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Home >> Mitsubishi >> 1993 >> Eclipse Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Fuel System >> Fuel Delivery >> Fuel Pressure Regulator Control Solenoid Valve (Turbo)
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Fuel Pressure Regulator Control Solenoid Valve (Turbo)

  1. Label and remove vacuum hoses from solenoid valve. Disconnect wiring harness. Connect vacuum pump to nipple where Black vacuum hose was connected. Leave pump connected throughout procedure.
  2. Apply vacuum and ensure valve leaks. Plug nipple where Blue-striped hose was connected. Apply vacuum and ensure vacuum holds. Remove plug from Blue-striped hose nipple. Apply battery voltage across valve terminals. Apply vacuum and ensure vacuum holds.
  3. Using an ohmmeter, check resistance across terminals of solenoid. Resistance should be 36-46 ohms at 68°F (20°C). If resistance is not within specification, replace valve.
  4. If resistance is within specification, disconnect solenoid connector. Turn ignition on. Using DVOM, measure voltage between harness connector terminal (Red wire) and vehicle ground. If voltage is battery voltage, go to step 5. If voltage is not battery voltage, check and repair circuit between MPI control relay and solenoid.
  5. This step checks continuity of circuit between solenoid and ECM. Disconnect ECM connector. Connect jumper wire between ECM terminal No. 7 (No. 57 on Eclipse) and vehicle ground. See Figure and Figure . Using DVOM, measure continuity between solenoid harness connector terminal Blue/Red wire (White wire on Eclipse) and vehicle ground. If continuity exists, system is okay. If continuity does not exist, check and repair circuit between solenoid and ECM.
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