Yamaha VMAX 2009 Service Manual page 477

Fault code No.
Item
Diagnostic code No.
Meter display
Checking method
Probable cause of malfunction
1 Installed condition of crankshaft position
sensor.
2 Connections
• Crankshaft position sensor coupler
• Wire harness ECU coupler
3 Open or short circuit in wire harness.
4 Defective crankshaft position sensor.
Reinstatement method
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Checking method
Probable cause of malfunction
1 Connections
• Intake air pressure sensor coupler
• Wire harness ECU coupler
2 Open or short circuit in wire harness.
12
Crankshaft position sensor: no normal signals are received
from the crankshaft position sensor.
—
—
—
• Check for looseness or pinching.
• 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.
• Repair or replace if there is an open or short
circuit.
• Between the crankshaft position sensor cou-
pler and ECU coupler.
(gray–gray)
(black/blue–black/blue)
• Replace if defective.
Refer to "CHECKING THE CRANKSHAFT
POSITION SENSOR" on page 8-140.
Cranking the engine.
13
Intake air pressure sensor: open or short circuit detected.
Able to start engine
Able to drive vehicle
D:03
Displays the intake air pressure.
Set the engine stop switch to "
" ". (If the display value changes, the performance is OK.)
• 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.
• Repair or replace if there is an open or short
circuit.
• Between intake air pressure sensor coupler
and ECU coupler.
(black/blue–black/blue)
(pink/white–pink/white)
(blue–blue)
8-44
FUEL INJECTION SYSTEM
Check or maintenance job
", and then push the start switch
Check or maintenance job