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Home >> Volvo >> 1987 >> 780 AW71 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Fuel Injection System - BOSCH LH (Non Turbo) >> Testing >> Ground Circuits (Using A Test Light)

Ground Circuits (Using A Test Light)

  1. Connect one lead of test light to battery positive terminal or any location where full battery voltage is available. Connect other lead of test light to each ground terminal.
  2. The test light should illuminate fully at each terminal. If test light does not illuminate fully at any terminal, wiring connected to that terminal must be traced and repaired.