Toyota Tundra Service Manual: Inspection

INSPECTION

PROCEDURE

1. INSPECT COOLER (ROOM TEMPERATURE SENSOR) 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 (50°F)

3.00 to 3.73 kΩ

15°C (59°F)

2.45 to 2.88 kΩ

20°C (68°F)

1.95 to 2.30 kΩ

25°C (77°F)

1.60 to 1.80 kΩ

30°C (86°F)

1.28 to 1.47 kΩ

35°C (95°F)

1.00 to 1.22 kΩ

40°C (104°F)

0.80 to 1.00 kΩ

45°C (113°F)

0.65 to 0.85 kΩ

50°C (122°F)

0.50 to 0.70 kΩ

55°C (131°F)

0.44 to 0.60 kΩ

60°C (140°F)

0.36 to 0.50 kΩ

NOTICE:

  • Touching the sensor even slightly may change the resistance value. Hold the connector of the sensor.
  • When measuring the resistance, the sensor temperature must be the same as the ambient temperature.

HINT:

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

Text in Illustration

*a

Component without harness connected

(Cooler (Room Temperature Sensor) Thermistor)

*b

Resistance (kΩ)

*c

Temperature

If the result is not as specified, replace the cooler (room temperature sensor) thermistor.

    Components

    Installation

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