Toyota Prius: Discharge 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 discharge temperature sensor 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.
w/ Occupant Classification System: Front passenger seat*	Zero point calibration (Occupant classification system)	Occupant Classification System Passenger airbag ON/OFF indicator Airbag System (Front passenger side) Seat Belt Warning System (Front passenger)

CAUTION / NOTICE / HINT

CAUTION:

Be sure to read Precaution thoroughly before servicing.

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NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

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HINT:

When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

Learning completes when Toyota Prius vehicle is driven

Effect/Inoperative Function When Necessary Procedures are not Performed	Necessary Procedures	Link
Front Camera System	Drive the Toyota Prius vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more.

Learning completes when vehicle is operated normally

Effect/Inoperative Function When Necessary Procedures are not Performed	Necessary Procedures	Link
*1: w/o Power Back Door System *2: w/ Power Back Door System
Power Door Lock Control System*1 Back door opener	Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.
Power Back Door System*2	Reset back door close position
Air Conditioning System	for HEV Model: After the ignition switch is turned to ON, the servo motor standard position is recognized. for PHEV Model: After the ignition switch is turned to ON, the servo motor and expansion valve standard position is recognized.	-

CAUTION / NOTICE / HINT

COMPONENTS (REMOVAL)

Procedure		Part Name Code
1	AIR CONDITIONER UNIT ASSEMBLY	-	-	-	-
2	AIR CONDITIONING AMPLIFIER ASSEMBLY	88650N	-	-	-
3	COOLING UNIT PARTS	88899L	-	-	-
4	NO. 1 DISCHARGE TUBE	88715M		-	-
5	NO. 1 COOLING UNIT PACKING	88578B	-	-	-
6	DISCHARGE TEMPERATURE SENSOR	88620H	-	-	-

*1	CLAMP	-	-
●	Non-reusable part	-	-

PROCEDURE

1. REMOVE AIR CONDITIONER UNIT ASSEMBLY

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2. REMOVE AIR CONDITIONING AMPLIFIER ASSEMBLY

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3. REMOVE COOLING UNIT PARTS

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4. REMOVE NO. 1 DISCHARGE TUBE

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5. REMOVE NO. 1 COOLING UNIT PACKING

6. REMOVE DISCHARGE TEMPERATURE SENSOR

Inspection

INSPECTION

PROCEDURE

1. INSPECT DISCHARGE TEMPERATURE SENSOR

(a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Click Location & Routing(K104) Click Connector(K104) Tester Connection Condition Specified Condition Result K104-1 (SEG1) - K104-2 (TCHT) 10°C (50°F) 166.5 to 222.7 kΩ kΩ K104-1 (SEG1) - K104-2 (TCHT) 15°C (59°F) 131.8 to 174.5 kΩ kΩ K104-1 (SEG1) - K104-2 (TCHT) 20°C (68°F) 105.0 to 137.7 kΩ kΩ K104-1 (SEG1) - K104-2 (TCHT) 25°C (77°F) 84.1 to 109.4 kΩ kΩ K104-1 (SEG1) - K104-2 (TCHT) 30°C (86°F) 67.8 to 87.5 kΩ kΩ K104-1 (SEG1) - K104-2 (TCHT) 35°C (95°F) 55.0 to 70.4 kΩ kΩ K104-1 (SEG1) - K104-2 (TCHT) 40°C (104°F) 44.9 to 57.0 kΩ kΩ K104-1 (SEG1) - K104-2 (TCHT) 45°C (113°F) 36.9 to 46.4 kΩ kΩ K104-1 (SEG1) - K104-2 (TCHT) 50°C (122°F) 30.4 to 38.0 kΩ kΩ K104-1 (SEG1) - K104-2 (TCHT) 55°C (131°F) 25.2 to 31.3 kΩ kΩ K104-1 (SEG1) - K104-2 (TCHT) 60°C (140°F) 21.0 to 25.9 kΩ 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 discharge temperature sensor.

*a Component without harness connected (Discharge Temperature Sensor) *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	DISCHARGE TEMPERATURE SENSOR	88620H	-	-	-
2	NO. 1 COOLING UNIT PACKING	88578B		-	-
3	NO. 1 DISCHARGE TUBE	88715M		-	-
4	COOLING UNIT PARTS	88899L		-	-
5	AIR CONDITIONING AMPLIFIER ASSEMBLY	88650N	-	-	-
6	AIR CONDITIONER UNIT ASSEMBLY	-	-	-	-

*1	CLAMP	-	-
	N*m (kgf*cm, ft.*lbf): Specified torque	●	Non-reusable part
	Compressor oil ND-OIL 11 or equivalent	-	-

PROCEDURE

1. INSTALL DISCHARGE TEMPERATURE SENSOR

2. INSTALL NO. 1 COOLING UNIT PACKING

*1	NO. 1 DISCHARGE TUBE	*2	CLAMP
*3	DISCHARGE TEMPERATURE SENSOR	*4	NO. 1 COOLING UNIT PACKING
*a	View A	-	-

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

1. Remove any remaining No. 1 cooling unit packing from the discharge temperature sensor and No. 1 discharge tube.

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

3. Install the No. 1 cooling unit packing as shown in the illustration.

NOTICE:

Make sure to install the cooler packing so that its ends are on the opposite side of the discharge temperature sensor as shown in the illustration.

3. INSTALL NO. 1 DISCHARGE TUBE

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4. INSTALL COOLING UNIT PARTS

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5. INSTALL AIR CONDITIONING AMPLIFIER ASSEMBLY

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6. INSTALL AIR CONDITIONER UNIT ASSEMBLY

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