A25A-FXS (COOLING): FLOW SHUTTING VALVE: REMOVAL; 2022 MY Avalon HV [08/2021

Last Modified: 08-21-2023	6.11:8.1.0	Doc ID: RM100000001YKTX
Model Year Start: 2022	Model: Avalon HV	Prod Date Range: [08/2021 - ]
Title: A25A-FXS (COOLING): FLOW SHUTTING VALVE: REMOVAL; 2022 MY Avalon HV [08/2021 - ]

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 flow shutting valve (water by-pass hose assembly) removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed
*: When performing learning using the Techstream.
Auxiliary battery terminal is disconnected/reconnected	Perform steering sensor zero point calibration	Lane Tracing Assist System
		Pre-collision System
		Intelligent clearance sonar system*
		Lighting System (for HV Model with Cornering Light)
	Memorize steering angle neutral point	Parking assist monitor system
	Memorize steering angle neutral point	Panoramic view monitor system
Replacement of inverter with converter assembly	Resolver learning	DTCs are stored Slight vibration at a vehicle speed of 5 km/h (3 mph) or less Shock or vibration during acceleration
Replacement of ECM	Perform Vehicle Identification Number (VIN) registration	MIL illuminates

NOTICE:

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

Click here

PROCEDURE

1. REMOVE INVERTER WITH CONVERTER ASSEMBLY

Click here

2. DRAIN ENGINE COOLANT (for Engine)

Click here

3. REMOVE FLOW SHUTTING VALVE (WATER BY-PASS HOSE ASSEMBLY)

(a) Disconnect the flow shutting valve (water by-pass hose assembly) connector.

(b) Disconnect the outlet heater hose connector from the No. 2 water by-pass pipe sub-assembly.

NOTICE:

Remove any foreign matter on the No. 2 water by-pass pipe sub-assembly and outlet heater hose connector before performing this work.

(1) Pull out the retainer to disengage the lock claws and pull off the outlet heater hose connector.

*a	Retainer
	Pull out
	Pull off

(2) Check that there is no foreign matter on the sealing surfaces of the disconnected water lines. Clean them if necessary.

(3) Cover the disconnected No. 2 water by-pass pipe sub-assembly and outlet heater hose connector with plastic bags to prevent damage and contamination.

NOTICE:

Remove any foreign matter on the flow shutting valve (water by-pass hose assembly) and inlet heater hose connector before performing this work.

(1) Pull out the retainer to disengage the lock claws and pull off the inlet heater hose connector.

*a	Retainer
	Pull out
	Pull off

(2) Check that there is no foreign matter on the sealing surfaces of the disconnected water lines. Clean them if necessary.

(3) Cover the disconnected inlet heater hose connector with plastic bag to prevent damage and contamination.

(d) Remove the bolt to disconnect the No. 2 water by-pass pipe sub-assembly.

(e) Remove the bolt to disconnect the flow shutting valve (water by-pass hose assembly).

(f) Slide the clip and disconnect the flow shutting valve (water by-pass hose assembly) from the water by-pass outlet sub-assembly.

HINT:

Use a container to catch any engine coolant which flows out of the flow shutting valve (water by-pass hose assembly) and water by-pass outlet sub-assembly.