2008 Yamaha Snowmobiles FX NYTRO Factory Service Manual, Page 280Get this manual

2008 Yamaha Snowmobiles FX NYTRO Factory Service Manual, Page 280

FUEL INJECTION SYSTEM Fault code No37 Item ISC (idle speed control) valve (stuck fully open) Speed sensor Fuel system voltage
value)Power supply to the ECU is not normalFaulty ECU memory(When this malfunction is detected in the ECU, the fault code
number might not appear on the meter Grip warmer: open or short circuit detectedThumb warmer: short circuit detectedConditions
requiring T.O.R.Soperation are detectedOil pressure switch: open circuit detected Communication error with the meter Fault
code NoEr-1 Er-2 Er-3 Er-4 Item ECU internal malfunction (output signal error) ECU internal malfunction (output signal error)
ECU internal malfunction (output signal error) ECU internal malfunction (input signal error) Symptom No signals are received
from the ECUNo signals are received from the ECU within the specified signal timeData from the ECU cannot be received correctlyNon-registered