I have a 2007 efi sportster 1200 with only 4500 miles I just bought. Been sitting a few years. Yesterday as I was riding the engine light came on and it started missing on the front cylinder. Checked codes found p1352 - Front ignition coil shorted/ high.

Having a hard time finding any information and other people having issues and this code. Thinking I've narrowed it down to either coil, wiring from ecm to coil, or the ecm itself.

Does anyone has any specs or how to test coil? And any wiring diagrams showing wires with colors or connector end views from ecm to coil so I can resistance test them?

Really trying to figure it out myself before I go spend alot at a dealership to have them fix it.

 

Wiring diagrams (Owners Manuals, Parts lists) are available from Harley Service Information Portal-

Go to http://www.harley-davidson.com/conte...n_US/home.html

Select "Owners" at the top right

Select "Owners Manual" on the left top

Either enter your VIN or use the search at the top right and enter your year and model ie. 2007 Sportster

Click on "Wiring Diagrams" and choose 2007 Sportsters

https://serviceinfo.harley-davidson....adebb5&id=5534

The 2007 Sportster Electrical Service manual will have all the trouble shooting steps

99495-07 2007 Sportster Models Electrical Diagnostic Manual ---
99484-07A 2007 Sportster Models Service Manual

Here is a start-

Ignition Coil Input Voltage Test
1. Turn IGN ON. Voltage will only be present for 2 seconds
after ignition is turned on.
2. Test for battery voltage at ignition coil terminals A
and B to ground.
3. Is battery voltage present?
a. Yes. Go to Test 3.
b. No. Repair open (Y/GN) wire between and
system relay terminal E.

 

Got it figured out. Ecm is shorted out to voltage inside. I have constant voltage on front coil driver wire at the coil plug if I unplug ecm I lose voltage so that's telling me ecm is shorted to voltage inside correct? Can I use a used ecm with same part number and not get it programmed or does it need to be programmed whether it's new or used?