Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: 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 flow shutting valve (water by-pass hose assembly) removal/installation are shown below.

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.

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PROCEDURE

1. REMOVE INVERTER WITH CONVERTER ASSEMBLY

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2. DRAIN ENGINE COOLANT (for Engine)

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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.

(c) Disconnect the inlet heater hose connector from the flow shutting valve (water by-pass hose assembly).

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.