Ambient Temperature Sensor (For Hatchback) Inspection

Vehicle Interior. Yaris. Ncp93, 131
Heating Air Conditioning. Yaris. Ncp93, 131

  1. INSPECT AMBIENT TEMPERATURE SENSOR (THERMISTOR ASSEMBLY)

Ambient Temperature Sensor (For Hatchback) -- Inspection



1. INSPECT AMBIENT TEMPERATURE SENSOR (THERMISTOR ASSEMBLY)


    Yaris. Ncp93, 131.Heating Air Conditioning.Air Conditioning System (For Sedan).Ambient Temperature Sensor (For Hatchback) Inspection

  1. Measure the resistance according to the value(s) in the table below.

    Text in Illustration
    *a
    		Component without harness connected
    (Ambient Temperature Sensor)
    *b
    		Sensing Portion
    *c
    		Acceptable Range
    *d
    		Resistance (kΩ)
    *e
    		Temperature (°C (°F))
    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		10°C (50°F)
    		3.00 to 3.73 kΩ
    15°C (59°F)
    		2.45 to 2.88 kΩ
    20°C (68°F)
    		1.95 to 2.30 kΩ
    25°C (77°F)
    		1.60 to 1.80 kΩ
    30°C (86°F)
    		1.28 to 1.47 kΩ
    35°C (95°F)
    		1.00 to 1.22 kΩ
    40°C (104°F)
    		0.80 to 1.00 kΩ
    45°C (113°F)
    		0.65 to 0.85 kΩ
    50°C (122°F)
    		0.50 to 0.70 kΩ
    55°C (131°F)
    		0.44 to 0.60 kΩ
    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 thermistor assembly temperature must be the same as the ambient temperature.
    HINT:
    As the temperature increases, the resistance decreases (see the graph).
    1. If the result is not as specified, replace the thermistor assembly.