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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.
    SPEEDOMETER MEASURING

    USA (mph) CANADA (km/h)
    Standard Indication: Allowable Range Standard Indication: Allowable Range
    20: 18 - 24 20: 17 - 24
    40: 38 - 44 40: 38 - 46
    60: 58 - 66 60: 57.5 - 67
    80: 78 - 88 80: 77 - 88
    100: 98 - 110 100: 96 - 109
    - 120: 115 - 130
    - 140: 134 - 151.5
    - 160: 153 - 173

    If error is excessive, replace the speedometer.

  2. INSPECT VEHICLE SPEED SENSOR OPERATION 
    1. Connect the positive (+) lead from the battery to terminal 1 and negative (-) lead to terminal 2.
    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 voltage changes from approx. 0 V to 16 V or more between terminals 2 and 3.
    Fig 1: Inspecting Vehicle Speed Sensor In Voltmeter
    G02928026Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE: The voltage should change 4 times for every revolution of the speed sensor shaft.

    If operation is not as specified, replace the sensor.

  3. INSPECT SPEEDOMETER RESISTANCE 

    Measure the resistance between terminals while fixing pointer to the stopper.

    TERMINAL RESISTANCE MEASURING

    Tester Connection Resistance (Ω:)
    A - D 250
    B - C 250

    If resistance value is not as specified, replace the meter.

    Fig 2: Measuring Resistance Between Terminals
    G02928027Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT TACHOMETER 
    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.
      • When removing or installing the tachometer, be careful not to drop or subject it to heavy shocks.
    2. Compare the tester and tachometer indications.

    DC 13.5 V 20°C at (77°F) 

    TACHOMETER INDICATION

    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
  5. INSPECT TACHOMETER RESISTANCE 

    Measure the resistance between terminals with fixing pointer to the stopper.

    TACHOMETER RESISTANCE

    Tester Connection Resistance (Ω:)
    A - D 250
    B - C 250

    If resistance value is not as specified, replace the meter.

    Fig 3: Measuring Resistance Between Terminals
    G02928028Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSPECT VOLT GAUGE RESISTANCE 

    Measure the resistance between terminals with fixing pointer to the stopper.

    GAUGE RESISTANCE

    Tester Connection Resistance (Ω:)
    A - D 250
    B - C 250

    If resistance value is not as specified, replace the meter.

    Fig 4: Measuring Volt Gauge Resistance Terminals
    G02928029Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. INSPECT FUEL RECEIVER GAUGE OPERATION 
    1. Disconnect the connector from the sender gauge.
      Fig 5: Disconnecting Connector From Sender Gauge
      G02928030Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch ON, check that the receiver gauge needle indicates EMPTY.
    3. Connect terminals 2 and 3 on the wire harness side connector through a 3.4 watts test bulb.
    4. Turn the ignition switch ON, check that the bulb comes on 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.

    Fig 6: Connecting Terminals For Watts Bulb
    G02928031Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. INSPECT FUEL RECEIVER GAUGE RESISTANCE 

    Measure the resistance between terminals.

    TERMINAL RESISTANCE

    Between Terminals Resistance (Ω:)
    A - D 250
    B - C 250

    If resistance value is not as specified, replace the meter.

    Fig 7: Measuring Fuel Gauge Resistance
    G02928032Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. INSPECT FUEL SENDER GAUGE RESISTANCE 

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

    FUEL SENDER RESISTANCE

    Float Position mm (in.) Resistance (Ω:)
    F: Approx. -43.5 (1.71) +/- 2 (0.12) Approx. 3.0
    1/2: Approx. 70.8 (2.79) Approx. 32.5
    E: Approx. -178 (7.01) +/- 2 (0.12) Approx. 110

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

    Fig 8: Inspecting Fuel Sender Gauge
    G02928033Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. INSPECT FUEL LEVEL WARNING LIGHT 
    1. Disconnect the connector from the sender gauge.
    2. Connect terminals 2 and 3 on the wire harness side connector.
    3. Turn the ignition switch ON, check that the warning light comes on.

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

    Fig 9: Connecting Terminals To Connector
    G02928034Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. INSPECT ENGINE COOLANT TEMPERATURE RECEIVER GAUGE OPERATION 
    1. Disconnect the connector from the sender gauge.
      Fig 10: Disconnecting Connector From Sender Gauge
      G02928035Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch ON, check that the receiver gauge needle indicates COOL.

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

    3. Ground terminal on the wire harness side connected through a 3.4 W test bulb.
    4. Turn the ignition switch ON, check that the bulb comes on and the receiver gauge needle moves to the hot side.

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

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

    Fig 11: Engine Coolant Temperature Gauge Wiring Diagram
    G02928036Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. INSPECT ENGINE COOLANT TEMPERATURE RECEIVER GAUGE RESISTANCE 

    Measure the resistance between terminals.

    TERMINAL RESISTANCE

    Between Terminals Resistance (Ω)
    A - D 250
    B - C 250

    If resistance value is not as the specified, replace the meter.

    Fig 12: Locating A,B,C,D O-Rings
    G02928037Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. INSPECT ENGINE COOLANT TEMPERATURE SENDER GAUGE RESISTANCE 

    Connect the wire harness as shown in the illustration, and adjust the ammeter pointer to indicate "0" using the slide rheostat, then read the rheostat indication.

    TEMPERATURE

    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 sender gauge.

    Fig 13: Inspecting Coolant Temperature Sender Gauge Resistance
    G02928038Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. INSPECT OIL PRESSURE GAUGE RESISTANCE 

    Measure the resistance between terminals A and B.

    Fig 14: Measuring Resistance Between Terminals A & B
    G02928039Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    OIL PRESSURE GAUGE RESISTANCE

    Tester Connection Resistance (Ω)
    A - D 250
    B - C 250

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

  15. INSPECT OIL PRESSURE SENDER CONTINUITY 
    1. Disconnect the connector from the oil pressure sender.
    2. Check that no continuity exists between terminal and ground with the engine stopped.
    3. Check that 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 oil pressure sender.

    Fig 15: Checking Continuity In Terminal Using OHM Meter
    G02928040Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. INSPECT BRAKE WARNING LIGHT 
    1. Disconnect the connector from the brake fluid warning switch.
    2. Release the parking brake pedal.
    3. Connect the terminals on the harness side of the level warning switch connector.
      Fig 16: Connecting Terminals To Warning Switch Connector
      G02928041Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Start the engine, check that the warning light comes on.

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

  17. INSPECT BRAKE FLUID LEVEL WARNING SWITCH CONTINUITY 
    1. Remove the reservoir tank cap and strainer.
    2. Disconnect the connector.
      3. Fig 17: Disconnecting Connector
      G02928042Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Check that no continuity exists between the terminals with the switch OFF (float up).
    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 switch.

  18. INSPECT PARKING BRAKE SWITCH 
    1. Check that continuity exists between the terminal and switch body with the switch ON (switch pin released).
    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.

    Fig 18: Checking Brake Fluid Level Warning Switch - Continuity
    G02928043Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. INSPECT WASHER LEVEL WARNING LIGHT 
    1. Disconnect the connectors from the combination meter.
    2. Connect the negative (-) lead from the battery to terminal 16.
    3. Turn the ignition switch ON, check that the warning light comes on.

    If the warning light does not come on, test the bulb.

    Fig 19: Inspecting Level Warning Light Circuit Diagram
    G02928044Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  20. INSPECT WASHER LEVEL SWITCH CONTINUITY 
    1. Check that there is no continuity between terminals with switch OFF (float up).
    2. Check that there is continuity between terminals with the switch ON (float down).

    If operation is not as specified, replace the jar & pump assembly.

    Fig 20: Checking Continuity Between Terminals
    G02928045Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  21. INSPECT DRIVER'S SEAT BELT WARNING LIGHT 
    1. Disconnect the connector B from the combination meter.
    2. Connect the negative (-) lead from the battery to terminal 5.
    3. Turn the ignition switch ON and check that the warning light comes on.

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

    Fig 21: Inspecting Seat Belt Warning Light
    G02928046Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  22. w/o Power Seat (Passenger Side): 

    INSPECT BUCKLE SWITCH CONTINUITY 

    1. Check that continuity exists between terminals 1 and 2 on the switch side connector with the switch ON (belt fastened).
    2. Check that no continuity exists between terminal 1 an 2 on the switch side connector with the switch OFF (belt unfastened).

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

    Fig 22: Inspecting Continuity Between Terminals
    G02928047Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  23. w/o Power Seat (Driver Side): 

    INSPECT BUCKLE SWITCH CONTINUITY 

    1. Check that continuity exists between terminals 5 and 6 on the switch side connector with the switch ON (belt fastened).
    2. Check that no continuity exists between terminal 5 and 6 on the switch side connector with the switch OFF (belt unfastened).

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

    Fig 23: Checking Continuity Between Terminals
    G02928048Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  24. w/ Power Seat: 
    1. INSPECT BUCKLE SWITCH CONTINUITY 
    1. Check that continuity exists between terminals 1 and 2 on the switch side connector with the switch ON (belt fastened).
    2. Check that no continuity exists between terminal 1 and 2 on the switch side connector with the switch OFF (belt unfastened).

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

    Fig 24: Checking Continuity Terminal
    G02928049Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  25. INSPECT "4Lo/4Hi", 4WD" INDICATOR LIGHT 
    1. Disconnect the connectors from the combination meter.
    2. "Center Diff Lock" indicator:
      1. Ground terminal 13 on the wire harness side connector.
    3. "4WD" indicator:
      1. Ground terminal 14 on the wire harness side connector.
    Fig 25: Inspecting Indicator Light Wiring Diagram
    G02928050Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  26. INSPECT LIGHT CONTROL RHEOSTAT 
    1. Connect terminal 1 and 2 through a 3.4 - W test bulb.
    2. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 3.
    3. Turn the rheostat knob to fully counterclockwise, check that the test bulb goes off.
    4. Gradually turn the rheostat knob to clockwise, check that the test bulb brightness changes from dark to bright.

    If operation is not as specified, replace the rheostat.

    Fig 26: Inspecting Light Control Rheostat
    G02928051Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  27. INSPECT OPEN DOOR WARNING LIGHT 
    1. Disconnect the connector from the door courtesy switch and ground terminal on the wire harness side connector.
    2. Check that the warning light comes on.

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

    Fig 27: Inspecting Open Door Warning Light
    G02928052Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  28. Passenger's Seat Only: 
    1. INSPECT SEAT BELT WARNING OCCUPANT DETECTION SENSOR CONTINUITY 

    Check that continuity exists between the terminals 1 and 2 when pressing the sensing part.

    Fig 28: Checking Continuity Between Terminal
    G02928053Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If operation is not as specified, replace the sensor.

  29. INSPECT PASSENGER SEAT BELT WARNING LIGHT 
    1. Remove the center cluster finish panel.
    2. Disconnect the connectors from the center cluster integration.
    3. Connect the positive (+) lead from the battery to the terminal 4 and negative (-) lead terminal 10, and check that the warning light lights up.
      Fig 29: Connecting (+) Lead From Battery To Terminal 4 - And (-) Lead Terminal 10
      G02928054Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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