Toyota Prius: Heat Exchanger Temperature Sensor

• Removal
• Inspection
• Installation

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 thermostat assembly removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure	Necessary Procedures	Effect/Inoperative Function When Necessary Procedures are not Performed	Link
*: Even when not replacing the part, it is necessary to perform the specified necessary procedures after installation.
Front bumper assembly*	Front television camera view adjustment	Panoramic View Monitor System
		Advanced Park

CAUTION / NOTICE / HINT

COMPONENTS (REMOVAL)

Procedure		Part Name Code
1	FRONT BUMPER ASSEMBLY	-	-	-	-
2	NO. 1 COOLER PACKING	88578Z	-	-	-
3	NO. 1 AIR CONDITIONING THERMISTOR ASSEMBLY	88620Q	-	-	-

*1	NO. 1 PIPING CLAMP	-	-
●	Non-reusable part	-	-

PROCEDURE

1. REMOVE FRONT BUMPER ASSEMBLY

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2. REMOVE NO. 1 COOLER PACKING

3. REMOVE NO. 1 AIR CONDITIONING THERMISTOR ASSEMBLY

Inspection

INSPECTION

PROCEDURE

1. INSPECT NO. 1 AIR CONDITIONINGTHERMISTOR ASSEMBLY

(a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Click Location & Routing(A53) Click Connector(A53) Tester Connection Condition Specified Condition Result A53-1(TCLT) - A53-2(SEG2) 10°C (50°F) 3.87 to 3.96 kΩ kΩ A53-1(TCLT) - A53-2(SEG2) 15°C (59°F) 3.15 to 3.23 kΩ kΩ A53-1(TCLT) - A53-2(SEG2) 20°C (68°F) 2.57 to 2.66 kΩ kΩ A53-1(TCLT) - A53-2(SEG2) 25°C (77°F) 2.12 to 2.20 kΩ kΩ A53-1(TCLT) - A53-2(SEG2) 30°C (86°F) 1.75 to 1.83 kΩ kΩ A53-1(TCLT) - A53-2(SEG2) 35°C (95°F) 1.46 to 1.53 kΩ kΩ A53-1(TCLT) - A53-2(SEG2) 40°C (104°F) 1.22 to 1.29 kΩ kΩ A53-1(TCLT) - A53-2(SEG2) 45°C (113°F) 1.03 to 1.09 kΩ kΩ A53-1(TCLT) - A53-2(SEG2) 50°C (122°F) 0.87 to 0.92 kΩ kΩ A53-1(TCLT) - A53-2(SEG2) 55°C (131°F) 0.74 to 0.78 kΩ kΩ A53-1(TCLT) - A53-2(SEG2) 60°C (140°F) 0.63 to 0.67 kΩ kΩ NOTICE: Hold the sensor only by its connector. Touching the sensing portion may change the resistance value. Perform the measurement once the sensor has adapted to the ambient temperature. HINT: As the temperature increases, the resistance decreases (see the graph). If the result is not as specified, replace the No. 1 air conditioning thermistor assembly.

*a Component without harness connected (No. 1 Air Conditioning Thermistor Assembly) *b Sensing Portion *c Resistance (kΩ) *d Temperature (°C (°F)) *e Allowable Range

Installation

INSTALLATION

CAUTION / NOTICE / HINT

COMPONENTS (INSTALLATION)

Procedure		Part Name Code
1	NO. 1 AIR CONDITIONING THERMISTOR ASSEMBLY	88620Q		-	-
2	NO. 1 COOLER PACKING	88578Z		-	-
3	FRONT BUMPER ASSEMBLY	-	-	-	-

*1	NO. 1 PIPING CLAMP	-	-
●	Non-reusable part	-	-

PROCEDURE

1. INSTALL NO. 1 AIR CONDITIONING THERMISTOR ASSEMBLY

*1	No. 1 Discharge Hose Sub-assembly	*2	No. 1 Piping Clamp
*3	No. 1 Air Conditioning Thermistor Assembly	-	-
*a	View A	*b	Installation Angle (90°)
*c	Installation Angle (39.7°)	*d	Installation Angle (92.6°)

(1) Install the No. 1 air conditioning thermistor assembly with the No. 1 piping clamp as shown in the illustration.

(2) Engage the clamp.

(3) Connect the connector.

2. INSTALL NO. 1 COOLER PACKING

*1	No. 1 Discharge Hose Sub-assembly	*2	No. 1 Piping Clamp
*3	No. 1 Air Conditioning Thermistor Assembly	*4	No. 1 Cooler Packing
*a	View A	*b	Installation Angle (90°)
*c	Installation Angle (39.7°)	*d	Installation Angle (92.6°)

(1) Perform the following procedure to install the No. 1 cooler packing.

1. Remove any remaining No. 1 cooler packing from the No. 1 air conditioning thermostat assembly and No. 1 discharge hose sub-assembly.

2. Remove the release paper from a new No. 1 cooler packing.

3. Install the No. 1 cooler packing as shown in the illustration.

3. INSTALL FRONT BUMPER ASSEMBLY

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