Visually inspect the isc valve if necessary.

Throttle body inspection and cleaning
Throttle valve synchronizationDrive chain replacement
Use the special tool in the following procedures, to cut
and rejoin the drive chain.
Note
when using the special tool, apply a small
quantity of grease to the threaded parts of
the special tool.
Special tool
: 09922–22711 (drive chain cutting
and joint
tool set)
Driv ...
Cylinder head related parts inspection
Refer to “cylinder head disassembly and assembly” .
Cylinder head distortion
Decarbonize the combustion chambers.
Check the gasket surface of the cylinder head for
distortion. Use a straightedge and thickness gauge.
Take clearance readings at several places. If
readings exceed the ...
DTC “c15” (p0115-h/l): ect sensor circuit
malfunction
Detected condition and possible cause
Detected condition
Possible cause
C15
Output voltage is not with in the following
range.
0.15 V ≤ Sensor voltage < 4.85 V
Ect sensor circuit open or short.
Ect sensor malfunction.
Ec ...