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Home › Eagle › 1997 › Talon Base, Automatic › Repair and Diagnosis › Engine Performance › System › Engine Controls - Tests W/Codes - Non-Turbo › Trouble Code Tests › Test TC-43A - Ignition Coil No. 1 Primary Circuit

Test TC-43A - Ignition Coil No. 1 Primary Circuit

NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION  Directory. For wiring diagram, see appropriate WIRING DIAGRAMS - NON-TURBO article.
  1. Before proceeding with this test, repair any ASD relay trouble codes. Using scan tool, erase trouble codes. Attempt to start engine. Crank engine for 10 seconds if necessary. Using scan tool, read trouble codes. If scan tool does not display any ignition coil trouble code, go to next step. If scan tool displays IGNITION COIL #1 PRIMARY CIRCUIT, go to step 4). If scan tool displays IGNITION COIL #2 PRIMARY CIRCUIT, go to TEST TC-42A. If scan tool displays IGNITION COIL #3 PRIMARY CIRCUIT, go to TEST TC-41A.
  2. Condition to set trouble code is not present at this time. Inspect all related wiring and connectors and repair as necessary. If no problems were found with wiring and connectors, go to next step. If related wiring and connectors were repaired, perform TEST VER-2A.
  3. Start engine. Wiggle wiring harness between ignition coil and Powertrain Control Module (PCM). If engine misses or stalls, repair wiring harness as necessary where wiggling caused problem to appear. Perform TEST VER-2A. If engine did not miss or stall, test is complete. Perform TEST VER-2A.
  4. Turn ignition off. Disconnect ignition coil connector. Inspect ignition coil connector for damaged, pushed out or miswired terminals. Repair ignition coil connector. Perform TEST VER-2A. If ignition coil connector is okay, go to next step.
  5. Turn ignition on. Using scan tool, actuate ignition coil No. 1. Using scan tool in voltmeter mode, check voltage on ignition coil connector (harness side) ASD relay output circuit. See the IGNITION COIL CONNECTOR WIRE IDENTIFICATION  table. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair open ASD relay output circuit. Perform TEST VER-2A.
  6. Using an external ohmmeter, check resistance between ignition coil No. 1 terminal and battery voltage terminal on ignition coil pins. See Figure. If resistance is less than 2 ohms, go to next step. If resistance is 2 ohms or more, replace ignition coil. Perform TEST VER-2A.
  7. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Using scan tool in ohmmeter mode, check resistance of ignition coil No. 1 driver circuit on ignition coil connector (harness side). See IGNITION COIL CONNECTOR WIRE IDENTIFICATION  table. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair short to ground on ignition coil No. 1 driver circuit. Perform TEST VER-2A.
  8. Using an external ohmmeter, check resistance of ignition coil No. 1 driver circuit between ignition coil connector and PCM connector terminal No. 11. If resistance is less than 5 ohms, replace PCM. Perform TEST VER-2A. If resistance is 5 ohms or more, repair open ignition coil driver No. 1 circuit. Perform TEST VER-2A.
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