Ecu Not Responding To Diagnostics

Is your battery fully charged?

 

Has your cables a proven history?

 

https://www.thetriumphforum.com/threads/triumph-sprint-ecutune-ecu-not-responding.9796/#post-119231


could be a relay or a fuse do you have a manual to identify relays and fuses they come in different sizes, chances are you can have 2 of more the same have you visually inspected the fuses?

Triumph Daytona 955i Sprint Speed Triple Tiger T509 T595 Haynes Manual 3755 NEW

 

Is the lead set on the laptop for usb

 

http://www.triumphrat.net/sprint-forum/660218-keihin-p4-ecu.html

http://www.triumphrat.net/speed-triple-forum/142712-t509-troubleshooting-6.html


http://tuneecu.com/TuneECU_En/tasks.html


http://www.benelliforum.com/forum/g...wont-start-tuneecu-does-not-work-anymore.html

 

No should read full battery voltage ! ECU not reponding because it can't, insufficient power to run !!

 

Both brown wires with the white tracer will be the same polarity either + or - not as you describe them, possibly mis-described, they will be differently colour coded as + or - .

Solid brown is the most generally used ground / - colour.

When you first switch on the power you may well see an immediate drop in voltage which recovers within a short while as the ECU etc are reactivated / powered up.

I would check that you don't have another power drain on the battery, such as lights or something else switched on.

Try pulling the fuses for everything else except the ecu and recheck voltage at switch on, it should dip then recover within 30s to 1 min and I would expect to see 12.5 - 12.7 volts at the battery terminals depending on battery type, age etc.

 

Triumph ground is usually black with a yellow tracer.

 

Didn't know that thanks, something for me to be aware of.

Is that a historic thing or more recent change ?

 

THINK ITS BEEN THAT FROM 91

 

Thanks, just wondered if it was a carry over from the original wiring colours, every day is a school day.

Damn I've been at school a long time