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Discussion Starter #1
I have code 43. Bike starts and runs but its draining the battery overnight. Relay or ECU? Please help.
 

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I would check the relay first since it's easy to test. Then if that works, see if you can find another bike and swap the ECU to see if that fixes it.

Code 43.-Fuel System Voltage
Symptom-The ECU is unable to monitor the battery voltage
Probable Cause
Open/short circuit in wire harness
malfunction in main relay
malfunction in ECU
Able to start
Able to drive
 

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Discussion Starter #3
Turned out to be the ECU. For those that question whether the GTYR WR upgrade ECU will work. Well it does. $97.50 to my door and the bike runs perfect.
 
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