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Help R1 Wiring problem Error code 1 and 2

This is a discussion on Help R1 Wiring problem Error code 1 and 2 within the Engine Swap forums, part of the Technical category; 2004 r1 know one can figure out my issue gauge cluster flashes error code 1 and 2 which is bad ecu manual said motor wont ...


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Old 03-12-2011, 06:16 AM
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Help R1 Wiring problem Error code 1 and 2

2004 r1 know one can figure out my issue gauge cluster flashes error code 1 and 2 which is bad ecu manual said motor wont start or run . But motor starts and runs but runs in a safe mode. tach wont work.does some one make a harness i can drop in the rhino . I dont think its bad parts i think its something got bypassed by the guy that wired it for me who i paid a lot of money to and cant figure it out. ANYONE GOT ANY SUGGESTIONS
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Old 03-12-2011, 12:41 PM
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i don't have any first hand experience with the r1 stuff. i have been meaning to pick one up and get a jig built for doing harness's for them but just have not had the time.

i would check the following

check all your grounds and make sure they are good and make sure you have a good engine ground.

check your battery make sure its good and has good voltage

check the comm wires from the ecu to the gauge. pin them out and make sure they are right

pin out all your sensor wires, make sure each wire goes to the ecu/gauge where it is supposed to

i know some of this seems simply but you would be surprised how often it is something simple

i wish i could help more.

on another note. to all you you guys doing r1 swaps. would it be worth my time to set up a jig for them. ie would you guys buy harness for them like i do for the canams???
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Old 03-12-2011, 07:57 PM
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I just wired my R1 about a month ago and my problem was that it wouldn't start at all. I got it figured out though. What you should really do is get the manual for your R1 and follow that diagram. It is very tedious but it is all well organized and will make sense if you look at it long enough. The problem I had was there are two wires that go to the ignition switch on the left hand side of the handle bar. The manual does not show it, but those two wire have to ground when the ignition is switched to the On position. This probably wont help you, but you really need to follow each wire.
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Old 03-12-2011, 09:00 PM
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Is your radiator fan hooked to the r1 harness?

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Old 03-12-2011, 10:06 PM
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I used a harness from Rossen Racing and didnt have any problems. You dash is going to give you all kinds of codes if you deleted all the stuff you didnt used IE exhuast valve, tip over sensor, smogs parts. You can try swapping out the ecu i suppose. PS the rossen harness was all complete except for the ignition switch stuff and that all we had to hook up. The harness was 250 and a core harness.
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Old 03-13-2011, 06:23 AM
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Yes my fan is hooked up to the r1 i think ive seen it come on once.i dont trust it that was another thing i wanted on a switch so i can turn it on . what about all the vacuum lines there all plugged off charcol filter taken out . ive also got 2 mass airflow sensers but the diagrahm only shows one.whats up with that
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Old 03-13-2011, 09:15 AM
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Try disconnecting the fan

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Old 03-13-2011, 10:20 AM
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didnt do anything
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Old 03-13-2011, 12:25 PM
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I had this same exact issue with mine, i finally got it fixed let me run out to my Rhino and see what I did. It had something to do with the fan though like Hounslow is saying
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Old 03-13-2011, 02:55 PM
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the manual will walk you thru the error codes and how to troubleshoot. it will come in handy to know all about your r1 motor. i have used mine alot...
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Old 03-14-2011, 10:25 AM
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Er1 and Er2 are signs that the gauge is not receiving data from the ECU. They are not ECU trouble codes. The wiring job probably deleted some wires that the gauge requires to function.

Without a proper connection to the ECU, the gauge will not be able to get trouble code data, so theres no way to tell if the ECU really is having problems (which is probably isnt if its running).

You can run a 04-06 R1 without the gauge cluster, but I would get a service manual, and see if you can get into Diagnostic Mode from the gauge cluster. If you can (which I doubt you will be able to), you can check each function out one by one to be sure you are getting the correct info from the sensors.

If you cant get into diag mode, I would check the wiring schematic in the service manual and confirm that all wires leading from the ECU to the gauges are there, and hooked up right. You can get the service manual in PDF form online. Try r1-forum.com. Im sure there are links to it there.

Why do you think it is in Safe mode? I dont believe there is a safe mode on that year R1. It either lets it start/run, or it doesnt. That being said, according to the service manual, Er-1 and Er-2 should result in a UNABLE to start/run condition, which makes me think the gauge is really not communicating with the ECU!
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Old 03-14-2011, 11:07 AM
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Good diagnostic WE. Makes perfect sense.
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