Suspension general diagnosisFront brake master cylinder components
Reservoir cap
Plate
Diaphragm
Reservoir tank
Master cylinder
Dust boot
Piston set
Brake lever
Brake lever pivot bolt
Brake lever pivot bolt lock-nut
Brake light switch
Brake hose union bolt
Brake hose
23 N·m (2.3 Kgf-m,
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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.
...
Voltage check
If voltage is supplied to the circuit being checked, voltage
check can be used as circuit check.
With all connectors/couplers connected and voltage
applied to the circuit being checked, measure
voltage between each terminal and body ground.
If measurements were taken as shown ...