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Combination Meter: Inspection

  1. INSPECT SPEEDOMETER ON-VEHICLE 

    Using a speedometer tester, inspect the speedometer for allowable indication error and check the operation of the odometer.

    NOTE: Tire wear and tire over or under inflation will increase the indication error.

    If error is excessive, replace the speedometer.

    INSPECT SPEEDOMETER ON-VEHICLE

    Standard indication USA (mph) Allowable range Standard indication CANADA (km/h) Allowable range
    20 19 - 22 20 19 - 24
    40 39 - 42.5 40 39 - 43
    60 59 - 63 60 59 - 63.5
    80 79 - 83 80 79 - 84
    100 99 - 104 100 99 - 104
    120 119 - 124.5 120 119 - 124.5
        140 139 - 145
        160 159 - 166
        180 179 - 187
        200 199 - 208
  2. INSPECT VEHICLE SPEED SENSOR OPERATION 
    1. Connect the positive (+) lead from the battery to terminal 1 and negative (-) lead to terminal 2.
      2. Fig 1: Inspecting Vehicle Speed Sensor Operation
      G02819668Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the positive (+) lead from the tester to terminal 3 and the negative (-) lead to terminal 2.
    3. Rotate the shaft.
    4. Check that there is voltage change from approx. 0 V to 11 V or more between terminals 2 and 3.
    NOTE: The voltage change should be performed 4 times for every revolution of the speed sensor shaft.

    If operation is not as specified, replace the sensor.

  3. INSPECT TACHOMETER ON-VEHICLE 
    1. Connect a tune-up test tachometer, and start the engine.
      CAUTION:
      • Reversing the connection of the tachometer will damage the transistors and diodes inside.
      • When removing or installing the tachometer, be careful not to drop or subject it to heavy shocks.
    2. Compare the tester with tachometer indications.

    DC 13.5 V 25° C at (77° F) 

    INSPECT TACHOMETER ON-VEHICLE

    Standard indication Allowable range
    700 630 - 770
    1,000 900 - 1,100
    2,000 1,850 - 2,150
    3,000 2,800 - 3,200
    4,000 3,800 - 4,200
    5,000 4,800 - 5,200
    6,000 5,750 - 6,250
    7,000 6,700 - 7,300
  4. INSPECT FUEL RECEIVER GAUGE OPERATION 
    1. Disconnect the connector from the sender gauge.
    2. Turn the ignition switch ON, check that the receiver gauge needle indicates EMPTY.
      Fig 2: Checking Fuel Receiver Gauge Operation
      G02819669Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Connect terminals 2 and 3 on the wire harness side connector through a 3.4-W test bulb.
      4. Fig 3: Checking Bulb Lights Up And Receiver Gauge Needle Moves Towards Full Side
      G02819670Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Turn the ignition switch ON, check that the bulb lights up and the receiver gauge needle moves towards the full side.
    NOTE: Because of the silicon oil in the gauge, it will take a short time for needle to stabilize.

    If operation is not as specified, inspect the receiver gauge resistance.

  5. INSPECT FUEL RECEIVER GAUGE RESISTANCE 

    Measure the resistance between terminals.

    Fig 4: Identifying Connector Terminal
    G02819671Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    INSPECT FUEL RECEIVER GAUGE RESISTANCE

    Tester connection Resistance (Ω)
    A - B Approx. 126.2
    A - C Approx. 280.5
    B - C Approx. 154.3

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

  6. INSPECT FUEL SENDER GAUGE RESISTANCE 

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

    Fig 5: Measuring Resistance Between Terminals 2 And 3 For Each Float Position
    G02819672Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    INSPECT FUEL SENDER GAUGE RESISTANCE

    Float position mm (in.) Resistance (Ω)
    F: Approx. 91.1 (3.587) Approx. 3.0
    1/2: Approx. 34.2 (1.346) Approx. 31.7
    E: Approx. 30.8 (1.213) Approx. 110.0

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

  7. INSPECT FUEL LEVEL WARNING LIGHT 
    1. Disconnect the connector from the sender gauge.
    2. Connect terminals 1 and 3 on the wire harness side connector.
    3. Turn the ignition switch ON, check that the warning light lights up.
      4. Fig 6: Turning Ignition Switch ON, Checking Warning Light Lights Up
      G02819673Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  8. INSPECT FUEL LEVEL WARNING SWITCH 
    1. Apply battery positive voltage between terminals 1 and 3 through a 3.4-W test bulb, check that the bulb lights up.
      Fig 7: Applying Battery Positive Voltage Between Terminals 1 And 3 Through A 3.4-W Test Bulb
      G02819674Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: It takes a short time for the bulb to light up.
    2. Submerge the switch in fuel, check that the bulb goes out.
      Fig 8: Checking Bulb Goes Out
      G02819675Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If operation is not as specified, replace the sender gauge.

  9. INSPECT ENGINE COOLANT TEMPERATURE RECEIVER GAUGE OPERATION 
    1. Disconnect the connector from the sender gauge.
    2. Turn the ignition switch ON and check that the receiver gauge needle indicates COOL.
      Fig 9: Turning Ignition Switch ON And Checking Receiver Gauge Needle Indicates Cool
      G02819676Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Ground terminal on the wire harness side connector through a 3.4-W test bulb.
    4. Turn the ignition switch ON, and check that the bulb lights up and the receiver gauge needle moves to the hot side.
      5. Fig 10: Turning Ignition Switch ON, And Checking Bulb Lights Up
      G02819677Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If operation is as specified, replace the sender gauge. Then, recheck the system.

    If operation is not as specified, measure the receiver gauge resistance.

  10. INSPECT ENGINE COOLANT TEMPERATURE RECEIVER GAUGE RESISTANCE 

    Measure the resistance between terminals.

    Fig 11: Identifying Connector Of Engine Coolant Temperature Receiver
    G02819678Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    INSPECT ENGINE COOLANT TEMPERATURE RECEIVER GAUGE RESISTANCE

    Tester connection Resistance (Ω) (1)
    A - B Approx. 175.7
    A - C Approx. 54.0
    B - C Approx. 229.7
    (1) This circuit includes the diode.
    NOTE: Connect the test leads so that the current from the ohmmeter can flow according to the above order.

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

  11. INSPECT ENGINE COOLANT TEMPERATURE SENDER GAUGE RESISTANCE 

    Connect the wire harness as shown in Fig 12, and enter the values in the formula. Check the resistance conforms to the values in INSPECT ENGINE COOLANT TEMPERATURE SENDER GAUGE RESISTANCE .

    Fig 12: Inspecting Engine Coolant Temperature Sender Gauge Resistance
    G02819679Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    INSPECT ENGINE COOLANT TEMPERATURE SENDER GAUGE RESISTANCE

    Temperature °C (°F) Resistance (Ω)
    50 (122.0) 160 - 240
    120 (248.0) 17.1 - 21.2

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

  12. INSPECT LOW OIL PRESSURE WARNING LIGHT 
    1. Disconnect the connector from the warning switch and ground terminal on the wire harness side connector.
      2. Fig 13: Inspecting Low Oil Pressure Warning Light
      G02819680Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch ON and check that the warning light lights up.

    If the warning light does not light up, test the bulb.

  13. INSPECT LOW OIL PRESSURE SWITCH 
    1. Disconnect the connector from the switch.
    2. Check that continuity exists between terminal and ground with the engine stopped.
    3. Check that no continuity exists between terminal and ground with the engine running.
    NOTE: Oil pressure should be over 24.5 kPa (0.25 kgf/cm2 , 3.55 psi).

    If operation is not as specified, replace the switch.

    Fig 14: Checking Continuity Exists Between Terminal And Ground With Engine Running
    G02819681Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. INSPECT BRAKE SYSTEM WARNING LIGHT 
    1. Disconnect the connector from the brake fluid warning switch.
    2. Release the parking brake pedal.
    3. Connect the terminals on the wire harness side of the level warning switch connector.
      4. Fig 15: Inspecting Brake System Warning Light
      G02819682Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Start the engine, check that the warning light lights up.

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

  15. INSPECT BRAKE FLUID LEVEL WARNING SWITCH 
    1. Remove the reservoir tank cap and strainer.
    2. Disconnect the connector.
    3. Check that no continuity exists between the terminals with the switch OFF (float up).
      4. Fig 16: Inspecting Brake Fluid Level Warning Switch Connector Terminal
      G02819683Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Use siphon, etc. to take fluid out of the reservoir tank.
    5. Check that continuity exists between the terminals with the switch ON (float down).
    6. Pour the fluid back in the reservoir tank.

    If operation is not as specified, replace the switch.

  16. INSPECT PARKING BRAKE SWITCH 
    1. Check that continuity exists between the terminal and switch body with the switch ON (switch pin released).
      2. Fig 17: Checking Continuity Exists Between Terminal And Switch Body
      G02819684Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that no continuity exists between the terminal and switch body with the switch OFF (switch pin pushed in).

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

  17. INSPECT WASHER FLUID LEVEL WARNING LIGHT 
    1. Disconnect the connectors from the level warning switch and parking brake switch.
    2. Connect terminals on the wire harness side connector of the level warning switch connector.
      3. Fig 18: Inspecting Washer Fluid Level Warning Light
      G02819685Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the GAUGE fuse and turn the ignition switch ON, and check that the warning light comes on.

    If the warning light does not light up, test the bulb.

  18. INSPECT WASHER FLUID LEVEL WARNING SWITCH 
    1. Check that no continuity exists between terminals with the switch OFF (float up).
    2. Check that continuity exists between terminals with the switch ON (float down).
      3. Fig 19: Checking Continuity Exists Between Terminals With Switch
      G02819686Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If operation is not as specified, replace the switch.

  19. INSPECT OPEN DOOR WARNING LIGHT 

    Disconnect the connector from the door courtesy switch and ground terminal 1 on the wire harness side, and check that the warning light lights up.

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

    Fig 20: Inspecting Open Door Warning Light
    G02819687Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  20. INSPECT SEAT BELT WARNING LIGHT 
    1. Remove the integration relay from the instrument panel junction block.
    2. Ground terminal 2 on the integration relay with the connectors still connected.
      3. Fig 21: Inspecting Seat Belt Warning Light
      G02819688Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Turn the ignition switch ON and check that the warning light lights up.

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

  21. INSPECT BUCKLE SWITCH CONTINUITY 
    1. Check that continuity exists between the terminals on the switch side connector with the switch ON (belt fastened).
      2. Fig 22: Checking Continuity Exists Between Terminals On Switch Side Connector With Switch
      G02819689Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that no continuity exists between the terminals on the switch side connector with the switch OFF (belt unfastened).

    If operation is not as specified, replace the seat belt inner belt.

  22. INSPECT INTEGRATION RELAY OF SEAT BELT WARNING SYSTEM OPERATION 
    1. Connect the positive (+) lead from the battery to terminals 1 and 7.
      2. Fig 23: Inspecting Integration Relay Of Seat Belt Warning System Operation
      G02819690Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect terminal 7 to terminal 9 through the 3.4-W test bulb.
    3. Connect the negative (-) lead from the battery to terminal 10.
    4. Check that the bulb lights and the buzzer sounds for 4 - 8 seconds.
    5. Return to step (a) and operate the chime again.
    6. Connect the negative (-) lead from the battery to terminal 8.
      7. Fig 24: Connecting Negative Lead From Battery To Terminal
      G02819691Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Check that the buzzer stops sounding.
    NOTE: Check the buzzer stops within a period of 4 to 8 seconds.

    If operation is not as specified, replace the relay.

  23. INSPECT INTEGRATION RELAY CIRCUIT (See  INSPECTION  ) 
  24. INSPECT LIGHT CONTROL RHEOSTAT 
    1. Connect the positive (+) lead from the battery to terminal 1 and negative lead (-) to terminal 3.
      2. Fig 25: Turning Rheostat Knob And Checking Voltage Changes
      G02819692Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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.
  25. INSPECT BULB CHECK RELAY OPERATION 
    1. Connect the positive (+) lead from the battery to terminal C through a 1.4-W test bulb and the negative (-) lead to terminal B, check that the test bulb does not light up.
      Fig 26: Inspecting Bulb Check Relay Operation
      G02819693Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the positive (+) lead from the battery to terminal A and check that the test bulb lights up.

    If operation is not as specified, replace the relay.

  26. Passenger seat only: 

INSPECT SEAT BELT WARNING OCCUPANT DETECTION SENSOR CONTINUITY 

Check that continuity exists between the terminals 3 and 4 when pressing the sensing part.

Fig 27: Inspecting Seat Belt Warning Occupant Detection Sensor Continuity
G02819694Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If operation is not as specified, replace the sensor.

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