Service Manual — page 668 of 715

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16-108 ELECTRICAL SYSTEM
Switches and Sensors
Outside Temperature Sensor Inspection
• Remove     the outside temperature sensor (see Outside
  Temperature Sensor Removal).
• Suspend    the sensor [A] in a container of machine oil so
  that the heat-sensitive portion is submerged.
• Suspend    a thermometer [B] with the heat-sensitive por-
  tion [C] located in almost the same depth with the sensor.
                               NOTE
    ○The sensor and thermometer must not touch the con-
      tainer side or bottom.

• Place  the container over a source of heat and gradually
  raise the temperature of the oil while stirring the oil gently
    for even temperature.
•   Using a digital meter, measure the internal resistance
    of the sensor across the terminals at the temperatures
    shown in the following.
    Outside Temperature Sensor Resistance
     Standard:    5.4 ∼ 6.6 kΩ at 0°C (32°F)
                    0.29 ∼ 0.39 kΩ at 80°C (176°F)
    If the reading is out of the standard, replace the sensor.
Fuel Level Sensor Inspection
• Remove:
   Fuel Pump (see Fuel Pump Removal in the Fuel System
      (DFI) chapter)
•   Check that the float moves up and down smoothly without
    binding. It should go down under its own weight.
    If the float does not move smoothly, replace the fuel pump.
      Float in Full Position [A]
      Float in Empty Position [B]

• Using a tester [A], measure the resistance across the ter-
  minals in the fuel level sensor lead connector [B].
    Special Tool - Needle Adapter Set: 57001-1457
    If the tester readings are not as specified, or do not
    change smoothly according as the float moves up and
    down, replace the fuel pump.
    Fuel Level Sensor Resistance
      Standard: Full position: 9.6 ∼ 12.4 Ω
                  Empty position: 222 ∼ 228 Ω