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Key Reminder Buzzer does not Sound: Procedure

WARNING: This page is about a different car, the 2010 Toyota FJ Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ VALUE USING TECHSTREAM (D DOOR COURTESY SW) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the tester ON.
    4. Enter the following menus: Body Electrical / Main Body / Data List.
    5. According to the display on tester, read on the "Data List".

      Main Body ECU

      Tester Display Measurement Item/Range Normal Condition
      D Door Courtesy SW Driver side door courtesy switch signal / ON or OFF ON: Driver side door is open
      OFF: Driver side door is closed

      OK

      When the driver side door is opened/closed, the display will change as shown above.

    OK → See   4 

    NG: Go to next step 

  2. INSPECT FRONT DOOR COURTESY SWITCH (DRIVER SIDE) 
    1. Remove the front door courtesy switch (driver side).
      Fig 1: Identifying Front Door Courtesy Switch (Driver Side) & Ground
      GTY206394Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance.

      Standard resistance

      Tester Connection Condition Specified Condition
      1 - Body ground Not pushed (ON) Below 1 Ω
      1 - Body ground Pushed (OFF) 10 kΩor higher
    3. Reinstall the front door courtesy switch (driver side).

    NG → REPLACE FRONT DOOR COURTESY SWITCH (DRIVER SIDE) 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY SWITCH (DRIVER SIDE) - MAIN BODY ECU) 
    1. Disconnect the J1 front door courtesy switch (driver side) connector.
      Fig 2: Identifying Front Door Courtesy Switch (Driver Side) & Main Body ECU Connectors
      GTY196982Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the E7 main body ECU connector.
    3. Measure the resistance.

      Standard resistance

      Tester Connection Specified Condition
      J1-1 - E7-23 (DCTY) Below 1 Ω
      J1-1 or E7-23 (DCTY) - Body ground 10 kΩor higher
    4. Reconnect the courtesy switch and main body ECU connectors.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  4. READ VALUE USING TECHSTREAM (KEY UNLOCK WARNING SW) 
    1. Connect a Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the tester ON.
    4. Enter the following menus: Body Electrical / Main Body / Data List.
    5. According to the display on tester, read on the "Data List".

      Main Body ECU

      Tester Display Measurement Item/Range Normal Condition
      Key Unlock Warning SW Unlock warning switch signal / ON or OFF ON: Key is in ignition key cylinder
      OFF: No key is in ignition key cylinder

      OK

      When the ignition key is operated, the display changes as shown above.

    OK → See   7 

    NG: Go to next step 

  5. INSPECT UNLOCK WARNING SWITCH ASSEMBLY 
    1. Remove the unlock warning switch assembly.
      Fig 3: Inspecting Unlock Warning Switch Assembly
      GTY195438Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance.

      Standard resistance

      Tester Connection Condition Specified Condition
      1 - 2 Not pushed 10 kΩor higher
      1 - 2 Pushed Below 1 Ω
    3. Reinstall the unlock warning switch assembly.

    NG → REPLACE UNLOCK WARNING SWITCH ASSEMBLY 

    OK: Go to next step 

  6. CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH ASSEMBLY - MAIN BODY ECU) 
    1. Disconnect the E21 unlock warning switch assembly connector.
      Fig 4: Identifying E8 Main Body ECU & E21 Unlock Warning Switch Connector Terminals
      GTY196983Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the E8 main body ECU connector.
    3. Measure the resistance.

      Standard resistance

      Tester Connection Specified Condition
      E21-1 - E8-14 (KSW) Below 1 Ω
      E21-1 or E8-14 (KSW) - Body ground 10 kΩor higher
      E21-2 - Body ground Below 1 Ω
    4. Reconnect the unlock warning switch and the main body ECU connectors.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  7. INSPECT MAIN BODY ECU 
    1. Measure the voltage.
      Fig 5: Identifying E8 Main Body ECU Connector Terminals
      GTY196985Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard voltage

      Tester Connection Condition Specified Condition
      E8-15 (KSWO) - Body ground Key is in ignition key cylinder Below 1 V
      E8-15 (KSWO) - Body ground No key is in ignition key cylinder 10 to 14 V
      E8-11 (DCY2) - Body ground Driver side door is open Below 1 V
      E8-11 (DCY2) - Body ground Driver side door is closed 10 to 14 V

    NG → REPLACE MAIN BODY ECU 

    OK: Go to next step 

  8. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - MAIN BODY ECU) 
    1. Disconnect the E8 main body ECU connector.
      Fig 6: Identifying E8 Main Body ECU & E13 Combination Meter Connector Terminals
      GTY180056Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the E13 combination meter assembly connector.
    3. Measure the resistance.

      Standard resistance

      Tester Connection Specified Condition
      E8-15 (KSWO) - E13-9 (KSW) Below 1 Ω
      E8-15 (KSWO) or E13-9 (KSW) - Body ground 10 kΩor higher
      E8-11 (DCY2) - E13-29 (DOOR) Below 1 Ω
      E8-11 (DCY2) or E13-29 (DOOR) - Body ground 10 kΩor higher
    4. Reconnect the main body ECU and combination meter assembly connectors.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → REPLACE COMBINATION METER ASSEMBLY 

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