KEY REMINDER WARNING SYSTEM 
    1. Check that the key reminder warning buzzer operates normally.

      OK: 

      Key reminder warning buzzer operates normally. 

      NG: GO TO KEY REMINDER WARNING SYSTEM  (See SYSTEM DIAGRAM )

      OK: Go to next step 

  3. CHECK DOOR CONTROL TRANSMITTER ASSEMBLY 
    1. When another registered door control transmitter is used, check that the wireless operates normally.

      Result 

      RESULT REFERENCE

      Result Proceed to
      Wireless door LOCK/UNLOCK function operates and door control transmitter that did not operate Is electrical key transmitter A
      Wireless door LOCK/UNLOCK function does not operate B

      B: Go to step  5

      A: Go to next step 

  4. CHECK TRANSMITTER BATTERY 
    1. Inspect the battery capacity.
      1. Remove the battery from the electrical key transmitter that does not operate (See REMOVAL ). Attach a lead wire (0.6 mm (0.0236 in.) in diameter or less including wire sheath) with tape or equivalent to the negative terminal.
        NOTE: Do not wrap the lead wire around a terminal, wedge it between the terminals, or solder it. A terminal may be deformed or damaged, and the battery will not be able to be installed correctly.
    2. Carefully pull the lead wire out from the position shown in the illustration and install the previously removed transmitter battery.
      Fig 1: Identifying Transmitter Battery Lead Wire
      G06011198Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using an oscilloscope, check the transmitter battery voltage waveform.

      HINT:

      Measure the transmitter battery voltage while pressing the LOCK or UNLOCK switch on the transmitter.

      Standard Voltage 

      STANDARD VOLTAGE SPECIFICATION

      Item Content
      Tester Connection Battery positive (+) - Battery negative (-)
      Tool Setting 0.5 V/DIV., 100 ms/DIV.
      Condition Ignition switch off, all doors closed and lock or unlock switch is pressed
      Specified Condition 2.2 to 3.2 V (Refer to the waveform)

      NG: REPLACE TRANSMITTER BATTERY  (See TRANSMITTER BATTERY (W/O SMART KEY SYSTEM) )

      Fig 2: Checking Transmitter Battery Voltage
      G06011199Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: REPLACE DOOR CONTROL TRANSMITTER MODULE 

  5. CHECK WAVE ENVIRONMENT 
    1. Bring the transmitter near the door control receiver, and perform a wireless operation check.

      HINT:

      • When the transmitter is brought near the door control receiver, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
      • If the inspection result is that the problem only occurs in certain locations or times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

        OK: 

        Wireless functions operate normally. 

        NG: AFFECTED BY WAVE INTERFERENCE 

        OK: Go to next step 

  6. SWITCH TO SELF-DIAGNOSTIC MODE 
    1. Switch to self-diagnostic mode by operating the ignition key cylinder.
      1. Make sure the vehicle is in its initial condition. Then insert the key into the ignition key cylinder and remove it.
      2. Within 5 seconds after removing the key, insert the key into the ignition key cylinder (ignition switch off). Then turn the ignition switch to ON and off.
      3. Within 30 seconds after turning the ignition switch off, perform the following operation 9 times: turn the ignition switch to ON and then off.
        NOTE: If the system cannot enter self-diagnostic mode, the system returns to normal mode.

        HINT:

        • Turning the ignition switch to ON after the above operations have been completed ends self-diagnostic mode.
        • Do not lock or unlock doors during self-diagnostic mode.
    2. Check that the system has switched to self-diagnostic mode by checking the room light output pattern.
      Fig 3: Room Light Blinking Pattern
      G06011200Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Check that the system has switched to self-diagnostic mode by checking the wireless door lock buzzer output pattern.
      Fig 4: Wireless Door Lock Buzzer Blinking Pattern
      G06011192Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. CHECK SELF DIAGNOSTIC MODE 
    Fig 5: Interior Lights And Buzzer Blinking Pattern
    G06011202Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Inspect the diagnostic outputs when the door control transmitter switch is held down. The diagnostic outputs can be checked by the flash patterns of the interior lights and the buzzer patterns of the wireless door lock buzzer.

      Result 

      RESULT REFERENCE

      Result Proceed to
      Normal wave (light flash pattern and buzzer pattern) Is output A
      Unmatching recognition code Is output B
      No diagnosis outputs C

      B: Go to step 8 

      C: Go to step  9

      A: REPLACE MAIN BODY ECU 

  8. REGISTER RECOGNITION CODE 
    1. Check that the system can be switched to rewrite mode or add mode, and that a recognition code can be registered (See REGISTRATION ).

      OK: 

      Recognition code can be registered. 

      NG: Go to step  13

      OK: END  (GO TO OPERATION CHECK )

  9. CHECK DOOR CONTROL RECEIVER (RESPONSE) 
    1. Prepare the door control transmitter from another vehicle.
    2. Press and hold down the door control transmitter switch.
    3. Check that an unmatching recognition code is output.

      OK: 

      Unmatching recognition code is output. 

      NG: Go to step 10 

      OK: REPLACE DOOR CONTROL TRANSMITTER MODULE 

  10. CHECK DOOR CONTROL RECEIVER (+B, GND) 
    1. Disconnect the door control receiver.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      1 (GND) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage 

      STANDARD VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      5 (+B) - Body ground Always 11 to 14 V

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      Fig 6: Identifying Door Control Receiver Connector
      G06011196Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  11. CHECK DOOR CONTROL RECEIVER (OUTPUT) 
    1. Measure the voltage according to the value(s) in the table below.

      Standard Voltage 

      STANDARD VOLTAGE SPECIFICATION

      Tester Connection Switch Condition Specified Condition
      M12-2 (RDA) -Body ground Transmitter switch OFF → ON (No key In Ignition key cylinder, all doors closed) 6 V or higher → Below 1 V → 6 V or higher

      NG: REPLACE DOOR CONTROL RECEIVER  (See REMOVAL )

      Fig 7: Identifying M12 Door Control Receiver Connector
      G06011204Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  12. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - DOOR CONTROL RECEIVER) 
    1. Disconnect the E61 main body ECU connector and the M12 door control receiver connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      E61-16 (RDA) - M12-2 (RDA) Always Below 1 Ω
      E61-16 (RDA) - Body ground Always 10 kΩ or higher
      E61-17 (PRG) - M12-3 (PRG) Always Below 1 Ω
      E61-17 (PRG) - Body ground Always 10 kΩ or higher

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      Fig 8: Identifying E61 Main Body ECU And M12 Door Control Receiver Connectors
      G06011195Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  13. REPLACE DOOR CONTROL RECEIVER 
    1. Temporarily replace the door lock control receiver with a new or known good one (See REMOVAL ).
  14. REGISTER RECOGNITION CODE 
    1. Perform the Registration procedure (See REGISTRATION ).
  15. CHECK DOOR CONTROL RECEIVER (OPERATION) 
    1. Check that the doors can be locked and unlocked by using the transmitter LOCK and UNLOCK switches.

      OK: 

      Doors can be locked and unlocked using transmitter. 

      NG: REPLACE MAIN BODY ECU 

      OK: END (DOOR CONTROL RECEIVER IS DEFECTIVE) 

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