Throttle Opener Vacuum Switching Valve
- Vacuum Switching Valve (VSV) is Brown and located on right side of valve cover, near front of engine. Turn ignition off. Disconnect electrical connector from VSV.
- Using Ohmmeter, check resistance between VSV terminals. Replace VSV if resistance is not 33-39 ohms. If resistance is okay, go to next step.
- Disconnect vacuum hoses from VSV. Blow air through upper port. Air should exit from lower port and not from the filter. Replace VSV if air exits from filter. If air exits from lower port, go to next step.
- Energize VSV by applying battery voltage to Blue/Black wire terminal and ground to other terminal. Blow air through upper port. Air should exit from filter and not from lower port. Replace VSV if defective. Reconnect vacuum hoses and electrical connector.
Courtesy of SUZUKI OF AMERICA CORP.