Drain the engine coolant.
Remove the air cleaner.
Remove the heater hose clamp bracket mounting bolt (A) and the harness holder mounting bolt (B).

Disconnect the water bypass hose (C), then remove the harness holder (D) from the bracket.
Disconnect the upper radiator hose (A) and the water bypass hose (B).

Disconnect the ECT sensor 1 connector (A), then remove the water outlet (B).

Remove ECT sensor 1 (A) and the water bypass hose (B).

Overheating
How to Handle Overheating
Overheating symptoms are as follows:
• The high temperature indicator comes on or the engine suddenly loses power.
• Steam or spray comes out of the engine compartment ...
Map, Voice, Entering Destinations
...
Main Valve Body Disassembly, Inspection, and Reassembly (A/T)
Clean all parts thoroughly in solvent, and dry them with compressed air.
Blow out all passages.
Do not use a magnet to remove the check balls, it may magnetize the check
balls. ...