Toyota Tundra Service Manual: Ambient Temperature Sensor

Toyota Tundra Service Manual / Vehicle Interior / Air Conditioning / Ambient Temperature Sensor

Components

COMPONENTS

ILLUSTRATION

COOLER (AMBIENT TEMPERATURE SENSOR) THERMISTOR

Inspection

INSPECTION

PROCEDURE

1. INSPECT COOLER (AMBIENT 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

*1	Sensor Area
*a	Component without harness connected (Cooler (Ambient Temperature Sensor) Thermistor)
*b	Resistance (kΩ)
*c	Temperature (°C (°F))

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

Installation

INSTALLATION

PROCEDURE

1. INSTALL COOLER (AMBIENT TEMPERATURE SENSOR) THERMISTOR

(a) Attach the clamp to install the cooler (ambient temperature sensor) thermistor.

(b) Connect the connector.

2. INSTALL RADIATOR GRILLE SUB-ASSEMBLY

Click here

Removal

REMOVAL

PROCEDURE

1. REMOVE RADIATOR GRILLE SUB-ASSEMBLY

Click here

2. REMOVE COOLER (AMBIENT TEMPERATURE SENSOR) THERMISTOR

(a) Disconnect the connector.

(b) Using a clip remover, detach the clamp and remove the cooler (ambient temperature sensor) thermistor.

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Toyota Tundra Service Manual: Ambient Temperature Sensor

Removal

Compressor

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