Test TC-41A - Ignition Coil No. 3 Primary Circuit
NOTE:
For connector terminal ID, see CONNECTOR IDENTIFICATION Directory. For wiring diagram, see WIRING DIAGRAMS - 2.4L
article.
- Turn ignition off. Disconnect ignition coil connector. Inspect ignition coil connector for damaged, pushed out or miswired terminals. Repair ignition coil connector as necessary. Perform TEST VER-2A. If ignition coil connector is okay, go to next step.
- Turn ignition on. Using scan tool, actuate ignition coil No. 3. Using scan tool in voltmeter mode, check voltage on ignition coil connector (harness side) ASD relay output circuit Dark Green/Orange wire. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair open Dark Green/Orange wire. Perform TEST VER-2A.
- Using an external ohmmeter, check resistance between ignition coil No. 3 terminal and battery voltage terminal on ignition coil pins. See Fig 1. 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.
- Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Using scan tool in ohmmeter mode, check resistance of ignition coil No. 3 driver circuit Red wire on ignition coil connector (harness side). 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. 3 driver circuit. Perform TEST VER-2A.
- Using an external ohmmeter, check resistance of ignition coil driver No. 3 circuit Red wire between ignition coil connector and PCM connector terminal No. 2. 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. 3 circuit. Perform TEST VER-2A.