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Home >> Eagle >> 1995 >> Vision ESi >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 3.3L >> Test TC-35B >> Ignition Coil #1 Primary Circuit
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Ignition Coil #1 Primary Circuit

NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION. For wiring diagram, see WIRING DIAGRAMS - 3.3L article in ENGINE PERFORMANCE. After each repair, perform TEST VER-2  .
  1. If scan tool displays IGNITION COIL #1 PRIMARY CIRCUIT in TEST TC-35A and ASD RELAY CONTROL CIRCUIT trouble code is also present, go to TEST TC-44A  . If ASD RELAY CONTROL CIRCUIT trouble code is not present, go to next step.
  2. Turn ignition off. Disconnect and inspect ignition coil connector. If any terminal is damaged, pushed out or miswired, repair as necessary. If connector is okay, go to next step.
  3. Turn ignition on. Using scan tool, actuate ignition coil No. 1. Using scan tool in voltmeter mode, check voltage on ignition coil connector terminal No. 4 (Dark Green/Orange wire). If voltage is less than 10 volts, go to TEST TC-37B  . If voltage is more than 10 volts, go to next step.
  4. Using an external ohmmeter, check resistance between ignition coil terminals No. 2 (Black wire) and No. 4 (Dark Green/Orange wire). If resistance is more than 2 ohms, replace ignition coil. If resistance is less than 2 ohms, go to next step.
  5. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. PCM is located under air cleaner. Using scan tool in ohm-meter mode, check resistance of PCM connector terminal No. 19 (Black wire). If resistance is less than 5 ohms, repair short to ground in Black wire. If resistance is more than 5 ohms, go to next step.
  6. Using an external ohmmeter, check resistance of Black wire between PCM connector terminal No. 19 and ignition coil connector terminal No. 2. If resistance is more than 5 ohms, repair open Black wire. If resistance is less than 5 ohms, replace PCM.
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