AIR CONDITIONING UNIT (for Sedan): Inspection

WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT NO. 1 COOLER THERMISTOR

Measure the resistance.

Standard resistance

TESTER CONNECTION AND SPECIFIED CONDITION

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

NOTE:

Touching the sensor even slightly may change the resistance value. Hold the connector of the sensor.
When measuring the resistance, the temperature of the sensor and the cooler thermistor must be the same.

HINT:

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

If the operation is not as specified, replace the cooler thermistor.

Fig 1: Inspecting No. 1 Cooler Thermistor