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Inspection Procedure

  1. READ VALUE OF TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Following the display on the tester, select "Data List".

      Smart Key (Certification ECU): 

      TESTER DISPLAY REFERENCE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D Touch Sensor Status of touch sensor front LH/ ON or OFF ON: Touch sensor is touched
      OFF: Touch sensor is not touched      		 -
      P Touch Sensor Status of touch sensor front RH/ ON or OFF ON: Touch sensor is touched
      OFF: Touch sensor is not touched      		 -

      OK: 

      "ON" (screen is touched) or "OFF" (screen is not touched) appears on the tester screen. 

      OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

      NG: Go to Next Step 

  2. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - ELECTRICAL KEY OSCILLATOR) 
    1. Disconnect the P33 ECU connector.
    2. Disconnect the oscillator connectors.

      Standard resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection (Symbols) Condition Specified Condition
      P33-5 (SEL1) - o2-4 (SEL) Always Below 1 Ω
      P33-22 (SEN1) - o2-6 (SENS) Always Below 1 Ω
      P33-6 (SEL2) - n2-4 (SEL) Always Below 1 Ω
      P33-23 (SEN2) - n2-6 (SENS) Always Below 1 Ω
      P33-5 (SEL1) - Body ground Always 10 kΩ or higher
      P33-22 (SEN1) - Body ground Always 10 kΩ or higher
      P33-6 (SEL2) - Body ground Always 10 kΩ or higher
      P33-23 (SEN2) - Body ground Always 10 kΩ or higher
      Fig 1: Identifying Certification ECU And Electrical Key Oscillator Connectors
      G05828035Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to Next Step 

  3. CHECK AND REPLACE ELECTRICAL KEY OSCILLATOR (CHECK OPERATION OF OSCILLATOR) 
    1. Replace the door oscillator.
    2. Check that the entry UNLOCK function operates normally.

      OK: 

      Entry UNLOCK function operates normally. 

      NG: END (ELECTRICAL KEY OSCILLATOR IS DEFECTIVE) 

      OK: Go to Next Step 

  4. INSPECT CERTIFICATION ECU 
    1. Reconnect the ECU and the oscillator connectors.
    2. Connect the Techstream to the DLC3.
    3. Turn the engine switch on (IG).
    4. Measure the voltage according to the value (s) in the table below.

      Standard voltage 

      STANDARD VOLTAGE SPECIFICATION

      Symbols (Tester Connection) Condition Specified Condition
      SEL1 (P33-5) - Body ground Move the key more than 5 m (16.4 ft) away from the front door LH 10 to 14 V
      SEL1 (P33-5) - Body ground Bring it to the outside handle Below 1V
      SEL2 (P33-6) - Body ground Move the key more than S m (16.4 ft) away from the front door RH 10 to 14 V
      SEL2 (P33-6) - Body ground Bring it to the outside handle Below 1V
      SEN1 (P33-22) - Body ground Front door LH outside handle is not held 10 to 14 V
      SEN1 (P33-22) - Body ground Front door LH outside handle is held Below 1V
      SEN2 (P33-23) - Body ground Front door RH outside handle is not held 10 to 14 V
      SEN2 (P33-23) - Body ground Front door RH outside handle is held Below 1V
      Fig 2: Identifying P33 Certification ECU Connector
      G05828036Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPLACE CERTIFICATION ECU 

      OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

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