RC51 Forums banner
1 - 16 of 16 Posts

·
Registered
Joined
·
8 Posts
Discussion Starter · #1 ·
hi well to make the story short when i start my bike theres no fi light but about a mile or two fi like will turn on and when i try to blip the throttle fast its like bugging so i jst wanna kno where is the connector that i can put a clip to check the light?? and any one have the list off codes for rc51 thanks alot
 

·
Premium Member
Joined
·
6,497 Posts
It's the green two-pole connector near the ECU.
With the ignition switch off, jumper the contacts, then turn the switch on.
It will start blinking.
If the code is in single digits, count the number of short blinks.
If the code is a two digit one, it will have a long blink, then a series of short blinks.
If there are more than one error, there will be slight pause between number sequences.
 

·
Premium Member
Joined
·
6,497 Posts
Code 8 is bad throttle position sensor, or connector, or related wiring problem.
Code 11 is bad speed sensor, connector, or related wiring problem.

Now remember that the ECU stores all detected fault codes, unless cleared.
For instance, if you had a throttle position sensor problem a long time ago, and it was fixed, the ECU still has that code logged in addition to the new fault code.
You may have multiple faults, but the only way to be sure is to clear the faults and let it discover them anew.

To clear the faults codes:
1. With the ignition key off, connect a jumper across the green service connector.
2. Turn the ignition key on (as you would to view fault codes).
3. Remove the service connector jumper.
4. The FI indicator will light solid for 5 seconds. During this 5 seconds, reconnect the service connector jumper.
5. The FI light will go off and then start blinking. All fault codes were erased.
6. If the FI light blinks 20 times, the fault codes were not erased. So repeat the previous steps.

Now any fault codes detected will be current.
However, from your initial problem description above, it does sound like a TP sensor related problem.
The bad TP sensor description says the engine behaves poorly when operating the throttle quickly.
Instead of using a known TP sensor position, it used a default 0 deg. position.
 

·
Registered
Joined
·
8 Posts
Discussion Starter · #6 ·
Thank you man I really appreciate ur help I will erase it later and ride in n see wat happens I'll poast the result in a couple of days :) ty again
 

·
Registered
Joined
·
8 Posts
Discussion Starter · #7 ·
Reset the code and rode my bike for an hour no fi light soo far and the bike runs good will keep u guys posted thanks again bro :)
 

·
Registered
Joined
·
35 Posts
i have this same prob, i checked the manual and closest thing i can come up with is the tp sensor without having to check the codes. havent had time yet. how ever the fi light goes off in the midlle of riding and the bike runs fine. its when the light is on and out of gear, and high rpms when the throttle bogs and breaks up. . will post if i fix the prob. hopefully something simple
 

·
Premium Member
Joined
·
6,497 Posts
Well most of the codes not only indicate a possible problem with a sensor, but a connection or wiring problems that can throw a code.

So check the connector for corrosion before assuming the TPS is bad.

I found on my bike several connectors that had corrosion on them when I was replacing my wiring harnesses.

I made sure I dabbed dielectric grease into all the connectors before mating to keep out moisture and prevent corrosion. Especially since I live near the ocean and it's salt air.
 

·
Registered
Joined
·
4 Posts
So I started my bike with an F1 8 code. That's not the problem. When I do a wheelie I glance down and it stays solid red unless I reset by turning it off. What is a solid f1 code?
 

·
Premium Member
Joined
·
6,497 Posts
A solid On FI light indicates either the service connector is jumped, or possibly, a faulty ECM.
A bliink code 8 indicated a possible TPS (Throttle Position Sensor).
 

·
Registered
Joined
·
4 Posts
hi well to make the story short when i start my bike theres no fi light but about a mile or two fi like will turn on and when i try to blip the throttle fast its like bugging so i jst wanna kno where is the connector that i can put a clip to check the light?? and any one have the list off codes for rc51 thanks alot
It's the green multi clip wires I unplugged mine and soaked it in coke to decorate it and it worked
 
1 - 16 of 16 Posts
Top