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Home >> Honda >> 1985 >> Prelude Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Feedback Carburetor System >> Trouble Shooting >> Vacuum Switch C
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Vacuum Switch C

  1. Disconnect vacuum hose No. 15 to the control box at the vacuum manifold and connect a vacuum pump to the hose. Apply vacuum to switch. Check for continuity between Black/Yellow and Blue/Black wire terminals of control box 6-pole connector.
  2. Continuity should be present when a vacuum above 12 in. Hg is applied. If there is no voltage, replace the vacuum switch C and retest.
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