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Home >> Subaru >> 1988 >> GL 2D Hatchback, 1.8 4, Standard >> Repair and Diagnosis >> Engine Performance >> System >> SPFI CEC System >> Adjustments & Inspection >> Fuel Injector

Fuel Injector

  1. Using a stethoscope or long screwdriver, ensure that there is an operating noise (clicking noise) from injector. If operating noise cannot be heard, check resistance of injector on control side.
  2. Turn ignition off. Disconnect connector from control unit. Use an ohmmeter to measure resistance between terminal No. 43 (RW) and terminal No. 48 (RB) of harness connector. A reading of .5-2.0 ohms should be present.
  3. If resistance is not within specifications. Disconnect connector from injector. Measure resistance between terminals of connector on injector side. Resistance should be .5-2.0 ohms. If not, replace injector.
  4. Check injector for insulation. Measure between each terminal of connector on injector side and body. No continuity should be present.
  5. If continuity is present, replace injector. If resistance reading in step 2) is outside .5-2.0 ohms range and resistance is within specification at injector connectors, check wiring harness and connector for poor connections.
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