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Frequency Solenoid B: Prelude

  1. Disconnect hose number 30 from frequency solenoid valve B. Plug inlet pipe at frequency solenoid valve B. Disconnect hose number 31 from frequency solenoid valve B and connect a vacuum pump. See Fig 1 .
    Fig 1: Checking Frequency Solenoid Valve A Accord model shown; Prelude model similar.
    G42248
  2. Apply vacuum to frequency solenoid valve B. If valve holds vacuum, replace frequency solenoid valve B and retest. If valve does not hold vacuum, apply 12 volts to frequency solenoid valve B.
  3. If frequency solenoid valve B holds vacuum, valve is okay. If frequency solenoid valve B does not hold vacuum, replace and retest.
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