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Vacuum Switches: Pickup

  1. To test vacuum switch No. 1, connect an ohmmeter between vacuum switch terminals. Ohmmeter should not indicate continuity. Apply 3.54 in. Hg of vacuum to vacuum switch. Check continuity between switch terminals. Ohmmeter should indicate continuity.
  2. To test vacuum switch No. 2, connect ohmmeter between vacuum switch terminals and ensure continuity exists between switch terminals. Apply 16.93 in. Hg vacuum to vacuum switch. Ohmmeter should now indicate infinity (no continuity) between vacuum switch terminals. See Fig 3.
Fig 1: Corolla (Fed.) Air Suction System Components & Parameters
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Fig 2: Corolla (Calif.) Air Suction System Components & Parameters
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Fig 3: Pickup (Calif.) Air Suction System Comp & Parameters
G119344Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 4: Tercel (Calif.) Air Suction System Components & Parameters
G119345Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 5: Tercel (Fed.) Air Suction System Components & Parameters
G119346Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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