Vacuum Pump: Testing and Inspection

Auto-cruise Vacuum Pump Check



1. Disconnect the cruise vacuum pump connector.
2. Measure the resistance between terminals (1) - (2) and between (1) - (3).

Standard value: 50 - 60 Ohms

3. Check that the solenoid valve makes an operating noise when battery positive voltage is applied between terminals (1) - (2) and between (1) - (3).
4. If there is a malfunction of the solenoid valve, replace the cruise vacuum pump assembly.


1. Disconnect the cruise vacuum pump connector.
2. Check that the motor operates when battery positive voltage is applied between terminals (1) - (4).