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Home › Lexus › 2007 › ES 350 › Repair and Diagnosis › Body & Frame › Door Locks › Door Lock › Smart Access System With Push-Button Start › Door Oscillator Circuit › Inspection Procedure

Inspection Procedure

  1. INSPECT ELECTRICAL KEY OSCILLATOR 
    1. Disconnect the oscillator connectors.
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage: 

      Front LH side 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection (Symbols) Condition Specified Condition
      a2-1 (B) - a2-7 (GND) Always 10 to 14 V

      Front RH side 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection (Symbols) Condition Specified Condition
      z2-1 (B) - z2-7 (GND) Always 10 to 14 V

      Rear LH side 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection (Symbols) Condition Specified Condition
      C2-1 (B) - c2-7 (GND) Always 10 to 14 V
      Fig 1: Inspecting Electrical Key Oscillator
      G05252751Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Rear RH side 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection (Symbols) Condition Specified Condition
      b2-1 (B) - b2-7 (GND) Always 10 to 14 V

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  2. CHECK HARNESS AND CONNECTOR (ELECTRICAL KEY OSCILLATOR - CERTIFICATION ECU) 
    1. Disconnect the E13 and E14 ECU connectors.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance: 

      Front LH side 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection (Symbols) Condition Specified Condition
      E13-33 (CLG1) - a2-10 (CLG) Always Below 1 Ω
      E13-34 (CG1B) - a2-5 (CLGB) Always Below 1 Ω
      E13-33 (CLG1) - Body ground Always 10 kΩ or higher
      E13-34 (CG1B) - Body ground Always 10 kΩ or higher

      Front RH side 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection (Symbols) Condition Specified Condition
      E13-35 (CLG2) - z2-10 (CLG) Always Below 1 Ω
      E13-36 (CG2B) - z2-5 (CLGB) Always Below 1 Ω
      E13-35 (CLG2) - Body ground Always 10 kΩ or higher
      E13-36 (CG2B) - Body ground Always 10 kΩ or higher

      Rear LH side 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection (Symbols) Condition Specified Condition
      E14-8 (CLG3) - c2-10 (CLG) Always Below 1 Ω
      E14-9 (CG3B) - c2-5 (CLGB) Always Below 1 Ω
      E14-8 (CLG3) - Body ground Always 10 kΩ or higher
      E14-9 (CG3B) - Body ground Always 10 kΩ or higher

      Rear RH side 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection (Symbols) Condition Specified Condition
      E14-10 (CLG4) - b2-10 (CLG) Always Below 1 Ω
      E14-11 (CG4B) - b2-5 (CLGB) Always Below 1 Ω
      E14-10 (CLG4) - Body ground Always 10 kΩ or higher
      E14-11 (CG4B) - Body ground Always 10 kΩ or higher
      Fig 2: Checking Harness And Connector (Electrical Key Oscillator - Certification ECU)
      G05252752Courtesy 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 LOCK/UNLOCK function operates normally.

      OK: Entry LOCK/UNLOCK function operates normally. 

    OK: END (ELECTRICAL KEY OSCILLATOR IS DEFECTIVE) 

    NG: Go to Next Step 

  4. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (CERTIFICATION ECU OUTPUT SIGNAL) 
    1. Reconnect the ECU and the oscillator connectors.
    2. Connect the intelligent tester to the DLC3.
    3. Turn the engine switch on (IG).
    4. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST.
    5. Following the display on the tester, select the "ACTIVE TEST".

      SMART ACCESS (Certification ECU): 

      ACTIVE TEST CHART

      Item Vehicle Condition/Test Details
      D TRANSMITTER Door Oscillator ON/OFF
      P TRANSMITTER Door Oscillator ON/OFF
      DR TRANSMITTER Door Oscillator ON/OFF
      PR TRANSMITTER Door Oscillator ON/OFF
    6. Measure the frequency according to the value(s) in the table below.
      Fig 3: Identifying Certification ECU Connector Terminals
      G05252753Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Front LH side 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection (Symbols) Condition Specified Condition
      E13-33 (CLG1) - E13-34 (CG1B) During ACTIVE TEST Frequency is generated (higher than 0 Hz)

      Front RH side 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection (Symbols) Condition Specified Condition
      E13-35 (CLG2) - E13-36 (CG2B) During ACTIVE TEST Frequency is generated (higher than 0 Hz)

      Rear LH side 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection (Symbols) Condition Specified Condition
      E14-8 (CLG3) - E14-9 (CG3B) During ACTIVE TEST Frequency is generated (higher than 0 Hz)

      Rear RH side 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection (Symbols) Condition Specified Condition
      E14-10 (CLG4) - E14-11 (CG4B) During ACTIVE TEST Frequency is generated (higher than 0 Hz)

    NG: REPLACE CERTIFICATION ECU 

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

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