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CRX Si

NOTE: The fast idle control solenoid valve is opened when atmospheric pressure is 26 in. Hg or less. Vacuum is produced in the vacuum hose between solenoid valve and air filter.
  1. When valve is open, 9 volts or more should be available between Black terminal (+) and Yellow terminal (-) of wire harness of control box. Open control box lid and disconnect wire harness from control box.
  2. Disconnect vacuum hose between fast idle control solenoid and No. 10 vacuum hose. Apply vacuum to the hose. It should hold vacuum. See Fig 1 .
    Fig 1: Testing CRX Si Fast Idle Control Solenoid Valve
    G35498
  3. Connect battery positive terminal to Black terminal of control box coupler, and battery negative terminal to Yellow terminal. Apply vacuum. It should not hold vacuum.
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