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Combination Meter: Inspection

  1. Inspect combination meter circuit  :

    Disconnect the 5 connectors from the combination meter.

    Fig 1: Identifying Combination Meter Connectors & Terminals
    G01908850Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 2: Combination Meter Terminal Specification Chart (1 Of 3)
    G01908851Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 3: Combination Meter Terminal Specification Chart (2 Of 3)
    G01908852Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 4: Combination Meter Terminal Specification Chart (3 Of 3)
    G01908853Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Key Unlock Warning System, inspect combination meter operation  :
    1. Connect the positive (+) lead from the battery to terminal 12 of connector D.
      Fig 5: Testing Key Unlock Warning System Circuits (1 Of 3)
      G01908854Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the negative (-) lead from the battery to terminals 9, 16 and 17 of connector E.
    3. Check the chime sounds.
    4. Disconnect the negative (-) lead from the battery to terminal 9 of connector E.
      Fig 6: Testing Key Unlock Warning System Circuits (2 Of 3)
      G01908855Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Check that the chime stops sounding.
    6. Connect the negative (-) lead from the battery to terminal 9 of connector E.
      Fig 7: Testing Key Unlock Warning System Circuits (3 Of 3)
      G01908856Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Connect the positive (+) lead from the battery to terminal 12 of connector B.
    8. Check that the chime stops sounding.

      If the operation is not as specified, replace the combination meter.

  3. Driver's Seat Belt Warning System, inspect combination meter operation  :
    1. Connect the positive (+) lead from the battery to terminal 12 of connector D and terminal 12 of connector B, and negative (-) lead from the battery to terminals 17 and 3 of connector E.
      Fig 8: Testing Seat Belt Warning System Circuits (1 Of 4)
      G01908857Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that the driver's seat belt warning light flashes and buzzer sounds for approx. 6 seconds.
    3. Disconnect the negative (-) lead from the battery to terminal 3 of connector E and reconnect it again.
      Fig 9: Testing Seat Belt Warning System Circuits (2 Of 4)
      G01908858Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Check that the buzzer sounds again.
      5. NOTE: Check the buzzer for 6 seconds. If the operation is not as specified, replace the combination meter.
    5. Check that the buzzer stops sounding when disconnecting the negative (-) lead from terminal 3 of connector E.
  4. Passenger's Seat Belt Warning System, inspect combination meter operation  :
    1. Connect the positive (+) lead from the battery to terminal 12 of connector D and terminal 12 of connector B, and negative (-) lead from the battery to terminal 17 of connector E.
      Fig 10: Testing Seat Belt Warning System Circuits (3 Of 4)
      G01908859Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect terminal 14 of connector E to battery negative (-) terminal through a 3.4 W test bulb.
    3. Connect the negative (-) lead from battery to terminal 4 of connector E.
    4. Check that the bulb flashes.
    5. Disconnect the negative (-) lead from the battery to terminal 4 of connector E, and reconnect it again.
    6. Check that the bulb flashes again.
    7. Check that the bulb flashing when disconnecting terminal 4 of connector E from the negative (-) lead.
      Fig 11: Testing Seat Belt Warning System Circuits (4 Of 4)
      G01908860Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If operation is not as specified, replace the combination meter.

  5. Key Illuminated Entry System, inspect combination meter operation  :
    1. Connect the positive (+) lead from the battery to terminal 12 of connector D, and negative (-) lead from the battery to terminals 9 and 17 of connector E.
      Fig 12: Testing Seat Belt Warning System Circuits (1 Of 2)
      G01908861Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect terminal 15 of connector E to battery negative (-) terminal through a 3.4 W test bulb.
    3. Check that the bulb lights up.
    4. Disconnect the negative (-) lead from the battery to terminal 9 of connector E.
      Fig 13: Testing Seat Belt Warning System Circuits (2 Of 2)
      G01908862Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. After approx. 5 seconds, check that the bulb turns off.
  6. Light Auto Turn OFF System, inspect combination meter operation  :
    1. Connect the positive (+) lead from the battery to terminal 12 of connector B and terminal 12 of connector D, and negative (-) lead from the battery to terminal 19 of connector E.
      Fig 14: Testing Light Auto Turn OFF System Circuits (1 Of 4)
      G01908863Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that the voltage of terminal 6 of connector E is the battery positive voltage after the positive (+) lead from the battery has been connected to terminal 2 of connector E.
    3. Check that the voltage of terminal 5 of connector E is the battery positive voltage after the positive (+) lead from the battery has been connected to terminal 1 of connector E.
      Fig 15: Testing Light Auto Turn OFF System Circuits (2 Of 4)
      G01908864Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Check that the voltage of terminals 5 and 6 of the connector E is O V after terminal 12 of connector B has been disconnected, and the positive (+) lead from the battery has been connected to terminal 9 of connector E.
      Fig 16: Testing Light Auto Turn OFF System Circuits (3 Of 4)
      G01908865Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Check that the voltage of terminals 5 and 6 of the connector E is battery positive voltage after terminals 1 and 2 of connector E have been disconnected and reconnected.
      Fig 17: Testing Light Auto Turn OFF System Circuits (4 Of 4)
      G01908866Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. INSPECT SPEEDOMETER ON-VEHICLE 
    NOTE:
    • Tire wear and tire over or under inflation will increase the indication error.
    • If error is excessive, replace the speedometer.

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

    Fig 18: Speedometer Standard Indication
    G01908867Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. Inspect vehicle speed sensor operation  :
    1. Connect the positive (+) lead from the battery to terminal 1, and negative (-) lead to terminal 2.
      Fig 19: Testing Vehicle Speed Sensor
      G01908868Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the positive (+) lead from tester to terminal 3 and the negative (-) lead to terminal 2.
    3. Rotate the shaft.
    4. Check that there is some voltage change from approx. 0 V to 11 V or more between terminals 2 and 3.
      NOTE: The voltage change should be 4 times in every revolution of the speed sensor shaft.

      If the operation is not as specified, replace the sensor.

    9. 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.
  9. Inspect tachometer on-vehicle  :
    1. Connect a tune-up test tachometer, and start the engine.
    2. Compare the tester with tachometer indications.

      DC 13.5 V 20°C at(68°F) 

      Fig 20: Tachometer Standard Indication
      G01908869Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. 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 21: Testing Fuel Receiver Gauge Operation (1 Of 2)
      G01908870Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Connect terminals 2 and 3 on the wire harness side connector through a 3.4 W test bulb.
      Fig 22: Testing Fuel Receiver Gauge Operation (2 Of 2)
      G01908871Courtesy 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 silicon oil in the gauge, it takes a little time for the needle to stabilize.

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

  11. Inspect fuel receiver gauge resistance  :

    Measure the resistance between the terminals.

    Fig 23: Identifying Fuel Receiver Gauge Connector Terminals
    G01908873Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 24: Fuel Receiver Gauge Specifications
    G01908872Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  12. Inspect fuel sender gauge  :

    Measure the resistance between terminals 1 and 3 in each float position.

    Fig 25: Identifying Fuel Sender Positions & Connector Terminals
    G01908875Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 26: Fuel Sender Specifications
    G01908874Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  13. Inspect engine coolant temperature receiver gauge operation  :
    1. Disconnect the connector from the sender gauge.
      Fig 27: Disconnecting Engine Coolant Temperature Sender Gauge
      G01908876Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch ON and check that the receiver gauge needle indicates COOL.
    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.
      Fig 28: Testing Coolant Temperature Receiver Gauge
      G01908877Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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

  14. Inspect engine coolant temperature receiver gauge resistance  :

    Measure the resistance between the terminals.

    Fig 29: Identifying Engine Coolant Temperature Receiver Gauge Terminals
    G01908879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 30: Engine Coolant Temperature Receiver Gauge Specifications
    G01908878Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  15. Inspect engine coolant temperature sender gauge resistance  :

    Connect the wire harness as shown in Fig 31, and adjust the ammeter pointer so as to indicate "0" using the slide rheostat, then read the rheostat indication.

    Fig 31: Testing Engine Coolant Temperature Sender Gauge Resistance
    G01908881Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 32: Engine Coolant Temperature Sender Gauge Specifications
    G01908880Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  16. Inspect low oil pressure warning light  :
    1. Disconnect the connector from the warning switch and ground terminal on the wire harness side connector.
      Fig 33: Testing Low Oil Pressure Warning Light
      G01908882Courtesy 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.

  17. Inspect low oil pressure switch  :
    1. Disconnect the connector from the switch.
    2. Check that there is continuity between the terminal and ground with the engine stopped.
      Fig 34: Testing Low Oil Pressure Switch
      G01908883Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. NOTE: Oil pressure should be over 24.5 kPa (0.25 kgf/cm2 ,3.55 psi). If the operation is not as specified, replace the switch.
    3. Check that there is no continuity between the terminal and ground with the engine running.
  18. Inspect brake warning light  :
    1. Disconnect the connectors from the level warning switch and parking brake switch.
      Fig 35: Testing Brake Warning Light
      G01908884Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect terminals on the wire harness side connector of the level warning switch connector.
    3. Turn the ignition switch ON and check that the warning light lights up.

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

  19. Inspect brake fluid level warning switch continuity  :
    1. Check that no continuity exists between the terminals with the switch OFF (float up).
      Fig 36: Testing Brake Fluid Level Warning Switch
      G01908885Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that continuity exists between the terminals with the switch ON (float down).

      If the operation is not as specified, replace the switch.

  20. Inspect parking brake switch continuity  :
    1. Check that continuity exists between the terminals with the switch ON (switch pin released).
      Fig 37: Testing Parking Brake Switch
      G01908886Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that no continuity exists between the terminals with the switch OFF (switch pin pushed in).

      If the operation is not as specified, replace the switch.

  21. Inspect washer level warning light  :
    1. Disconnect the connectors from the level warning switch and parking brake switch.
    2. Connect the terminals on the wire harness side connector of the level warning switch connector.
    3. Remove the CHARGE 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.

      Fig 38: Testing Washer Level Warning Light
      G01908887Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  22. Inspect washer level warning switch  :
    1. Check that no continuity exists between the terminals with the switch OFF (float up).
      Fig 39: Testing Washer Level Warning Switch
      G01908888Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that continuity exists between the terminals with the switch ON (float down).

      If the operation is not as specified, replace the switch.

  23. Inspect driver's seat belt warning light  :
    1. Disconnect the connector from the driver's buckle switch, and connect terminal 1 and the body ground.
      Fig 40: Testing Driver's Seat Belt Warning Light
      G01908889Courtesy 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, inspect the bulb or wire harness.

  24. Inspect buckle switch continuity  :
    1. Passenger's Seat only:

      Press the sensing part of the belt warning occupant detection sensor (See step  27).

    2. Check that continuity exists between the terminals on the switch side connector with the switch ON (belt unfastened).
      Fig 41: Testing Buckle Switch
      G01908890Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Check that no continuity exists between the terminals on the switch side connector with the switch OFF (belt fastened).

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

  25. Inspect light control rheostat  :
    1. Connect terminals 1 and 3 through a 3.4 W test bulb.
      Fig 42: Testing Light Control Rheostat
      G01908891Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the positive (+) lead from the battery to terminal 1, and the negative (-) lead to terminal 2.
    3. Turn the rheostat knob fully counterclockwise, check that the test bulb goes off.
    4. Gradually turn the rheostat knob clockwise, check that the test bulb brightness changes from dark to bright.

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

  26. Inspect open door warning light  :
    1. Disconnect the connector from the door courtesy switch and ground terminal on the wire harness side connector.
      Fig 43: Testing Open Door Warning Light
      G01908892Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch ON, check that the warning light lights up.

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

  27. Passenger's Seat only, inspect seat belt warning occupant detection sensor continuity  :

    Check that continuity exists between terminals 1 and 3 when pressing the sensing part.

    Fig 44: Testing Seat Belt Warning Occupant Detection Sensor (Passenger's Seat)
    G01908893Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the operation is not as specified, replace the sensor.

  28. Inspect passenger seat belt warning light  :

    Connect the positive (+) lead from the battery to terminal 1, and negative (-) lead to terminal 4, then check that the warning light lights up.

    Fig 45: Testing Passenger Seat Belt Warning Light
    G01908894Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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