LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2012 >> IS 250C Automatic Trans >> Repair and Diagnosis >> Electrical >> Starter >> Smart Access System With Push-Button Start (For Entry Function) (Diagnostics & Symptom Tests) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) >> Symptom Tests >> Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment >> Procedure

Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment: Procedure

  1. READ VALUE USING TECHSTREAM (LUGGAGE COMPARTMENT DOOR OPEN MODE) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Smart Access / Data List.
    5. Read the Data List according to the display on the Techstream.
      SMART ACCESS (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Trunk Open Mode Luggage compartment door open mode / ON or OFF Customization status displayed -
      RESULT

      Result Proceed to
      Entry luggage compartment door open mode is ON A
      Entry luggage compartment door open mode is OFF B

    B → See step   14 

    A: Go to next step 

  2. CHECK LUGGAGE COMPARTMENT DOOR OPENER SYSTEM (OPEN OPERATION) 
    1. When the luggage compartment door opener inner switch is operated, check that the luggage compartment door opens. Refer to OPERATION CHECK .

      OK

      Luggage compartment door opens.

    NG → See step   11 

    OK: Go to next step 

  3. READ VALUE USING TECHSTREAM (LUGGAGE COMPARTMENT DOOR OPENER SWITCH) 
    1. Enter the following menus: Body Electrical / Body No. 3 / Data List.
    2. Read the Data List according to the display on the Techstream.
      BODY NO. 3 (MAIN BODY ECU LH (COWL SIDE JUNCTION BLOCK LH))

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Luggage Push Switch Luggage compartment door opener outer switch / ON or OFF ON: Luggage compartment door opener outer switch pushed
      OFF: Luggage compartment door opener outer switch not pushed
      -

      OK

      On the Techstream screen, the display changes between ON and OFF according to the chart above.

    NG → See step   9 

    OK: Go to next step 

  4. CHECK WAVE ENVIRONMENT 
    1. Bring the key near the outside electrical key oscillator (for luggage compartment), and perform an entry luggage compartment open function check.
      Fig 1: Identifying Front Passenger Door Entry Lock Clearance
      GTY277858Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      If the key is brought within 0.2 m (0.656 ft.) of the rear bumper, communication is not possible.

      HINT: 

      • When pressing the luggage compartment door opener outer switch, hold the key about 1 m (3.28 ft.) above the ground and about 0.3 m (0.984 ft.) away from the vehicle as shown in the illustration.
      • When the key is brought near the outside electrical key oscillator (for luggage compartment), the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
      • If the operation check is normal, 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

      Entry functions operate normally.

    NG → See step   5 

    OK → AFFECTED BY WAVE INTERFERENCE 

  5. PERFORM KEY DIAGNOSTIC MODE INSPECTION 
    1. Diagnostic mode inspection (outside electrical key oscillator (for luggage compartment))
      Fig 2: Identifying Outside Electrical Key Oscillator Clearance
      GTY288895Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream on.
      4. Enter the following menus: Body Electrical / Smart Access / Utility / Communication Check (Key Diag Mode) / Overhead + Luggage (outside).
      5. When the key is held at the same height as the rear bumper upper surface aligning it with the center of the rear of the vehicle, check that the wireless door lock buzzer sounds.

        HINT: 

        • Hold the key at the same height as the rear bumper upper surface and align with the center of the rear of the vehicle (0.7 to 1.0 m (2.30 to 3.28 ft.)). Make sure that the direction of the key is as shown in the illustration.
        • If the buzzer sounds, it can be determined that the luggage compartment exterior transmitter is operating normally.

        OK

        Wireless door lock buzzer sounds.

    NG → See step   6 

    OK → See step   13 

  6. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - OUTSIDE ELECTRICAL KEY OSCILLATOR) 
    1. Disconnect the certification ECU (smart key ECU assembly) connector.
    2. Disconnect the outside electrical key oscillator (for luggage compartment) connector.
      Fig 3: Identifying P33 & P32 Connector Terminal Identification
      GTY282510Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.
      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      P33-32 (CG8B) - P32-2 (CLGB) Always Below 1 Ω
      P33-31 (CLG8) - P32-1 (CLG5) Always Below 1 Ω
      P33-32 (CG8B) - Body ground Always 10 kΩ or higher
      P33-31 (CLG8) - Body ground Always 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to Certification ECU (Smart Key ECU Assembly))
      *2 Front view of wire harness connector
      (to Outside Electrical Key Oscillator (for Luggage Compartment))

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  7. REPLACE OUTSIDE ELECTRICAL KEY OSCILLATOR (for Luggage Compartment) 
    1. Replace the outside electrical key oscillator (for luggage compartment). Refer to REMOVAL .

    NEXT: Go to next step 

  8. CHECK OUTSIDE ELECTRICAL KEY OSCILLATOR (LUGGAGE COMPARTMENT OPERATION) 
    1. Check that the entry functions operate normally. Refer to OPERATION CHECK .

      OK

      Entry functions operate normally.

    NG → See step   13 

    OK → END (OUTSIDE ELECTRICAL KEY OSCILLATOR WAS DEFECTIVE) 

  9. INSPECT LUGGAGE COMPARTMENT DOOR OPENER OUTER SWITCH 
    1. Remove the luggage compartment door opener outer switch. Refer to REMOVAL .
    2. Measure the resistance according to the value(s) in the table below.
      Fig 4: Inspecting Luggage Compartment Door Opener Outer Switch
      GTY285010Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      STANDARD RESISTANCE

      Tester Connection Switch Condition Specified Condition
      1 (E) - 2 (UL) Luggage compartment door opener outer switch not pushed 10 KΩ or higher
      1 (E) - 2 (UL) Luggage compartment door opener outer switch pushed Below 1 Ω
      TEXT IN ILLUSTRATION

      *1 Component without harness connected
      (Luggage Compartment Door Opener Outer Switch)

    NG → See step   12 

    OK: Go to next step 

  10. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU LH - OPENER SWITCH) 
    1. Disconnect the main body ECU LH (cowl side junction block LH) connector.
      Fig 5: Q3 & H5 Connector Terminal Identification
      GTY274123Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.
      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      Q3-13 (LPSW) - h5-2 (UL) Always Below 1 Ω
      h5-1 (E) - Body ground Always Below 1 Ω
      Q3-13 (LPSW) - Body ground Always 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to Main Body ECU LH (Cowl Side Junction Block LH))
      *2 Front view of wire harness connector
      (to Luggage Compartment Door Opener Outer Switch)

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → REPLACE MAIN BODY ECU LH (COWL SIDE JUNCTION BLOCK LH) 

  11. GO TO LUGGAGE COMPARTMENT DOOR OPENER SYSTEM (Proceed to Luggage Compartment Door Opener does not Operate). Refer to  Luggage Compartment Door Opener does not Operate 
  12. REPLACE LUGGAGE COMPARTMENT DOOR OPENER OUTER SWITCH. Refer to  REMOVAL 
  13. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL 
  14. PERFORM CUSTOMIZE SETTING (Proceed to Customize Parameters). Refer to  CUSTOMIZE PARAMETERS