Brake symptom diagnosis

Rear brake hose routing diagram
Repair instructionsDTC “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.
...
Stv actuator removal and installation
Refer to “throttle body disassembly and assembly” in section 1d .
Caution
never remove the stva from the throttle
body.
Isc valve inspection
Refer to “dtc “c40” (p0505 / p0506 / p0507): isc valve circuit malfunction”
in section 1a .
Isc valve removal and installation
Refer t ...
Water hose removal and installation
Removal
Remove the side cowlings. Refer to “exterior parts
removal and installation” in section 9d (page 9d-
6).
Drain engine coolant. Refer to “cooling system inspection” in section
0b .
Lift and support the fuel tank. Refer to “fuel tank
removal and installation” in se ...