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Ignition Coil Test

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 1998 GMC Savana Special, 1998 GMC Savana Camper Special, 1998 GMC Savana, 1998 Chevrolet RV Cutaway, and 1998 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition off. Remove engine cover. Disconnect distributor lead and wiring from ignition coil.
  2. Place DVOM on high scale. Connect DVOM as shown in step 1 of illustration. See Fig 1 . If reading is not infinite, replace ignition coil.
  3. Place DVOM on low scale. Connect DVOM as shown in step 2 of illustration. See Fig 2 . If reading is not 0.1 ohm, replace ignition coil.
  4. Place DVOM on high scale. Connect DVOM as shown in step 3 of illustration. See Fig 3 . If reading is not 5000-25,000 ohms, replace ignition coil.
  5. Reconnect distributor lead and wiring to ignition coil. Install engine cover.
Fig 1: Testing Ignition Coil - Step 1
G98B01081Courtesy of GENERAL MOTORS CORP.
Fig 2: Testing Ignition Coil - Step 2
G98D01082Courtesy of GENERAL MOTORS CORP.
Fig 3: Testing Ignition Coil - Step 3
G98F01083Courtesy of GENERAL MOTORS CORP.
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