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Home >> Toyota >> 2004 >> Highlander Limited, AWD >> Repair and Diagnosis >> Electrical >> Gauges >> Instrument Panel/Meter >> Combination Meter >> On-Vehicle Inspection

On-Vehicle Inspection

  1. INSPECT SPEEDOMETER 
    1. Check the operation.
      1. Using a speedometer tester, inspect the speedometer for acceptable indication error and check the operation of the odometer.
        • Reference: km/h (Canada) 
          Fig 1: Speed Table KM/H (Canada)
          G00803896Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • Reference: mph (U.S.) 
          Fig 2: Speed Table MPH (U.S.)
          G00803897Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE: Tire wear and over or under tire pressure will affect the indication error.
      2. Check the deflection width of the speedometer indicator.
        • Reference: Below 0.5 km/h (0.3 mph) 
  2. INSPECT OUTPUT SIGNAL OF VEHICLE SPEED 
    1. Check the output signal waveform.
      1. Remove the combination meter assy.
      2. Connect the oscilloscope to the terminals C12-13 and body ground
      3. Fig 3: Connecting Oscilloscope To Terminals C12-13 & Body Ground
        G00803898Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Start the engine.
      5. Check the signal waveform according to the condition (s) in the table below.
        Fig 4: Graph Of GND
        G00803899Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Fig 5: Condition Specified Table
        G00803900Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      As the vehicle speed increases, the cycle of the signal waveform narrows.

  3. INSPECT TACHOMETER 
    1. Check operation
      1. Connect the tune-up test tachometer and start the engine.
        NOTE:
        • Reversing the connection of the tachometer will damage the transistors and the insides of the diodes.
        • When removing or installing the tachometer, be careful not to drop or subject it to heavy shocks.
      2. Compare the result of the test with the standard indication.

        DC 13.5 V, 25°C (77°F) 

        Fig 6: Standard Indication Table
        G00803901Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT FUEL RECEIVER GAUGE 
    1. Disconnect the connector from the sender gauge.
    2. Connect terminals 1 and 2 on the wire harness side connector of the fuel sender gauge.
    3. Turn the ignition switch to the ON position, then check the position of the receiver gauge needle.
      • OK:Needle position is on (EMPTY) 
      Fig 7: Fuel Sender Gauge Connector
      G00803902Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Connect terminals 2 and 3 on the wire harness side connector of the fuel sender gauge.
    5. Turn the ignition switch to the ON position, then check the position of the receiver gauge needle.
      • OK:Needle position is on (FULL) 
  5. INSPECT FUEL LEVEL WARNING 
    1. Disconnect the connector from the sender gauge.
    2. Turn the ignition switch to the ON position, then check that the fuel level needle indicates EMPTY and the fuel level warning light comes on.
      • OK:Fuel level warning light comes on. 
  6. INSPECT LOW OIL PRESSURE WARNING LIGHT 
    1. Disconnect the connector from the low oil pressure switch.
    2. Turn the ignition switch to the ON position.
    3. Ground the terminal of the wire harness side connector, then check the low oil pressure warning light.
      • OK:Low oil pressure warning light comes on. 
  7. INSPECT BRAKE WARNING LIGHT 
    1. Inspect the parking brake warning light.
      1. Disconnect the connector from the parking brake switch.
      2. Turn the ignition switch to the ON position.
      3. Ground the terminal of the wire harness side connector, then check the parking brake warning light.
        • OK:Brake warning light comes on. 
    2. Inspect the brake fluid level warning light.
      1. Disconnect the connector from the brake fluid level warning switch.
      2. Turn the ignition switch to the ON position.
      3. Connect a terminal to the other terminal of the wire harness side connector, then check the brake fluid level warning switch.
        • OK:Brake warning light comes on. 
  8. INSPECT BRAKE FLUID LEVEL WARNING SWITCH 
    1. Remove the reservoir tank cap and strainer.
    2. Disconnect the connector.
    3. Measure the resistance between the terminals.
      • Standard:Float up (switch off): 10 k. or higher 
    4. Use a syphon, etc. to take fluid out of the reservoir tank.
    5. Measure the resistance between the terminals.
      • Standard:Float down (switch on): Below 1Ω 
    6. Pour the fluid back in the reservoir tank.
  9. INSPECT WASHER LEVEL WARNING SWITCH 
    1. Disconnect the connector from the washer level warning switch.
    2. Turn the ignition switch to the ON position.
    3. Ground the terminal of the wire harness side connector, then check the washer level warning light.
      • OK:Washer level warning light comes on. 
  10. MAINTENANCE LIQUID RESETTING PROCEDURE 

    Indicator Condition: 

    Fig 8: Maintenance Liquid Resetting Procedure Table
    G00803903Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Set the display window to ODO.
    2. Turn the ignition switch off.
    3. Pressing the reset switch, turn the ignition switch to the ON position (keep pressing for at least 5 seconds).
    4. Reset procedure is completed.

    HINT:

    • If the ignition switch is turned off during reset procedure, reset mode is canceled.
    • If the reset switch is turned off during the reset procedure, reset mode is canceled and the display shows the condition prior to the reset procedure.