2005 Toyota PriusFACTORY OEM SERVICE PROCEDURE

Inspection Procedure

  1. CHECK SMART BACK DOOR UNLOCK FUNCTION OPERATES 
    1. Check that the smart back door unlock function operates normally.

      OK: Smart back door unlock function operates normally. 

    1. NG: OTHER PROBLEM (See  PROBLEM SYMPTOMS TABLE   ) 
    2. OK: GO TO NEXT STEP 
  2. CHECK WIRE HARNESS (LUGGAGE ELECTRICAL KEY OSCILLATOR (INNER) - BATTERY AND BODY GROUND) 
    1. Disconnect the L6 connector.
    2. Measure the resistance and voltage of the wire harness side connector.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      L6-1 (+B) - Body ground 10 to 14V
      L6-5 (GND) - Body ground Below 1 Ω
      Fig 1: Identifying Wire Harness (Luggage Electrical Key Oscillator (Inner) - Battery And Body Ground)
      G02617614Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: GO TO NEXT STEP 
  3. PERFORM ACTIVE TEST (LUGGAGE ELECTRICAL KEY OSCILLATOR (INNER)) 
    1. Connect the hand-held tester (with CAN VIM) to the DLC3.
    2. Turn the power switch from OFF to ON (IG) and press the hand-held tester main switch ON.
    3. Select the item below in the ACTIVE TEST, and then check that the oscillator (inner) operates.

      Smart key ECU: 

      ACTIVE TEST (SMART KEY ECU)

      Item Test Details Diagnostic Note
      IN BDR TRNSMTTR Back door inner transmitter ON/OFF  

      OK: ON (transmitter is in luggage room) appears on the screen. 

    1. NG: CHECK WIRE HARNESS 
    2. OK: GO TO NEXT STEP 

      REPLACE LUGGAGE ELECTRICAL KEY OSCILLATOR (INNER) 

  4. CHECK WIRE HARNESS (SMART KEY ECU ASSY - LUGGAGE ELECTRICAL KEY OSCILLATOR (INNER)) 
    1. Disconnect the S11 ECU connector.
    2. Disconnect the L6 oscillator connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      S11-38 (CLG7) - L6-3 (CLG) Below 1 Ω
      S11-38 (CLG7) or L6-3 (CLG)-Body ground 10 kΩ or higher
      Fig 2: Identifying Wire Harness (Smart Key ECU Assembly - Luggage Electrical Key Oscillator (Inner))
      G02617615Courtesy 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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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.