Vacuum Pump Test
- Connect vacuum gauge to ACT port (vacuum port to actuator) of vacuum pump. Using a jumper wire, connect positive battery lead to vacuum pump connector terminal No. 1 of vacuum pump connector. See Fig 1.
- Using another jumper wire, connect negative battery lead to terminal No. 2 of vacuum pump connector. Observe vacuum gauge. If vacuum reading is less than 7.87 in. Hg, replace vacuum pump.