Sym MAXSYM 400i - Idle Speed Control Valve (ISC)

4. Fuel Injection System
4-11
Idle Speed Control Valve (ISC stepper motor)
Function
ECU controls ISC stepper motor to adjust the bypass intake air quantity and stabilized the idle speed.
ISC
ECU
Battery
+Va
-Va
+Vb
-Vb
Step
S
N
S
S
N
N
Va
Vb
To this chapter contents