Vacuum Pump: Testing and Inspection

AUTO-CRUISE VACUUM PUMP




1. Disconnect the vacuum hose from the electric vacuum pump and connect a vacuum gauge to the vacuum pump
2. Disconnect the electric vacuum pump connector.




3. Connect terminal (1) to the battery (+) terminal, and connect terminals (2) and (3) to the battery (-) terminal.
4. Check to be sure that the vacuum gauge shows a reading of 53 kPa (15.7 in.Hg) or more when terminal (4) is connected to the battery (-) terminal.




5. In this condition, check to be sure that the vacuum gauge shows a 20 kPa (6 in.Hg) or less when terminals (2) and (3) are disconnected from the battery.