Air Control Solenoid Valve: M/T
- Remove cover to control box number 1. Disconnect hose to the air filter at air control solenoid valve and connect a vacuum gauge to the solenoid valve.
- If no vacuum is present, go to step 3). If vacuum is present, check for voltage at the air control solenoid valve Blue/Red wire. If there is voltage, go to Trouble Shooting. If there is no voltage, replace air control solenoid valve and retest.
- Disconnect vacuum hose number 4 at the control box number 1 (1300 models) or box number 2 (1500 models). Raise engine speed to over 1400 RPM and check for vacuum.
- If vacuum is present, system is okay. If no vacuum is present, check for voltage at the air control solenoid Blue/Red wire. If voltage is present, replace air control solenoid valve. If no voltage is present, go to Trouble Shooting.