Yamaha VMAX 2009 Service Manual page 478

Fault code No.
Item
3 Defective intake air pressure sensor.
Reinstatement method
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Checking method
Probable cause of malfunction
1 Intake air pressure sensor hose.
2 Intake air pressure sensor malfunction at
intermediate electrical potential.
3 Connections
• Intake air pressure sensor coupler
• Wire harness ECU coupler
Reinstatement method
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
D:01
Checking method
13
Intake air pressure sensor: open or short circuit detected.
• Execute the diagnostic mode. (Code No. D:03)
• Replace if defective.
Refer to "CHECKING THE INTAKE AIR
PRESSURE SENSOR" on page 8-147.
Turning the main switch to "ON".
14
Intake air pressure sensor: hose system malfunction (clogged
or detached hose).
Able to start engine
Able to drive vehicle
D:03
Displays the intake air pressure.
—
• Check the intake air pressure sensor hose
condition.
• Repair or replace the sensor hose.
• Check and repair the connection.
• Replace it if there is a malfunction.
• Check the coupler for any pins that may be
pulled out.
• Check the locking condition of the coupler.
• If there is a malfunction, repair it and connect
the coupler securely.
Starting the engine and operating it at idle.
15
Throttle position sensor: open or short circuit detected.
Able/Unable to start engine
Able/Unable to drive vehicle
D:01, D:13
Throttle position sensor signal 1
• 15–16 (fully closed position)
• 97–102 (fully opened position)
• Check with throttle valve fully closed.
• Check with throttle valve fully opened.
8-45
FUEL INJECTION SYSTEM
Check or maintenance job