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post #1 of 6 (permalink) Old 10-15-2020, 04:16 PM Thread Starter
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Check Engine Light

I've just finished adding an auxiliary fuse box under the passenger seat. To allow for switched circuits, I tapped into the blue/red wire on the left side, just after the connector. I unplugged the socket and checked with a test light to make sure I had the right wire. I unplugged another socket in the same location. After starting the bike, I now have a check engine light. Was it the unplugging process with the ignition on that would set a code? If so, will the light eventually turn off when the computer decides nothing is wrong?

Wayne
2017 ES
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post #2 of 6 (permalink) Old 10-15-2020, 04:48 PM
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Pictures would help immensely. "On the left side"- is that the lighting section of harness or the ECU connector you undid? Any chance of pulling fault code(s)?

Russ
2007A

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post #3 of 6 (permalink) Old 10-15-2020, 06:16 PM
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What you need is an OBD2 scan tool and adapter cable to suit your Yamaha. I am showing links to an Australian dealer, but you should be able to find similar dealers in the USA. With this tool, you will be able to read and clear faults. Note, one thing I have discovered, is that the OBD2 system on all vehicles is permanently "ON", even when the ignition is switched off. I presume that disconnecting the battery before doing any electrical work, may stop these false fault codes from being triggered.

https://obd2australia.com.au/product...engine-faults/

https://obd2australia.com.au/product...e-motorcycles/

FJR Models owned from new, 2001, 2003, 2006, 2009, 2011, 2014.
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post #4 of 6 (permalink) Old 10-15-2020, 09:40 PM
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Yes you will need an OBD reader to see what codes were triggered. I'm not sure which connectors you had apart.
Some Check Engine faults will reset when you go ride.... take a ride. If it doesn't reset, back to square one, OBD reader.
If you check my thread on OBD harness adapter (I do not make these any more), there are ebay sources I mention.
https://www.fjrowners.com/forums/11-...ml#post1258191

Ray
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post #5 of 6 (permalink) Old 10-16-2020, 04:53 AM
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I bought both the cable and the reader.. got tired of going to dealer to clear the light when I would run battery down. Have a thing for leaving the key on..

I got both off amazon..
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post #6 of 6 (permalink) Old 10-16-2020, 08:46 AM Thread Starter
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Thanks for your help everyone. I've ordered the cable from the Texas vendor on Ebay. A friend of mine has a scanner I can use.

Wayne
2017 ES
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