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Old 04-21-2016, 02:26 PM   #1
idougary
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P1355 Rear Coil

Hi,

My bike threw a P1355 code so I replaced the rear coil but this has not fixed the problem and I still have the P1355 code. Can anyone help with suggestions as to how to troubleshoot from this point?

Thanks,

Ian.
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Old 04-21-2016, 05:21 PM   #2
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stupid question but did you clear the previous code
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Old 04-21-2016, 05:47 PM   #3
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stupid question but did you clear the previous code
Them :-)
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Old 04-22-2016, 06:04 AM   #4
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Quote:
Originally Posted by idougary View Post
...My bike threw a P1355 code so I replaced the rear coil but this has not fixed the problem and I still have the P1355 code. Can anyone help with suggestions as to how to troubleshoot from this point?...
...
You should always clear the DTCs after reading them but you can tell if the code is "current" or "historic" by the behavior of the CEL (check engine light).

When you first turn on the ignition the oil pressure, security, and check engine lights all illuminate. After 4 seconds the security light and CEL go out (the oil pressure light goes out after the engine starts). After this 4 second initiation period the security and check engine LEDs may do one of the following three:
  1. If these remain off, there are no engine, security, or chassis DTCs.
  2. If these stay off for 4 seconds and then one or both illuminate again and then go off after 8 seconds, there is at least one historic DTC.
  3. If these stay off for 4 seconds and then one or both illuminate again and remains lit, there is at least one current DTC.
(The ABS LED will illuminate in a similar fashion to the security light and CEL to indicate ABS DTCs on bikes with ABS, however; its behavior is a little more complicated and some ABS DTCs will not clear until the bike has been operated above 16 km/h = 10 MPH).
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Old 04-22-2016, 07:27 AM   #5
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Yes I did clear the codes after I replaced the coil but when I started the bike again it only fired on the fornt cylinder and the code came back. I also tried resetting and removing the power commander but the bike still only runs on the front cylinder and throws the P1355 code.
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Old 04-22-2016, 09:25 AM   #6
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Yes I did clear the codes after I replaced the coil but when I started the bike again it only fired on the fornt cylinder and the code came back. I also tried resetting and removing the power commander but the bike still only runs on the front cylinder and throws the P1355 code.
The P1355 DTC means the voltage at the primary winding of the rear ignition coil is "out of range" high. This out of range voltage occurs when the ECM tries to fire the coil by grounding the Y/BE (yellow with blue stripe) wire that connects the coil "C" circuit to ECM pin #11. Four things can cause this:
  1. a short to voltage on the Y/BE wire
  2. a bad ECM
  3. a bad coil
  4. a bad piggyback device
Since you replaced the coil and removed the PC you only have two other sources of the problem.
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Old 04-22-2016, 11:01 AM   #7
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Thanks for the help guys, much appreciated.

The rubber boot for the plug connection is new, when I bought the coil it all came as one assembly.

I'll check the continuity on the wires next.
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Old 07-11-2019, 07:11 PM   #8
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Quote:
Originally Posted by stever975 View Post
The P1355 DTC means the voltage at the primary winding of the rear ignition coil is "out of range" high. This out of range voltage occurs when the ECM tries to fire the coil by grounding the Y/BE (yellow with blue stripe) wire that connects the coil "C" circuit to ECM pin #11. Four things can cause this:
  1. a short to voltage on the Y/BE wire
  2. a bad ECM
  3. a bad coil
  4. a bad piggyback device
Since you replaced the coil and removed the PC you only have two other sources of the problem.
I am having the same problem on my 2006 Dyna Wide Glide. I replaced the coil but did not fix the problem.

1. What's the Y/BE wire?
2. Is there a way to test the ECM?
3. Is there a way to test the coil other than on the bike? (Maybe I swaped in another
bad one)
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Old 07-16-2019, 06:59 AM   #9
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Originally Posted by GLRSR1951 View Post
I am having the same problem on my 2006 Dyna Wide Glide. I replaced the coil but did not fix the problem.

1. What's the Y/BE wire?
2. Is there a way to test the ECM?
3. Is there a way to test the coil other than on the bike? (Maybe I swaped in another
bad one)
I don't have technical data on Dyna models so I'm not sure if the VRSC wiring color codes are the same but:
  1. The Y/BE wire for VRSC bikes is used to fire the coil by connecting this wire to ground through an electronic switch in the ECM.
  2. There are no ECM tests mentioned in the VRSC EDMs (electrical diagnostic manuals). If the coil tests (various coil tests are explained in the EDM) are good, an ECM malfunction is then considered to be a likely cause.
  3. I don't know what you mean by this. Coil resistance tests can be performed either on or off the bike.
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Old 04-22-2016, 09:01 AM   #10
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Did you make sure the spring inside the rubber tube that connects the coil with the spark plug is stretched out enough to make good contact on both ends? This has been an issue on occasion.

Mike
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Old 04-22-2016, 06:42 PM   #11
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swap the two coils to verify the condition of the new coil. If the symptom moves to the front cylinder its a bad coil.
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Old 05-03-2016, 02:17 PM   #12
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swap the two coils to verify the condition of the new coil. If the symptom moves to the front cylinder its a bad coil.
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Old 04-26-2016, 02:05 AM   #13
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Looks like the bike will need to go to the stealers. Not good but I've tried everything else.
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Old 05-03-2016, 11:58 AM   #14
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Tried the plug and checked the continuity of the wiring all to no avail. Sadly the steeler is picking it up on Thursday.
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Old 05-03-2016, 12:57 PM   #15
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Tried the plug and checked the continuity of the wiring all to no avail. Sadly the steeler is picking it up on Thursday.
good luck! let us know how it went,or what they did.
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