FI SYSTEM DIAGNOSIS 4-21 FAIL-SAFE FUNCTION FI system is provided with fail-safe function to allow the engine to start and the motorcycle to run in a mini- mum performance necessary even under malfunction condition. ITEM FAIL-SAFE MODE STARTING RUNNING ABILITY ABILITY CMP sensor When camshaft position signal has “NO” “YES” failed during running, the ECM Motorcycle can run, but once engine determines the cylinder positions as stops, engine can not start. # to be the same as before occur- rence of such a failure. IAP sensor Intake air pressure is fixed to 760 “YES” “YES” mmHg. TP sensor The throttle opening is fixed to full open position. “YES” “YES” Ignition timing is also fixed. ECT sensor Engine coolant temperature value is fixed to 80 °C (176 °F). “YES” “YES” Cooling fan is fixed on position. IAT sensor Intake air temperature value is fixed “YES” “YES” to 40 °C (104 °F). E AP sensor Atmospheric pressure is fixed to 760 “YES” “YES” mmHg. L Ignition signal #1 Ignition-off P “YES” “YES” #2, #3 & #4 cylinders can run. #2 Ignition-off “YES” “YES” M A #1, #3 & #4 cylinders can run. #3 Ignition-off “YES” “YES” S #1, #2 & #4 cylinders can run. #4 Ignition-off “YES” “YES” #1, #2 & #3 cylinders can run. Primary injection signal #1 Fuel-cut (primary side) “YES” “YES” #2, #3 & #4 cylinders can run. #2 Fuel-cut (primary side) “YES” “YES” #1, #3 & #4 cylinders can run. #3 Fuel-cut (primary side) “YES” “YES” #1, #2 & #4 cylinders can run. #4 Fuel-cut (primary side) “YES” “YES” #1, #2 & #3 cylinders can run.