Onvehicle Inspection

1. INSPECT A/C EVAPORATOR TEMPERATURE SENSOR

(a) Remove the A/C evaporator temperature sensor (A/ C thermistor).

(b) Disconnect the connector from the A/C evaporator temperature sensor (A/C thermistor).

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

Resistance (kQ)

Maximum permissible value line

Maximum permissible value line

Minimum permissible value line

2G 6B

Temperature

4G 1G4

Resistance

Tester connection

Condition

Specified condition

1 - 2

-10°C (14°F)

7.30 to 9.10 kQ

1 - 2

-5°C (23°F)

5.65 to 6.95 kQ

1 - 2

0°C (32°F)

4.40 to 5.35 kQ

1 - 2

5°C (41 °F)

3.40 to 4.15 kQ

Tester connection

Condition

Specified condition

1 - 2

10°C (50°F)

2.70 to 3.25 kQ

1 - 2

15°C (59°F)

2.14 to 2.58 kQ

1 - 2

20°C (68°F)

1.71 to 2.05 kQ

1 - 2

25°C (77°F)

1.38 to 1.64 kQ

1 - 2

30°C (86°F)

1.11 to 1.32 kQ

NOTICE:

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

• When measuring, the sensor temperature must be the same as the ambient temperature.

HINT:

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

If the resistance value is not as specified, replace the sensor.

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Do It Yourself Car Diagnosis

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