Is the ignition coil OK on a VW?
The ignition coil is OK because when you placed it in another location, it sparked (TEST 2). The connector that feeds the ignition coil (of the ‘dead’ cylinder) is getting both power and Ground (TEST 3). The Switching Signal circuit (between the ignition module and the ignition coil) is OK.
How to test the VW ignition control module?
The Switching Signal circuit (between the ignition module and the ignition coil) is OK. These three tests results help to indirectly confirm that the ignition control module has failed and is not activating this particular ignition coil. CASE 2: The multimeter reports NO continuity in the Switching Signal circuit.
How to test the 1.8L ignition control module?
You identified the ‘dead’ cylinder. You then proceeded to remove the ignition coil that belonged to the ‘dead’ cylinder and replaced it with one of the other 3 ignition coils. Next, you spark tested this ignition coil with a spark tester and IT DID NOT SPARK.
How do you disconnect the ignition coil?
Disconnect the 4-wire ignition control module connector. Disconnect the cylinder #4 ignition coil from its 3-wire electrical connector. Probing the wire labeled with the number 1 of the ignition coil’s connector ( see photo below ). – NOTE: This number is embossed on the ignition control module.
Can a bad ICM cause a new Beetle to misfire?
This tutorial will help you to diagnose a bad ignition control module (ICM) causing a misfire condition on your VW 1.8L Passat (New Beetle, Jetta, Golf) . It will also help you to troubleshoot a bad Coil-On-Plug (COP) ignition coil.
Although not an absolute must, this tool is a time saver of the first order. To see what this tool looks like, go here: Wire Piercing Probe. You’ll also need basic hand tools to remove the ignition module (if it tests bad that is), like a ratchet wrench, sockets, etc. The ignition control module has two connectors.