Yamaha 2005 MT-01, Service Manual

Page: 347 / 435

FUEL INJECTION SYSTEM
7-32
NOTE:
• All displays on the meter disappear except the clock and odometer/trip meter/fuel reserve trip meter
displays.
• “dIAG” appears on the odometer/trip meter/fuel reserve trip meter LCD.
4. Press the “SELECT” button to select the diagnostic mode “dIAG”.
5. After selecting “dIAG”, simultaneously press the “SELECT” and “RESET” buttons for 2 seconds or
more to activate the diagnostic mode. The diagnostic code number “d01” appears on the clock LCD.
6. Set the engine stop switch to “ ”.
7. Select the diagnostic code number corresponding to the fault code number by pressing the “SE-
LECT” and “RESET” buttons.
NOTE:
• To decrease the selected diagnostic code number, press the “RESET” button. Press the “RESET”
button for 1 second or longer to automatically decrease the diagnostic code numbers.
• To increase the selected diagnostic code number, press the “SELECT” button. Press the “SELECT”
button for 1 second or longer to automatically increase the diagnostic code numbers.
8. Verify the operation of the sensor or actuator.
• Sensor operation
The data representing the operating conditions of the sensor appears on the odometer/trip meter/fu-
el reserve trip meter LCD.
• Actuator operation
Set the engine stop switch to “ ” to operate the actuator.
NOTE:
If the engine stop switch is set to “ ”, set it to “ ”, and then set it to “ ” again.
9. Turn the main switch to “OFF” to cancel the diagnostic mode.
Diagnostic code table
Fault
code
No.
Symptom Probable cause of malfunction
Diagnostic
code No.
12
No normal signals are
received from the
crankshaft position sensor.
• Open or short circuit in wire harness.
• Defective crankshaft position sensor.
• Malfunction in pickup rotor.
• Malfunction in ECU.
• Improperly installed sensor.
—
13
Cylinder-#1 intake air
pressure sensor: open or
short circuit detected.
• Open or short circuit in wire harness.
• Defective cylinder-#1 intake air pressure
sensor.
• Malfunction in ECU.
03
“d70 d01” “d01 d70”