Starter motor runs but does not crank the
engine
Starter motor componentsDTC “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.
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Special tools and equipment
Special tool
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Idle speed
Adjust the engine idle speed periodically on the engine at normal operating
temperature.
To adjust the idle speed:
Lift the fuel tank by referring to
the air cleaner section.
Start the engine and warm it
up by running at idling speed
for 10 minutes in summer
(where ambie ...