SpecificationsDTC “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.
...
Precautions
Precautions for driveline / axle
Refer to “general precautions” in section 00 (page 00-1).
Never inspect or
adjust the drive chain while the engine is running.
Caution
do not use trichloroethylene, gasoline or such similar
solvent. These fluids will d ...
Precautions
Precautions for clutch system
Refer to “general precautions” in section 00 (page 00-1).
Schematic and routing diagram
Clutch cable routing diagram
Refer to “throttle cable routing diagram” in section 1d .
Diagnostic information and procedures
Clutch system symptom diagnosis
...