Supercharger (Boost) By-Pass Solenoid

Turn ignition off. Disconnect Supercharger By-Pass (SCB) solenoid connector. Measure resistance between SCB solenoid terminals. If resistance is not 68-78 ohms, replace solenoid. If resistance is 68-78 ohms, IAC solenoid is okay. See TEST KJ under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - CNG & GASOLINE article for additional testing and specifications.