Diagnostic information and procedures
Drive chain related 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.
...
Starter torque limiter removal and
installation
Removal
Remove the clutch assembly. Refer to “clutch removal” in section 5c .
Remove the washer (1), starter idle gear no. 1 (2)
And starter torque limiter (3).
Installation
Installation is in the reverse order of removal. Pay
attention to the following point:
apply ...
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 ...