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Ignition Coil Secondary Signal Check

  1. Connect engine analyzer and Adapter (12-7-020) as described in IGNITION COIL PRIMARY SIGNAL CHECK. Remove ignition coil. Connect a spark plug wire (between coil and spark plug) to cylinder being tested. Connect inductive pick-up Blue lead, on lead to cylinder being tested. See Fig 1.
  2. Produce stopped signal on oscilloscope by pressing "R" button on tester. Display of ignition signal on oscilloscope will be strongest when inductive clip and Black lead are connected to same cylinder. Display on oscilloscope may be disturbed by neighboring ignition leads (this is normal).
Fig 1: Checking DIS Ignition Coil Secondary Signal
G95D31289
IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)

Application Primary Secondary
6-Cyl .82 (1)
(1) Secondary coil resistance cannot be measured.