Adjust the engine idle speed periodically on the engine at normal operating temperature.
To adjust the idle speed:

Engine oil and filter change
Throtile cable playCushion rod bearing removal and installation
Removal
Remove the cushion rod. Refer to “cushion rod removal and installation”
.
Remove the cushion rod bearing with the special
tool.
Special tool
(a):
09921–20240 (bearing remover set)
Installation
Caution
the removed bearings must be replaced with
new on ...
Radiator cap inspection
Inspect the radiator cap in the following procedures:
remove the radiator cap. Refer to “cooling circuit inspection” .
Attach the radiator cap (1) to the radiator tester (2)
as shown.
Slowly apply pressure to the radiator cap.
If the radiator cap does not hold the pre ...
Ect sensor inspection
Refer to “dtc “c15” (p0115-h/l): ect sensor circuit malfunction” in section
1a .
Inspect the ect sensor in the following procedures:
remove the ect sensor. Refer to “ect sensor removal and installation” .
Connect the ect sensor (1) to the circuit tester and
place it in the o ...