When handling the electrical parts or servicing fi system, observe the following points for the safety of the systems.
DTC “c28” (p1655): secondary throttle
valve actuator (stva) malfunction
Detected condition and possible cause
Detected condition
Possible cause
The operation voltage does not reach the stva.
Ecm does not receive communication signal from the
stva. Stva can not operate properly or its motor locked
Stva malfunction.
...
Drive chain related components
Drive chain
Engine sprocket
Rear sprocket
Dust seal
Bearing
Retainer
Sprocket mounting drum
Wheel damper
145 N·m (14.5 Kgf-m,
105.0 Lbf-ft)
60 N·m
(6.0 Kgf-m, 43.0 Lbf-ft)
Apply grease
Apply thread lock to
thread p ...
Ecm / various sensors
Since each component is a high-precision part, great
care should be taken not to apply any severe impacts
during removal and installation.
Be careful not to touch the electrical terminals of the
electronic parts (ecm, etc.). The static electricity from
your body may damage them. ...