Toyota 4Runner: Inspection

Toyota 4Runner Service Manual / Vehicle Interior / Heating / Air Conditioning / Front Evaporator Temperature Sensor / Inspection

INSPECTION

PROCEDURE

1. INSPECT NO. 1 COOLER THERMISTOR

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 - 2	-10°C (14°F)	7.30 to 9.10 kΩ
1 - 2	-5°C (23°F)	5.65 to 6.95 kΩ
1 - 2	0°C (32°F)	4.40 to 5.35 kΩ
1 - 2	5°C (41°F)	3.40 to 4.15 kΩ
1 - 2	10°C (50°F)	2.70 to 3.25 kΩ
1 - 2	15°C (59°F)	2.14 to 2.58 kΩ
1 - 2	20°C (68°F)	1.71 to 2.05 kΩ
1 - 2	25°C (77°F)	1.38 to 1.64 kΩ
1 - 2	30°C (86°F)	1.11 to 1.32 kΩ

HINT:

As the temperature increases, the resistance decreases (refer to the graph).

NOTICE:

Even slightly touching the sensor may change the resistance value. Be sure to hold the connector of the sensor.

When measuring the resistance, make sure the sensor temperature is almost the same as the ambient temperature.

If the result is not as specified, replace the No. 1 cooler thermistor.

Text in Illustration

*1	Sensor
*a	Component without harness connected (No. 1 Cooler Thermistor)
*b	Resistance (kΩ)
*c	Temperature (°C(°F))

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