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Combination Meter: Inspection

  1. Inspect speedometer on-vehicle  .

    Using a speedometer tester, inspect that the speedometer reading is within the allowable, and check the operation of the odometer.

    NOTE: Tire wear and tire over or under inflation will cause the reading error.
    Fig 1: Displaying Speedometer Specifications
    G01895724Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the indicated value is out of the allowable range, replace the combination meter (See Step 11 under INSTRUMENT PANEL REMOVAL).

  2. Inspect speedometer resistance  .

    Measure the resistance between terminals with an ohmmeter at the positions shown in Fig 2 and Fig 3 .

    Fig 2: Identifying Speedometer Terminals
    G01895726Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 3: Displaying Speedometer Resistance Specifications
    G01895725Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If resistance value is not as specified, replace the combination meter (See Step 11 under INSTRUMENT PANEL REMOVAL).

  3. Inspect tachometer on-vehicle  .
    1. Connect a tune-up test tachometer, and start the engine.
      NOTE: Reversing the connection of the tachometer will damage the transistors and diodes inside.
    2. Compare the tester reading with tachometer reading.

    RPM (DC 13.5 V, 25°C (77°F)) 

    Fig 4: Displaying Tachometer Specifications
    G01895727Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the indicated value is out of the allowable range, replace the combination meter (See Step 11 under INSTRUMENT PANEL REMOVAL).

  4. Inspect tachometer resistance  .

    Measure the resistance between terminals with an ohmmeter at the positions shown in Fig 5 and Fig 6 .

    Fig 5: Identifying Tachometer Terminals
    G01895729Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 6: Displaying Tachometer Resistance Specifications
    G01895728Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If resistance value is not as specified, replace the combination meter (See Step 11 under INSTRUMENT PANEL REMOVAL).

  5. Inspect fuel receiver gauge operation  .
    Fig 7: Displaying Fuel Gauge Circuit
    G01895730Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE: Put the vehicle on a level spot.
    1. Disconnect the connector from the main fuel pump assembly.
    2. Turn the ignition switch ON, check that the receiver gauge needle indicates EMPTY.
    3. Connect terminals 2 and 3 of the wire harness side connector through a 3.4 W test bulb.
      Fig 8: Testing Fuel Receiver Gauge
      G01895731Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Turn the ignition switch ON, check that the bulb lights up and receiver gauge needle move to full side.

    If operation is not as specified, inspect the main and sub sender gauge resistance.

  6. Inspect fuel receiver gauge resistance  .

    Measure the resistance between terminals with an ohmmeter at the positions shown in Fig 9 and Fig 10 .

    Fig 9: Identifying Fuel Receiver Gauge Terminals
    G01895733Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 10: Displaying Fuel Receiver Gauge Resistance
    G01895732Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If resistance value is not as specified, replace the combination meter (See Step 11 under INSTRUMENT PANEL REMOVAL).

  7. Inspect main fuel sender gauge resistance  .
    Fig 11: Inspecting Main Fuel Sender Gauge Resistance
    G01895735Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Measure the resistance between terminals 2 and 3 for each float position.

    Fig 12: Displaying Main Fuel Sender Gauge Resistance Specifications
    G01895734Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If resistance value is not as specified, replace the sender gauge.

  8. Inspect sub fuel sender gauge resistance  .
    Fig 13: Inspecting Sub Fuel Sender Gauge Resistance
    G01895737Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Measure the resistance between terminals 1 and 2 for each float position.

    Fig 14: Displaying Sub Fuel Sender Gauge Resistance Specifications
    G01895736Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If resistance value is not as specified, replace the sender gauge.

  9. Inspect engine coolant temperature receiver gauge resistance  .

    Measure the resistance between terminals with an ohmmeter at the positions shown in Fig 15 and Fig 16 .

    Fig 15: Identifying Engine Coolant Temperature Receiver Gauge Terminals
    G01895739Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 16: Displaying Engine Coolant Temperature Receiver Gauge Resistance Specifications
    G01895738Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If resistance value is not as specified, replace the combination meter (See Step 11 under INSTRUMENT PANEL REMOVAL).

  10. Inspect low oil pressure warning light  .
    1. Disconnect the connector from the warning switch and ground terminal of the wire harness side connector.
    2. Turn the ignition switch ON, check that the warning light lights up.
      3. Fig 17: Testing Low Oil Pressure Warning Light Circuit
      G01895740Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the warning light does not light up, test the LED or inspect wire harness.

  11. Inspect low oil pressure switch continuity  .
    1. Check that continuity exists between terminal and ground with the engine stopped.
    2. Check that no continuity exists between terminal and ground with the engine running.
      3. Fig 18: Checking Low Oil Pressure Switch Continuity
      G01895741Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE: The oil pressure should be over 24.5 kPa (0.25 kgf/cm2 , 3.55 psi).

    If operation is not as specified, replace the switch.

  12. Inspect brake warning system light  .
    1. Disconnect the connector from the brake fluid warning switch.
    2. Connect terminals of the wire harness side of the level warning switch connector.
    3. Start the engine, check that the warning light lights up.
      4. Fig 19: Testing Brake Warning Light Circuit
      G01895742Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the warning light does not light up, test the LED or wire harness.

  13. Inspect brake fluid level warning switch continuity  .
    1. Remove the reservoir cap and strainer.
    2. Disconnect the connector.
    3. Check that no continuity exists between terminals with the switch OFF (float up).
    4. Use siphon, etc. to take fluid out of the reservoir.
    5. Check that continuity exists between terminals with the switch ON (float down).
    6. Pour the fluid back in the reservoir.
      7. Fig 20: Testing Brake Fluid Level Warning Switch
      G01895743Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If operation is not as specified, replace the switch.

  14. Inspect parking brake warning light  .
    1. Disconnect the connector from the parking brake switch.
    2. Ground the terminal of the wire harness side connector.
    3. Start the engine, check that the warning light lights up.
      4. Fig 21: Testing Parking Brake Warning Light Circuit
      G01895744Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the warning light does not light up, test the LED or inspect wire harness.

  15. Inspect parking brake switch continuity  .
    1. Check that continuity exists between terminal and switch body with the switch ON (switch pin released).
    2. Check that no continuity exists between terminal and switch body with the switch OFF (switch pin pushed in).
      3. Fig 22: Testing Parking Brake Switch
      G01895745Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If operation is not as specified, replace the switch or inspect ground point.

  16. Except back door: Inspect open door warning light 
    1. Disconnect the connector from the door courtesy switch.
    2. Ground the terminal of the wire harness side connector.
    3. Start the engine, check that the warning light lights up.
      4. Fig 23: Inspecting Open Door Warning Light Circuit (Except Back Door)
      G01895746Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the warning light does not light up, test the LED or inspect wire harness.

  17. Back door only: Inspect open door warning light  .
    1. Disconnect the connector from the back door courtesy switch and ground the terminal on the wire harness side connector.
    2. Start the engine, check that the warning light lights up.
      3. Fig 24: Inspecting Open Door Warning Light Circuit (Back Door)
      G01895747Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the warning light does not light up, test the LED or inspect wire harness.

  18. Driver's side: Inspect seat belt warning light  .
    1. Disconnect the connector from the buckle switch and ground the terminal on the wire harness side connector.
    2. Turn the ignition switch ON and check that the warning light lights up.
      3. Fig 25: Testing Seat Belt Warning Light Circuit
      G01895748Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the warning light does not light up, test the LED or inspect wire harness.

  19. Driver's side: Inspect buckle switch continuity  .
    1. Check that continuity exists between terminals 1 and 2 the switch side connectors with the switch ON (belt unfastened).
    2. Check that no continuity exists between terminals 1 and 2 of the switch side connectors with the switch OFF (belt fastened).
      3. Fig 26: Inspecting Driver's Side Buckle Switch
      G01895749Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If operation is not as specified, replace the switch.

  20. Passenger's side: Inspect buckle switch continuity  .
    1. Check that continuity exists between terminals 1 and 2 on the switch side connectors with the switch ON (belt unfastened).
    2. Check that no continuity exists between terminals 1 and 2 on the switch side connectors with the switch OFF (belt fastened).
      3. Fig 27: Inspecting Passenger's Side Buckle Switch
      G01895750Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If operation is not as specified, replace the switch.

  21. Passenger's seat only: Inspect seat belt warning occupant detection sensor continuity 
    Fig 28: Testing Occupant Detection Sensor
    G01895751Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Press the sensing part and check that continuity exists between terminals 1 and 2.

    If operation is not as specified, replace the seat cushion pad with sensor.

  22. Inspect light control rheostat operation  .
    1. Connect the positive (+) lead from the battery to terminal 1 and negative lead (-) to terminal 3.
    2. Connect the positive (+) lead from the voltmeter to terminal 2 and negative lead to terminal 3.
    3. Turn the rheostat knob and check that the voltage changes.
      4. Fig 29: Testing Light Control Rheostat
      G01895752Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If operation is not as specified, replace the light control rheostat.

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