| Author | Message | ||
     Dennis355 |
I have a 08 1125R . Have not used it for a while but checked the battery and it was dead. Would not take a charge so I got a new battery. Installed it and took a short ride and in three days it drained the new battery. Recharged and hooked up and a friend said to hook up pos. terminal and then put a voltmeter between neg. terminal and ground wire . Should show no volts but it showed 4.9. I know this means something is drawing power even with the key in off position. Anyone have any thoughts on where to start looking ? I have no accessories hooked up. | ||
| Dannybuell |
Does your Instrument Cluster show the gear you are in? If not then you have an original 2008 IC, they are known to have a parasitic draw. | ||
| Froggy |
There was also a bug in older ECMs that if you used the key to shut the bike off instead of the kill switch, the ECM would slowly kill the battery like you described. | ||
| Dennis355 |
I have the original instrument cluster and an Erik Buell Racing race ecm tuned for the race exhaust and was told to disconnect the bank angle sensor. | ||
| Dannybuell |
you just gave the answer the original IC. | ||
| Jules |
Check the s/w version of your IC and post it up. As has been mentioned before the early ones suffered from parasitic draw - doing exactly what you describe. | ||
| Jules |
This is the basics from TT396 that relates to IC draw: TT396 – November 24, 2008 – 1125R Instrument Cluster Changes 1125R Instrument Cluster Software Changes Buell 1125R models with symptoms of excessive battery draw while parked may require an instrument cluster replacement. A software issue was identified that can keep the security system awake, causing excessive key-off battery draw. The affected clusters were installed on 1125R models produced from October 29, 2007 to May 16, 2008. If you are diagnosing a parasitic draw complaint, complete normal charging system checks, and key-off draw tests, to verify system function. It can be very difficult to verify a draw because the issue is likely to be intermittent. Keep in mind that ALL batteries if not charging are discharging. Be sure to distinguish between normal battery drain over time, and abnormal parasitic draw. After verifying that the vehicle’s charging system and battery are within specification, it will be necessary to verify the instrument cluster software level. Early instrument clusters only display the software level on the rear of the module. (see image below) A software version of 5.1.1 includes upgrades to prevent the abnormal draw and should NOT be replaced for draw related issues. If you are unable to locate a draw on the vehicle and the cluster software version is below 5.1.1, i.e. 4.1, 4.2, 4.3….., the instrument cluster should be replaced. Later instrument clusters allow you to verify software level on-board via the diagnostic menu. To get into the diagnostic menu, key-on while holding the Toggle and Mode buttons simultaneously. A quick reminder though that if the instrument cluster is new and has not yet been powered up for 30 minutes to synchronize, you can NOT enter the diagnostic menu. The last screen of Live Data items will be the software level. Inaccurate Low Fuel Warning Light Verify the software version as well if you are diagnosing inaccurate low fuel warning lights. Issues were identified with the Software Version 5.1.1 and 6.0 that could lead to a low fuel light coming on intermittently with adequate fuel levels. Follow the Diagnostic Flow Chart in the Electrical Diagnostic Manual for the correct diagnostic path. Note: there is a misprint in both the MY08 & MY09 electrical diagnostic menu for the Low Fuel Light Always On flow chart. When measuring the resistance between terminals D and A of the fuel pump connector [86B], the resistance measured should be between 850-1400 ohms. (Message edited by jules on October 17, 2011) |
