Yamaha FX10X 2008, Руководство по обслуживанию

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7-18
FI
FUEL INJECTION SYSTEM
Fault code No. 26 Symptom
Intake air pressure sensor 2 (cylinder #1): hose system malfunction
(clogged or detached hose).
Diagnostic code No. 04 (intake air pressure sensor 2 (cylinder #1))
Order Item/components and probable cause Check or maintenance job Reinstatement
method
1 Intake air pressure sensor 2 (cylinder #1)
hose is detached, clogged, kinked, or
pinched. Repair or replace the intake air pressure sensor 2
(cylinder #1) hose. Starting the
engine and
operating it at
idle.
2 Intake air pressure sensor 2 (cylinder #1)
malfunction at intermediate electrical
potential. Check and repair the connection.
Replace it if there is a malfunction.
3 Connections
Intake air pressure sensor 2 (cylinder #1)
coupler
Wire harness ECU coupler Check the couplers for any pins that may have
pulled out.
Check the locking condition of the couplers.
If there is a malfunction, repair it and connect the
coupler securely.
4 Defective intake air pressure sensor 2
(cylinder #1). Execute the diagnostic mode (code No. 04).
Replace if defective.
Refer to “Fault code No. 25”.
Fault code No. 30 Symptom Engine stops when an oil pressure drop is detected.
Diagnostic code No. – –
Order Item/components and probable cause Check or maintenance job Reinstatement
method
1 Oil pressure dropped. Place the snowmobile on a level surface, and
then check the oil pressure after warming up the
engine.
Refer to “ENGINE OIL REPLACEMENT” in
CHAPTER 2. Starting the
engine and
operating it at
idle.
2 Short circuit in oil pressure switch lead.
Short circuit in oil pressure switch sub-
lead. Disconnect the ECU coupler, and then use the
circuit tester to check for continuity between the
engine ground and the oil pressure switch cou-
pler (yellow/green).
Repair or replace if there is no continuity.
3 Defective oil pressure switch. Start the engine, warm it up for 1 minute, and
then use the circuit tester to check for continuity
between the oil pressure switch coupler (yellow/
green) and the switch body.
Replace if there is continuity.