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Air Control Valve B

  1. Disconnect upper vacuum hose No. 32 from air control valve B. Connect vacuum pump to hose. Connect vacuum pump to lower hose of air control valve. See Fig 1 . Apply vacuum to lower hose. It should hold vacuum.
  2. Apply vacuum to air control valve upper vacuum hose. With vacuum applied at upper hose, lower hose should release vacuum. If valve fails either check, replace valve.
Fig 1: Testing Air Control Valves A & B
G94658Courtesy of AMERICAN HONDA MOTOR CO., INC.