Vacuum Control Solenoid Valve
- Disconnect vacuum sensing tubes from vacuum control solenoid valve (Orange color dot). Blow through solenoid valve from vacuum tube "B" shown in Fig. 1. Air should escape at front port.
- Disconnect electrical connector from solenoid valve and connect battery power to terminals on valve. Blow through hose again; air should escape through air filter at rear of valve. If valve does not respond as outlined, perform signal check.