Toyota Avalon (XX50): Ambient Temperature Sensor(for 2gr-fks)

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Vehicle Interior / Heating / Air Conditioning / Ambient Temperature Sensor(for 2gr-fks)

Components

COMPONENTS

ILLUSTRATION

FRONT RADIATOR SIDE AIR GUIDE PLATE RH

THERMISTOR ASSEMBLY

Inspection

INSPECTION

PROCEDURE

1. INSPECT THERMISTOR ASSEMBLY

(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 thermistor assembly.

*a	Component without harness connected (Thermistor Assembly)
*b	Sensing Portion
*c	Resistance (kΩ)
*d	Temperature (°C (°F))
*e	Allowable Range

Installation

INSTALLATION

PROCEDURE

1. INSTALL THERMISTOR ASSEMBLY

(a) Connect the connector.

(b) Engage the clamp to install the thermistor assembly.

2. INSTALL FRONT RADIATOR SIDE AIR GUIDE PLATE RH

(a) Engage the 2 claws to install the front radiator side air guide plate RH.

3. INSTALL FRONT BUMPER ASSEMBLY

Click here

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 thermistor assembly removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed	Link
*: Applies only for when removing and installing or replacing the television camera assembly.
Front television camera assembly, front bumper assembly or radiator grille	Television camera view adjustment Television camera assembly optical axis adjustment (Back camera position setting)*	Panoramic View Monitor System	for Initialization Calibration
Front bumper assembly	Measurement of ultrasonic sensor detection angle Ultrasonic sensor detection angle registration	Intelligent Clearance Sonar System Intuitive Parking Assist System

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

*: Applies only for when removing and installing or replacing the television camera assembly.

Front television camera assembly, front bumper assembly or radiator grille

Television camera view adjustment
Television camera assembly optical axis adjustment (Back camera position setting)*

Panoramic View Monitor System

for Initialization

Calibration

Front bumper assembly

Measurement of ultrasonic sensor detection angle
Ultrasonic sensor detection angle registration

Intelligent Clearance Sonar System
Intuitive Parking Assist System

PROCEDURE

1. REMOVE FRONT BUMPER ASSEMBLY

Click here

2. REMOVE FRONT RADIATOR SIDE AIR GUIDE PLATE RH

(a) Disengage the 2 claws to remove the front radiator side air guide plate RH.

3. REMOVE THERMISTOR ASSEMBLY

(a) Disengage the clamp.

(b) Disconnect the connector to remove the thermistor assembly.

Air Conditioning Unit(for 2gr-fks)

Ambient Temperature Sensor(for A25a-fxs)

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