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Ignition Control Unit (Vanagon)

  1. Turn ignition off. Attach DVOM to primary terminals of ignition coil. Disconnect hall sender wire harness connector from distributor. Turn ignition on.
  2. While observing DVOM reading, attach center terminal of connector to ground for 3 seconds. DVOM reading should briefly increase to 4.5 volts. If not, check wiring for short or open circuit. If wiring is okay, replace ignition control unit.