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Home >> Toyota >> 1994 >> Pickup Base >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Component Testing >> Vacuum Pump

Vacuum Pump

  1. 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.
  2. Using another jumper wire, connect negative battery lead to terminal No. 2 of vacuum pump connector. Observed vacuum gauge. If vacuum reading is less than 7.87 in. Hg, replace vacuum pump.
Fig 1: Testing Vacuum Pump
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