Toyota Tundra. Manual — part 2461

Fig. 333: Identifying Evaporator
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

17. REMOVE EVAPORATOR TEMPERATURE SENSOR

a. Remove the sensor.

Fig. 334: Identifying Evaporator Temperature Sensor
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION

1. INSPECT EVAPORATOR 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 (14°F) 7.30 to 9.10 kohms

-5°C (23°F) 5.65 to 6.95 kohms

0°C (32°F)

4.40 to 5.35 kohms

5°C (41°F)

3.40 to 4.15 kohms

10°C (50°F) 2.70 to 3.25 kohms
15°C (59°F) 2.14 to 2.58 kohms
20°C (68°F) 1.71 to 2.05 kohms
25°C (77°F) 1.38 to 1.64 kohms

2009 Toyota Tundra

2009 HVAC Air Conditioning - Tundra

Fig. 335: Temperature And Resistance Graph
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

HINT:

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

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

REASSEMBLY

1. INSTALL EVAPORATOR TEMPERATURE SENSOR

a. Install the sensor to a location that is 1 fin to the right or left of its previous location.

30°C (86°F) 1.11 to 1.32 kohms

NOTE:



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 almost the
same as the ambient temperature.

NOTE:

If reusing the evaporator, do not insert the sensor into a location where
the sensor was previously inserted.

2009 Toyota Tundra

2009 HVAC Air Conditioning - Tundra

EVAPORATOR TEMPERATURE SENSOR DIMENSION

Fig. 336: Installing Evaporator Temperature Sensor
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2. INSTALL NO. 1 COOLER EVAPORATOR SUB-ASSEMBLY

a. Install the evaporator to the blower case (front side).

Fig. 337: Identifying Evaporator
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Install the blower case (back side).

c. Install the 6 screws and attach the 4 claws.

Area Standard Dimension

a

48 mm (1.89 in.)

b

9 mm (0.354 in.)

c

34.3 mm (1.35 in.)

d

47.7 mm (1.88 in.)

e

50 mm (1.97 in.)

2009 Toyota Tundra

2009 HVAC Air Conditioning - Tundra

Fig. 338: Identifying Blower Case Screws And Claws
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

d. Install the packing.

Fig. 339: Identifying Packing
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

3. INSTALL HEATER RADIATOR UNIT SUB-ASSEMBLY

a. Install the heater radiator unit.

b. Attach the 3 claws to install the heater clamp.

2009 Toyota Tundra

2009 HVAC Air Conditioning - Tundra