Test TC-37A - Ignition Coil #3 Primary Circuit (DTC 43)
WARNING: This page is about a different car, the 1994 Eagle Vision, 1994 Dodge Intrepid, 1994 Chrysler New Yorker, 1994 Chrysler LHS, and 1994 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
For circuit & connector terminal identification, see CONNECTOR IDENTIFICATION DIRECTORY TABLE
. For wiring diagrams, see WIRING DIAGRAMS
section. After each repair, perform TEST VER-2
.
- If DRB displays IGNITION COIL #3 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.
- 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.
- Turn ignition on. Using DRB, actuate ignition coil No. 3. Using DRB 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.
- Using an external ohmmeter, check resistance between ignition coil terminals No. 1 (Red 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.
- Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. PCM is located under air cleaner. Using DRB in ohmmeter mode, check resistance of PCM connector terminal No. 18 (Red/Yellow wire). If resistance is less than 5 ohms, repair short to ground in Red/Yellow wire. If resistance is more than 5 ohms, go to next step.
- Using an external ohmmeter, check resistance of Red/Yellow wire between PCM connector terminal No. 18 and ignition coil connector terminal No. 1. If resistance is more than 5 ohms, repair open Red/Yellow wire. If resistance is less than 5 ohms, replace PCM.