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Pick-Up Coil Short Check

  1. Connect one ohmmeter lead to ground. Attach other lead to control module harness terminal 3 and then to terminal 7.
  2. Resistance reading should be greater than 200,000 ohms for Mercedes-Benz vehicles.
  3. If resistance reading was not correct, disconnect harness from distributor. Connect ohmmeter leads to ground and to each pick-up coil pin in distributor. If readings are now correct, replace harness. If readings are still incorrect, replace pick-up coil.
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