Rear cylinder not firing

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Oct 17, 2019 | 03:50 PM

toybox bikes

Thread Starter

Stage I

Joined: Oct 2019

Posts: 1

Likes: 0

From: Colorado

Rear cylinder not firing

Gents, I've seen/read a few posts on this.
Bottom Line: Rear Cylinder is not firing (2008
Code=P1355 Rear Ignition Coil Driver high/shorted

what I've checked and is good to go: - spark plugs, spark plug wires, Coil (ohms), power to coil, replaced crank sensor, injector good to go.

What I will check tonight: molex connection for crank sensor

Oct 17, 2019 | 03:52 PM

pgrchaplain

Road Master

Joined: Dec 2014

Posts: 821

Likes: 705

From: N/E Indiana

Borrow a Coil and see if thats the Fix.

Oct 17, 2019 | 08:17 PM

FLTRI17

Stellar HDF Member

Joined: Sep 2009

Posts: 2,113

Likes: 666

Swap the wires and you’ll know if it’s the coil. It won’t run very well if at all but you will know.
Bob

Oct 21, 2019 | 10:41 AM

Max Headflow

Seasoned HDF Member

Joined: Dec 2005

Posts: 19,861

Likes: 7,980

From: poway

Quote:

Originally Posted by FLTRI17

Swap the wires and you’ll know if it’s the coil. It won’t run very well if at all but you will know.
Bob

If he swaps plug wires, he'll also have to swap the primary wires to get the bike to run.

My guess is that either the rear cylinder primary wire is shorted to the coil power wire or the driver circuit in the ecu is toast. (or both)