Ignition system diagram
Refer to “wire color symbols” in section 0a .

Ignition system components location
Refer to “electrical components location” in section 0a .
Drive mode selector descriptionDTC “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.
...
Open circuit check
Possible causes for the open circuit are as follows. As
the cause can exist in the connector/coupler or terminal,
they need to be checked carefully.
Loose connection of connector/coupler.
Poor contact of terminal (due to dirt, corrosion or rust,
poor contact tension, entry of f ...
Special tools and equipment
Recommended service material
Note
required service material is also described in the following.
“Starter motor components”
Special tool
...