Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Inspection

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual / Vehicle Interior / Heating / Air Conditioning / Room Temperature Sensor (for Front) / Inspection

INSPECTION

PROCEDURE

1. INSPECT COOLER (ROOM TEMP. 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:

  • 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.

HINT:

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

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

*a

Component without harness connected

(Cooler (Room Temp. Sensor) Thermistor)

*b

Sensing Portion

*c

Resistance (kΩ)

*d

Temperature (°C (°F))

*e

Allowable Range
    Removal
    REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during roo ...

    Installation
    INSTALLATION PROCEDURE 1. INSTALL COOLER (ROOM TEMP. SENSOR) THERMISTOR (a) Connect the connector and aspirator. (b) Engage the 2 claws to install the cooler (room temp. sensor) thermistor as shown in ...

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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

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