Toyota Tundra. Manual — part 2457

HINT:

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

If the result is not as specified, replace the thermistor.

INSTALLATION

1. INSTALL ROOM TEMPERATURE SENSOR

a. Attach the 2 claws to install the sensor.

Fig. 307: Identifying Room Temperature Sensor Claws
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2. INSTALL LOWER INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY LH

a. for Column Shift Type:

Remove the instrument panel finish panel (see REMOVAL ).

b. for Floor Shift Type:

Remove the instrument panel finish panel (see REMOVAL ).

3. INSTALL INSTRUMENT SIDE PANEL LH

a. for Column Shift Type:

Remove the instrument side panel (see REMOVAL ).

b. for Floor Shift Type:

Remove the instrument side panel (see REMOVAL ).



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.

2009 Toyota Tundra

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4. INSTALL COWL SIDE TRIM BOARD LH

a. for Regular Cab:

Install the cowl side trim board (see INSTALLATION ).

b. for Double Cab:

Install the cowl side trim board (see INSTALLATION ).

c. for CrewMax:

Install the cowl side trim board (see INSTALLATION ).

5. INSTALL FRONT DOOR SCUFF PLATE LH

a. for Regular Cab:

Install the front door scuff plate (see INSTALLATION ).

b. for Double Cab:

Install the front door scuff plate (see INSTALLATION ).

c. for CrewMax:

Install the front door scuff plate (see INSTALLATION ).

AMBIENT TEMPERATURE SENSOR

COMPONENTS

2009 Toyota Tundra

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Fig. 308: Identifying Ambient Temperature Sensor
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

REMOVAL

1. REMOVE AMBIENT TEMPERATURE SENSOR

a. Disconnect the connector.

b. Using a screwdriver, detach the clamp and remove the sensor.

HINT:

Tape the screwdriver tip before use.

2009 Toyota Tundra

2009 HVAC Air Conditioning - Tundra

Fig. 309: Locating Ambient Temperature Sensor Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION

1. INSPECT AMBIENT TEMPERATURE SENSOR

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

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection Condition Specified Condition

1 - 2

10°C (50°F) 3.00 to 3.73 kohms
15°C (59°F) 2.45 to 2.88 kohms
20°C (68°F) 1.95 to 2.30 kohms
25°C (77°F) 1.60 to 1.80 kohms
30°C (86°F) 1.28 to 1.47 kohms
35°C (95°F) 1.00 to 1.22 kohms

40°C (104°F) 0.80 to 1.00 kohms
45°C (113°F) 0.65 to 0.85 kohms
50°C (122°F) 0.50 to 0.70 kohms
55°C (131°F) 0.44 to 0.60 kohms
60°C (140°F) 0.36 to 0.50 kohms

2009 Toyota Tundra

2009 HVAC Air Conditioning - Tundra