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).

Transmission End Cover Air Check Valve Inspection and Replacement (A/T)
NOTE:
There are two types of the transmission end cover; the type A and the
type B; and both types are available.
The differences between the types A and B of the end covers are:
...
As required by the FCC
1)This device complies with Part 15 of the
FCC Rules and Canadian RSS-210/RSSGen.
Operation is subject to the following
two conditions: (1) this device may not
cause harmful interference, and (2 ...
Malfunction Indicator Lamp
If this indicator comes on while driving, it means one of the engine’s emissions
control systems may have a problem. Even though you may feel no difference in your
vehicle’s performance, it ...