Lexus NX manuals

Lexus NX: Ambient Temperature Sensor

Lexus NX Service Manual / Vehicle Interior / Heating / Air Conditioning / Ambient Temperature Sensor

Components

COMPONENTS

ILLUSTRATION

*1

THERMISTOR ASSEMBLY (AMBIENT TEMPERATURE SENSOR)

-

-

Removal

REMOVAL

PROCEDURE

1. REMOVE FRONT BUMPER ASSEMBLY

(a) for Sport Package:

Click here

(b) except Sport Package:

Click here

2. REMOVE THERMISTOR ASSEMBLY (AMBIENT TEMPERATURE SENSOR)

(a) Detach the clamp.

(b) Disconnect the connector and remove the thermistor assembly (ambient temperature sensor).

Inspection

INSPECTION

PROCEDURE

1. INSPECT THERMISTOR ASSEMBLY (AMBIENT TEMPERATURE SENSOR)

(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:

  • Hold the sensor only by its connector. Touching the sensing portion may change the resistance value.
  • When measuring, the sensor temperature must be the same as the ambient temperature.
  • Use a thermometer to detect the ambient temperature of the installation area around the thermistor assembly (ambient temperature sensor).

HINT:

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

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

*a

Component without harness connected

(Thermistor Assembly (Ambient Temperature Sensor))

*b

Sensing Portion

*c

Resistance (kΩ)

*d

Temperature (°C (°F))

*e

Allowable Range

Installation

INSTALLATION

PROCEDURE

1. INSTALL THERMISTOR ASSEMBLY (AMBIENT TEMPERATURE SENSOR)

(a) Connect the connector.

(b) Attach the clamp to install the thermistor assembly (ambient temperature sensor).

2. INSTALL FRONT BUMPER ASSEMBLY

(a) for Sport Package:

Click here

(b) except Sport Package:

Click here

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