Ambient Temperature Sensor Inspection

Heater & Air Conditioning System. Lexus Gs430, Gs300. Uzs190 Grs190
Air Conditioning. Lexus Gs430, Gs300. Uzs190 Grs190

  1. INSPECT A/C AMBIENT TEMPERATURE SENSOR

Ambient Temperature Sensor -- Inspection



1. INSPECT A/C AMBIENT TEMPERATURE SENSOR


    Lexus Gs430, Gs300. Uzs190 Grs190.Air Conditioning.Air Conditioning System.Ambient Temperature Sensor Inspection

  1. Remove the A/C ambient temperature sensor.

  1. Disconnect the connector from the A/C ambient temperature sensor.

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

    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 connector of the sensor.
    1. When measuring, the sensor temperature must be the same as the ambient temperature.
    HINT:
    As the temperature increases, the resistance decreases (see the graph).