Yamaha Vmax VMX17C 2009 Service Manual page 484

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Fault code No.
Item
3
Open or short circuit in wire harness.
4
Defective atmospheric pressure sensor.
Reinstatement method
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Checking method
Probable cause of malfunction
1
Installed condition of O
2
Connections
• O
sensor coupler
2
• Wire harness ECU coupler
3
Open or short circuit in wire harness.
4
Check fuel pressure.
5
Defective O
sensor.
2
Reinstatement method
23
Atmospheric pressure sensor: open or short circuit detected.
• Repair or replace if there is an open or short
circuit.
• Between atmospheric pressure sensor coupler
and ECU coupler.
(blue–blue)
(pink–pink)
(black/blue–black/blue)
• Execute the diagnostic mode. (Code No. D:02)
• Replace if defective.
Refer to "CHECKING THE ATMOSPHERIC
PRESSURE SENSOR" on page 8-138.
Reinstated automatically if a normal signal is received.
24
O
sensor: no normal signal is received from the O
2
Able to start engine
Able to drive vehicle
sensor.
• Check for looseness or pinching.
2
• 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 O
(black/blue–black/blue)
(gray/black–gray/black)
(pink/black–pink/black)
(red/white–red/white)
• Refer to "CHECKING THE FUEL PRESSURE"
on page 7-4.
• Execute the diagnostic mode. (Code No. D:63)
• Replace if defective.
Starting the engine, warming it up until the coolant temperature is
60 °C (140 °F) or more, and then running it between 2000–3000
r/min until the engine trouble warning light turns off.
8-51
FUEL INJECTION SYSTEM
Check or maintenance job
sensor coupler and ECU coupler.
2
sensor.
2

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