Its ALIVE!!! won't crank, codes shown??

[old head]

decided to change the oil pressure sensor as it was leaking.  Changed it out left the air box off, started it and it ran for about a minute, no issues, no codes, service or leaks.  It was late no lights in shed, so I left it to finish up when had some daylight

a week later put everything back on, turned the key on and wouldn't cxrank. got the service triangle, no fuel pump noise, no relay, nothing.

so today, I pulled the tank and the air box back off, don't see anything that was unplugged or shorted...
checked the codes,
ECU  #17, #45
dashboard, every one, 1-7

cleared all the codes and turned the key, the service triangle pops up, still no fuel pump noise or starter relay.

took the battery negative off, the reconnected, this time get the same ECU codes 17,45
but only get 1,2,3 dashboard codes.

what is going on>>>  ideas?

Old Head

[pete roper]

Clean up the battery terminals well and check the earth strap mount. Sounds like a poor connection rather than anything more serious to me.

Pete

[Chuck in Indiana]

Need I say to pay attention to Pete?  My first thought was something loose. Check the ground that's hidden behind the starter, too. Getcha some DeOxit, take apart some connectors, spray, etc.

[old head]

I will check them out, but it doesn't act like a bad connection.  but you never know.

I thought maybe the key, the antenna or something of that nature had went out.

thanks

Old Head

[old head]

okay,
cleaned pos and negative posts, had a little corrosion...
cleaned the negative ground at the starter, same, little corosion.,

battery showed 11.9 volts this time, a week ago showed 12,3 as I remember.  Now it hasn't been run in a month, no charger hooked to it but it is a lithium so I think that is kinda low, but>

checked codes and had 1,2,3,4 and 45...

cleared them but they keep coming back on before I even hit the start button

so pull the first two fuses, 30 amp to check for good, both check good, dash goes out when pulled.  However when I put them back in the dash only shows 9 volts and it is acting kinda weird, not right.  I am watching the volt indicator and the battery voltage drops to 8.7, WTH

pulled the battery out put it on the 2 amp charger and we will see.  Never seen a battery do that before.

I suspect have found the issue.  This is my 2nd battery from Shorai, first one died under warranty they replaced.   I don't think it should have dropped to that low of voltage that quick but we will see.

thoughts?

Old Head

[oldbike54]

 Seems you are on the right track .

 Dusty

[old head]

well, it doesn't seem the battery is the problem.
it charged to 13.25 volts, installed same codes, still won't let me erase them, 1,2,3,45

I even jumped it to a car battery just to see and still nothing.

didn't see any disconnected connectors

Checked all the fuses, good.
fuel pump runs, everything  seems to be working.
SERVICE light and red triangle on dash.

Stumped.

[Kiwi Dave]

I reckon it might be time to check the connections at the ECU and Dashboard for corrosion.

[old head]

Its alive!!!!

swapped out relays and varooom....yeah baby....

So far so good, going out for a ride

Thx for the help

Old Head