Yamaha VMAX 2009 Service Manual page 496

Fault code No.
Item
Probable cause of malfunction
1 Malfunction in ECU.
Reinstatement method
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
D:14
Checking method
Meter display
D:15
Checking method
Probable cause of malfunction
1 Installed condition of accelerator position
sensor.
2 Connections
• Accelerator position sensor coupler
• Wire harness ECU coupler
3 Open or short circuit in wire harness.
50
Faulty ECU memory. (When this malfunction is detected in the
ECU, the fault code number might not appear on the meter.)
• Replace the ECU.
TIP
Do not perform this procedure with the main
switch turned to "ON".
Turning the main switch to "ON".
59
Accelerator position sensor: open or short circuit detected.
Able/Unable to start engine
Able/Unable to drive vehicle
D:14, D:15
Accelerator position sensor signal 1
• 15–16 (fully closed position)
• 97–102 (fully opened position)
• Check with throttle grip fully closed.
• Check with throttle grip fully open.
Accelerator position sensor signal 2
• 15–16 (fully closed position)
• 97–102 (fully opened position)
• Check with throttle grip fully closed.
• Check with throttle grip fully open.
• Check for looseness or pinching.
• Check that the sensor is installed in the speci-
fied position.
• 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 accelerator position sensor coupler
and ECU coupler.
(blue/green–blue/green)
(white–white)
(black–black)
(black/brown–black/brown)
8-63
FUEL INJECTION SYSTEM
Check or maintenance job
Check or maintenance job