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Home >> Toyota >> 2005 >> Prius >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Smart Key Entry System (Keyless Entry) (Diagnostics) >> Smart Unlock Function Does Not Operate On Driver Side Door >> Inspection Procedure
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Inspection Procedure

  1. CHECK MANUAL DOOR UNLOCK OPERATION 
    1. Check that the manual door unlock function operates normally.

      OK: Manual door unlock function operates normally. 

    1. NG: Go to POWER DOOR LOCK CONTROL SYSTEM (See  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
    2. OK: GO TO NEXT STEP 
  2. CHECK DOOR ELECTRICAL KEY OSCILLATOR LH 
    1. Measure the voltage between the terminals of the connector when the smart key is operated.
      Fig 1: Identifying Door Electrical Key Oscillator Terminals LH
      G02617581Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 2: Tester Connection Specified Condition Chart
      G02617582Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: Go to STEP  7 
    2. OK: GO TO NEXT STEP 
  3. CHECK DOOR ELECTRICAL KEY OSCILLATOR LH 
    1. Measure the voltage between the terminals of the connector when the outside door handle is touched.
      Fig 3: Identifying Door Electrical Key Oscillator Terminals LH
      G02617583Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 4: Tester Connection Specified Condition Chart
      G02617584Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: Go to STEP4 
    2. OK: GO TO NEXT STEP 

      Go to STEP  5 

  4. CHECK WIRE HARNESS (DOOR ELECTRICAL KEY OSCILLATOR LH - SMART KEY ECU ASSY) 
    1. Disconnect the D16 oscillator connector.
    2. Disconnect the S11 ECU connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      D16-3 (SENS) - S11-21 (SEN1) Below 1 Ω
      D16-3 (SENS) or S11-21 (SEN1) - Body ground 10 kΩ or higher
      Fig 5: Checking Wire Harness (Door Electrical Key Oscillator LH - Smart Key ECU Assembly)
      G02617585Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: GO TO NEXT STEP 
  5. CHECK OPERATION OF DOOR ELECTRICAL KEY OSCILLATOR LH 
    1. After replacing the door electrical key oscillator on the driver's side with a new one, check that the smart unlock function operates normally.

      OK: Smart unlock function operates normally. 

    1. NG: Go to STEP6 
    2. OK: GO TO NEXT STEP 

      REPLACE DOOR ELECTRICAL KEY OSCILLATOR LH 

  6. CHECK WIRE HARNESS (DOOR ELECTRICAL KEY OSCILLATOR LH - ELECTRICAL KEY ANTENNA LH AND BODY GROUND) 
    1. Disconnect the D16 oscillator connector.
    2. Disconnect the E8 antenna connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      D16-6 (ANT1) - E8-5 (ANT1) Below 1 Ω
      D16-7 (ANT2) - E8-2 (ANT2) Below 1 Ω
      D16-5 (SGT) - E8-6 (SGT) Below 1 Ω
      D16-8 (GND) - Body ground Below 1 Ω
      D16-6 (ANT1) or E8-5 (ANT1) - Body ground 10 kΩ or higher
      D16-7 (ANT2) or E8-2 (ANT2) - Body ground 10 kΩ or higher
      D16-5 (SGT) or E8-6 (SGT) - Body ground 10 kΩ or higher
      Fig 6: Checking Wire Harness (Door Electrical Key Oscillator LH - Electrical Key Antenna LH And Body Ground)
      G02617586Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: GO TO NEXT STEP 

      REPLACE ELECTRICAL KEY ANTENNA LH 

  7. CHECK WIRE HARNESS (DOOR ELECTRICAL KEY OSCILLATOR LH - SMART KEY ECU ASSY) 
    1. Disconnect the D16 oscillator connector.
    2. Disconnect the S11 ECU connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      D16-2 (SEL) - S11-23 (SEL1) Below 1 Ω
      D16-2 (SEL) or S11-23 (SEL1) - Body ground 10 kΩ or higher
      Fig 7: Checking Wire Harness (Door Electrical Key Oscillator LH - Smart Key ECU Assembly)
      G02617587Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: GO TO NEXT STEP 

      REPLACE SMART KEY ECU ASSY 

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