List Of Self-Diagnostic And Fail-Safe Actions - Yamaha YZ250F Owner's Service Manual

LIST OF SELF-DIAGNOSTIC AND FAIL-SAFE ACTIONS

LIST OF SELF-DIAGNOSTIC AND FAIL-SAFE ACTIONS
EAS1SM5365
LIST OF DIAGNOSTIC CODES
Fault
code
12 Crankshaft position sensor: no normal signals are received from the
crankshaft position sensor.
13 Intake air pressure sensor: open or short circuit detected.
14 Intake air pressure sensor: hose system malfunction (clogged or de-
tached hose)
15 Throttle position sensor: open or short circuit detected.
16 Throttle position sensor: stuck throttle position sensor is detected.
21 Coolant temperature sensor: open or short circuit detected.
22 Intake air temperature sensor: open or short circuit detected.
30 The vehicle has overturned.
33 Ignition coil: open or short circuit detected in the primary lead of the
ignition coil.
39 Injector: open or short circuit detected.
41 ECU: built-in lean angle sensor malfunction
44 EEPROM fault code No.: an error is detected while reading or writing
on EEPROM.
46 Vehicle system power supply: normal voltage is not supplied to the
ECU.
50 ECU: faulty ECU memory
COMMUNICATION ERROR WITH YAMAHA DIAGNOSTIC TOOL
Fault
code
Waiting No communication signal is received from the ECU.
for con-
nection
Er-2 Signals from the ECU cannot be received within the specified period
of time.
Er-3 Data from the ECU cannot be received correctly.
Er-4 Registered data cannot be received from the Yamaha diagnostic tool.
ITEM
ITEM
9-4
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