2006-2008 Yamaha Snowmobiles Apex/Attak Factory Service Manual, Page 400Get this manual
FUEL INJECTION SYSTEM
Diagnostic mode table Switch the meter display from the regular mode to the diagnosis modeTo switch the display, refer to "DIAGNOSTIC MODE"NOTE: Check the intake air temperature and coolant temperature as close as possible to the intake air temperature sensor and the coolant temperature sensor respectively If it is not possible to check it with an atmospheric pressure gauge, judge it by using 101.3 kPa as the standard If it is not possible to check the intake air temperature, use the ambient temperature as referenceDiagnostic code 01 Data displayed on meter (reference value)125 degrees Fully closed position (1518) Fully open position (95100) Compare it to the value displayed on the meter Not cranking-atmospheric pressure Cranking-intake air pressure It changes at the value whitch is smaller than in the atomospheric pressureCompare it to the value displayed on the meter(min30 [C]) Compare it to the value displayed on the meter(min30 [C]) (0999; resets to after 999) OK if the numbers appear on the meter018.7 Normally, approximately 12.0 V