AMBIENT TEMPERATURE SENSOR > INSPECTION

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1. INSPECT AMBIENT TEMPERATURE SENSOR (THERMISTOR ASSEMBLY)


    E118395E41
  1. Measure the resistance according to the value(s) in the table below.
    Text in illustration 
    *1
    Component without harness connected:
    (Ambient temperature sensor)

    Standard Resistance:
    Tester Connection
    Condition
    Specified Condition
    1 - 2
    10°C (50°F)
    3.00 to 3.73 kΩ
    1 - 2
    15°C (59°F)
    2.45 to 2.88 kΩ
    1 - 2
    20°C (68°F)
    1.95 to 2.30 kΩ
    1 - 2
    25°C (77°F)
    1.60 to 1.80 kΩ
    1 - 2
    30°C (86°F)
    1.28 to 1.47 kΩ
    1 - 2
    35°C (95°F)
    1.00 to 1.22 kΩ
    1 - 2
    40°C (104°F)
    0.80 to 1.00 kΩ
    1 - 2
    45°C (113°F)
    0.65 to 0.85 kΩ
    1 - 2
    50°C (122°F)
    0.50 to 0.70 kΩ
    1 - 2
    55°C (131°F)
    0.44 to 0.60 kΩ
    1 - 2
    60°C (140°F)
    0.36 to 0.50 kΩ

    NOTICE:
    1. Even slightly touching the sensor may change the resistance value. Be sure to hold the sensor connector.
    2. When measuring, the sensor temperature must be the same as the ambient temperature.

    HINT:
    As the temperature increases, the resistance decreases (see the graph).

    If the resistance is not as specified, replace the ambient temperature sensor.