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 playEct 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 ...
Component location
Electrical components location
Ignition switch/immobilizer antenna
Iat sensor
Secondary fuel injector
Primary fuel injector
Iap sensor
Evap system purge control solenoid valve
Fuel pump relay
Turn signal/side-stand relay
Cooling fan relay
Ect ...
Camshaft sprocket
Inspect the camshaft sprocket in the following
procedures:
remove the intake and exhaust camshafts. Refer to “engine top side
disassembly” .
Inspect the teeth of each camshaft sprocket for wear
or damage.
If they are worn or damaged, replace the sprocket/
camshaft assembl ...