If no continuity is indicated (infinity or over limit), the circuit is open between terminals “a” and “c”.

If no continuity is indicated, the circuit is open between couplers “a” and “b-1”. If continuity is indicated, there is an open circuit between couplers “b-2” and “c” or an abnormality in coupler “b-2” or coupler “c”.

Open circuit check
Voltage checkSpeed sensor removal and installation
Removal
Remove the left side cowling. Refer to “exterior parts removal and
installation” in section 9d .
Disconnect the speed sensor lead wire coupler (1).
Remove the speed sensor (2).
Installation
Install the speed sensor in the reverse order of removal.
Pay atte ...
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.
...
General description
Fuel injection system description
Fuel system
The fuel delivery system consists of the fuel tank (1), fuel pump (2), fuel
filter (3), fuel feed hose (4), fuel delivery pipes
(5) including fuel injectors (6) and (7), fuel pressure regulator (8). There is
no fuel return hose. The fuel in the fu ...