Yamaha YP125R, Руководство по обслуживанию

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FUEL INJECTION SYSTEM
8-46
Probable cause of malfunction Check or maintenance job
1 Connections
• Injector coupler
• Wire harness ECU coupler • Check the couplers for any pins that may be
pulled out.
• Check the locking condition of the couplers.
• If there is a malfunction, repair it and connect
the coupler securely.
2 Open or short circuit in wire harness. • Repair or replace if there is an open or short
circuit.
• Between injector coupler and ECU coupler.
(red/black–red/black)
(orange/black–orange/black)
3 Defective injector. • Execute the diagnostic mode. (Code No. 36)
• Replace if defective.
Refer to “CHECKING THE FUEL INJECTOR”
on page 7-9.
Reinstatement method Cranking the engine. (Connect the fuel injector coupler.)
Fault code No. 41
Item Lean angle sensor: open or short circuit detected.
Fail-safe system
Unable to start engine
Unable to drive vehicle
Diagnostic code No. 08
FI diagnostic tool display
Lean angle sensor
• 0.4–1.4 (upright)
• 3.7–4.4 (overturned)
Checking method
Remove the lean angle sensor and incline it more than 45 de-
grees.
Probable cause of malfunction Check or maintenance job
1 Connections
• Lean angle sensor coupler
• Wire harness ECU coupler • 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.
2 Open or short circuit in wire harness. • Repair or replace if there is an open or short
circuit.
• Between lean angle sensor coupler and ECU
coupler.
(gray/red–gray/red)
(yellow/green–yellow/green)
(gray/black–gray/black)
3 Defective lean angle sensor. • Execute the diagnostic mode. (Code No. 08)
• Replace if defective.
Refer to “CHECKING THE LEAN ANGLE
SENSOR” on page 8-84.
Reinstatement method Turning the main switch to “ON”.
Fault code No. 39
Item Injector: open or short circuit detected.