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))

Removal

REMOVAL PROCEDURE 1. REMOVE AIR CONDITIONING UNIT (a) Remove the air conditioning unit (See page ). ...

Installation

INSTALLATION PROCEDURE 1. INSTALL AIR CONDITIONING UNIT (a) Install the air conditioning unit (See page ). ...

Other materials about Toyota 4Runner:

Removal
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Evaporator Temperature Sensor Circuit (B1413)
DESCRIPTION The No. 1 cooler thermistor is installed on the evaporator in the air conditioning unit to detect the temperature of the cooled air that has passed through the evaporator and control the air conditioning. It sends appropriate signals to the No ...