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Home >> Scion >> 2008 >> xD Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter >> Meter / Gauge System >> Warning Buzzer does not Sound >> Inspection Procedure

Inspection Procedure

  1. CHECK BUZZERS (SEAT BELT, TAILLIGHT REMINDER, PARKING BRAKE) 
    1. Check that the seat belt, taillight reminder and parking brake warning buzzers sound.

      Result 

      RESULT DESCRIPTION

      Result Proceed to
      Seat belt warning buzzer does not sound (where equipped with seat belt warning system) A
      Taillight reminder warning buzzer does not sound (Meter illuminations normal) B
      Parking brake warning buzzer does not sound C
      No warning buzzers sound D

      HINT:

      • Seat belt warning buzzer on: Ignition switch is on, driver or front passenger seat belt is unfastened, and vehicle speed is 20 km/h (12.4 mph) or more.
      • Taillight reminder warning buzzer on: Ignition switch is off, taillight relay switch is on, and driver side door is open.
      • Parking brake warning buzzer on: Ignition switch is on, parking brake is operating, and vehicle speed is 5 km/h (3.1 mph) or more.

    B:  Go to step  6

    C:  Go to step  12

    D : REPLACE COMBINATION METER ASSEMBLY  (See REMOVAL  )

    A: Go to Next Step 

  2. CONFIRM DTC OUTPUT (CAN COMMUNICATION SYSTEM) 
    1. Connect a Techstream to the DLC3.
    2. Turn the ignition switch on and turn the tester on.
    3. Check for DTCs and note any codes that are output (See DTC CHECK / CLEAR  ).
    4. Clear the DTC (See DTC CHECK / CLEAR  ).
    5. Recheck for DTCs (See DTC CHECK / CLEAR  ).

      Result 

      RESULT DESCRIPTION

      Result Proceed to
      No CAN communication system DTCs are output A
      CAN communication system DTCs are output B

    B: Go to DIAGNOSTIC TROUBLE CODE CHART  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    A: Go to Next Step 

  3. CONFIRM DTC OUTPUT (BRAKE CONTROL SYSTEM) 
    1. Connect a Techstream to the DLC3.
    2. Turn the ignition switch on and turn the tester on.
    3. Check for DTCs and note any codes that are output (See DTC CHECK / CLEAR  ).
    4. Clear the DTC (See DTC CHECK / CLEAR  ).
    5. Recheck for DTCs (See DTC CHECK / CLEAR  ).

      Result 

      RESULT DESCRIPTION

      Result Proceed to
      No brake control DTCs are output A
      Brake control system DTCs are output (Vehicle with ABS) B
      Brake control system DTCs are output (Vehicle with VSC) C

    B: Go to DIAGNOSTIC TROUBLE CODE CHART  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    C: Go to DIAGNOSTIC TROUBLE CODE CHART  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    A: Go to Next Step 

  4. CONFIRM DTC OUTPUT (SUPPLEMENTAL RESTRAINT SYSTEM) 
    1. Connect a Techstream to the DLC3.
    2. Turn the ignition switch on and turn the tester on.
    3. Check for DTCs and note any codes that are output (See DTC CHECK / CLEAR  ).
    4. Clear the DTC (See DTC CHECK / CLEAR  ).
    5. Recheck for DTCs (See DTC CHECK / CLEAR  ).

      Result 

      RESULT DESCRIPTION

      Result Proceed to
      No SRS DTCs are output A
      SRS DTCs are output B

    B: Go to DIAGNOSTIC TROUBLE CODE CHART  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    A: Go to Next Step 

  5. CONFIRM DTC OUTPUT (OCCUPANT CLASSIFICATION SYSTEM) 
    1. Connect a Techstream to the DLC3.
    2. Turn the ignition switch on and turn the tester on.
    3. Check for DTCs and note any codes that are output (See DTC CHECK / CLEAR  ).
    4. Clear the DTC (See DTC CHECK / CLEAR  ).
    5. Recheck for DTCs (See DTC CHECK / CLEAR  ).

      Result 

      RESULT DESCRIPTION

      Result Proceed to
      No occupant classification system DTCs are output A
      Occupant classification system DTCs are output B

    B: Go to DIAGNOSTIC TROUBLE CODE CHART  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    A : REPLACE COMBINATION METER ASSEMBLY  (See REMOVAL  )

  6. CONFIRM DTC OUTPUT (CAN COMMUNICATION SYSTEM) 
    1. Connect a Techstream to the DLC3.
    2. Turn the ignition switch on and turn the tester on.
    3. Check for DTCs and note any codes that are output (See DTC CHECK / CLEAR  ).
    4. Clear the DTC (See DTC CHECK / CLEAR  ).
    5. Recheck for DTCs (See DTC CHECK / CLEAR  ).

      Result 

      RESULT DESCRIPTION

      Result Proceed to
      No CAN communication system DTCs are output A
      CAN communication system DTCs are output B

    B: Go to DIAGNOSTIC TROUBLE CODE CHART  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    A: Go to Next Step 

  7. READ VALUE USING TECHSTREAM (FRONT DOOR COURTESY LIGHT SWITCH (DRIVER SIDE)) 
    1. Connect a Techstream to the DLC3.
    2. Turn the ignition switch on and turn the tester on.
    3. Operate the Techstream according to the display and select "Data List" (See DATA LIST / ACTIVE TEST  ).

      Body Electrical / Main Body / Data List: 

      BODY ELECTRICAL / MAIN BODY / DATA LIST

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

    NG:  Go to step  10

    OK: Go to Next Step 

  8. INSPECT COMBINATION METER ASSEMBLY 
    1. Disconnect the F2 combination meter assembly connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      STANDARD VOLTAGE SPECIFICATIONS

      Tester Connection Switch Condition Specified Condition
      F2-7 (ILL+) - Body ground Headlight dimmer switch Tail or Head position 11 to 14 V
    3. Reconnect the combination meter assembly connector.

    NG: Go to step 9 

    Fig 1: Identifying F2 Combination Meter Assembly Connector Terminals
    G05402870Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK : REPLACE COMBINATION METER ASSEMBLY  (See REMOVAL  )

  9. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - MAIN BODY ECU) 
    1. Disconnect the F2 combination meter assembly connector.
    2. Disconnect the 4Q main body ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      F2-7 (ILL+) - 4Q-2 Always Below 1 Ω
      F2-7 (ILL+) or 4Q-2-Body ground Always 10 kΩ or higher
    4. Reconnect the combination meter assembly connector.
    5. Reconnect the main body ECU connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 2: Identifying 4Q Main Body ECU Connector Terminals
    G05402871Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to LIGHTING SYSTEM (TAILLIGHT ILLUMINATE)  (See HOW TO PROCEED WITH TROUBLESHOOTING )

  10. INSPECT FRONT DOOR COURTESY LIGHT SWITCH (DRIVER SIDE) 
    1. Disconnect the L4 front door courtesy light switch LH connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Switch Condition Specified Condition
      L4-1 - Body ground Not pushed (ON) Below 1 Ω
      L4-1 - Body ground Pushed (OFF) 10 kΩ or higher
    3. Reconnect the front door courtesy light switch LH connector.

    NG: REPLACE FRONT DOOR COURTESY LIGHT SWITCH (DRIVER SIDE)  (See REMOVAL )

    Fig 3: Inspecting Front Door Courtesy Light Switch (Driver Side)
    G04833360Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to Next Step 

  11. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH - MAIN BODY ECU) 
    1. Disconnect the L4 front door courtesy light switch connector.
    2. Disconnect the 4A main body ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      L4-1 -4A-21 (DCTY) Always Below 1 Ω
      L4-1 or 4A-21 (DCTY - Body ground) Always 10 kΩ or higher
    4. Reconnect the front door courtesy light switch connector.
    5. Reconnect the main body ECU connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 4: Identifying L4 Front Door Courtesy Light Switch Connector Terminals
    G05402873Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK : REPLACE MAIN BODY ECU 

  12. CONFIRM DTC OUTPUT (CAN COMMUNICATION SYSTEM) 
    1. Connect a Techstream to the DLC3.
    2. Turn the ignition switch on and turn the tester on.
    3. Check for DTCs and note any codes that are output (See DTC CHECK / CLEAR  ).
    4. Clear the DTC (See DTC CHECK / CLEAR  ).
    5. Recheck for DTCs (See DTC CHECK / CLEAR  ).

      Result 

      RESULT DESCRIPTION

      Result Proceed to
      No CAN communication system DTCs are output A
      CAN communication system DTCs are output B

    B: Go to DIAGNOSTIC TROUBLE CODE CHART  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    A: Go to Next Step 

  13. CONFIRM DTC OUTPUT (BRAKE CONTROL SYSTEM) 
    1. Connect a Techstream to the DLC3.
    2. Turn the ignition switch on and turn the tester on.
    3. Check for DTCs and note any codes that are output (See DTC CHECK / CLEAR  ).
    4. Clear the DTC (See DTC CHECK / CLEAR  ).
    5. Recheck for DTCs (See DTC CHECK / CLEAR  ).

      Result 

      RESULT DESCRIPTION

      Result Proceed to
      No brake control DTCs are output A
      Brake control system DTCs are output (Vehicle with ABS) B
      Brake control system DTCs are output (Vehicle with VSC) C

    B: Go to DIAGNOSTIC TROUBLE CODE CHART  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    C: Go to DIAGNOSTIC TROUBLE CODE CHART  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    A: Go to Next Step 

  14. READ VALUE USING TECHSTREAM (PARKING BRAKE SWITCH) 
    1. Connect a Techstream to the DLC3.
    2. Turn the ignition switch on and turn the tester on.
    3. Operate the Techstream according to the display and select "Data List" (See DATA LIST / ACTIVE TEST  ).

      Body / Main body / Data List: 

      BODY / MAIN BODY / DATA LIST

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Parking Brake SW Parking brake switch signal ON / OFF ON: Parking brake lever is pulled
      OFF: Parking brake lever is lowered      		 -

    NG: Go to step 15 

    OK : REPLACE COMBINATION METER ASSEMBLY  (See REMOVAL  )

  15. INSPECT PARKING BRAKE SWITCH 
    1. Remove the parking brake switch (See REMOVAL ).
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Switch Condition Specified Condition
      1 - Body ground Parking brake switch on (Switch pin released) Below 1 Ω
      Parking brake switch off (Switch pin pushed in) 10 kΩ or higher
    3. Reinstall the parking brake switch.
      Fig 5: Inspecting Parking Brake Switch
      G05160043Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE PARKING BRAKE SWITCH  (See REMOVAL )

    OK: Go to Next Step 

  16. CHECK HARNESS AND CONNECTOR (PARKING BRAKE SWITCH - MAIN BODY ECU) 
    1. Disconnect the F23 parking brake switch connector.
    2. Disconnect the 4C main body ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      F23-1 - 4C -2 (PKB) Always Below 1 Ω
      F23-1 or 4C-2 (PKB) - Body ground Always 10 kΩ or higher
    4. Reconnect the parking brake switch connector.
    5. Reconnect the main body ECU connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 6: Identifying 4C Main Body ECU Connector Terminals
    G05402875Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK : REPLACE MAIN BODY ECU 

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