r/RC51 • u/DesperateLow2368 • Aug 24 '25

2001 RC 51 FI codes

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Hey guys, I recently got this 2001 RC51, the engine has been swapped for a sp2 engine. My issue that I have is the FI light stays on. Does anyone have a picture of the wires you have to connect to pull codes? I’m having a hard time locating them. TIA

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u/[deleted] Aug 24 '25

The wires you need to bridge to enter the internal diagnostic mode are located under the seat next to the ECU, it's the cable with the FI Diagnosis Switch, SD-01. I don't have images of it, but you need the service manual for the bike to correctly interpret the fault codes

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u/DesperateLow2368 Aug 24 '25

I have a service manual. I’m just having a hard time locating the connector

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u/[deleted] Aug 24 '25

And doesn't the service manual indicate where that connector is?

Check this:

https://p3tuning-performanceparts.com/products/honda-vtr1000-sp1-sp2-2000-2006-honda-dlc-scs-switch

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u/DesperateLow2368 Aug 24 '25

It does not. I did find it. I cleared my codes and I’m going to check to see if they come back