FUEL INJECTION SYSTEM
8-57
B-9
Delete the fault code.
Turn the main switch to “ON”,
and then rotate the rear wheel
by hand.
Start the engine, and input the
vehicle speed signals by operat-
ing the vehicle at 20 to 30 km/h
(12 to 19 mph).
Check that the fault code num-
ber is not displayed.
Fault code No.
42
Item
A
Speed sensor: no normal signals are received from the speed
sensor.
B
Gear position switch: open or short circuit is detected.
C
Clutch switch: open or short circuit is detected.
Fail-safe system
Able to start engine
Able to drive vehicle
Diagnostic code No.
21
Tool display
Clutch switch
• “ON” (when the clutch lever is squeezed with the transmission in gear)
• “OFF” (when the clutch lever is released with the transmission in gear)
Procedure
Operate the transmission and clutch lever.
Item
Probable cause of malfunc-
tion and check
Maintenance job
Confirmation of service com-
pletion
C-1
Locate the malfunction.
Execute the diagnostic mode.
(Code No. 07)
Rotate the rear wheel by hand
and check that the indicated val-
ue increases.
Value does not increase
→
Go
to item A-2 for the speed sen-
sor.
Execute the diagnostic mode.
(Code No. 21)
When the transmission is in
neutral: “ON”
When the transmission is in
gear with the clutch lever re-
leased: “OFF”
Incorrect indication
→
Go to
item B-2 for the gear position
switch.
When the transmission is in
gear with the clutch lever
squeezed: “ON”
Incorrect indication
→
Go to
item C-2.
Fault code No.
42
Item
A
Speed sensor: no normal signals are received from the speed
sensor.
B
Gear position switch: open or short circuit is detected.
C
Clutch switch: open or short circuit is detected.
Summary of Contents for YZF-R25
Page 1: ......
Page 2: ......
Page 3: ......
Page 6: ......
Page 8: ......
Page 25: ...BASIC SERVICE INFORMATION 1 16 ...
Page 32: ...SPECIAL TOOLS 1 23 ...
Page 49: ...TIGHTENING TORQUES 2 16 2 6 8 5 4 1 2 6 3 7 2 10 9 A ...
Page 66: ...COOLING SYSTEM DIAGRAMS 2 33 EAS20020 COOLING SYSTEM DIAGRAMS 1 2 3 1 5 4 4 ...
Page 99: ......
Page 128: ...PERIODIC MAINTENANCE 3 29 ...
Page 146: ...GENERAL CHASSIS 5 4 15 1 b b a a 2 ...
Page 200: ...FRONT FORK 4 69 2 b a 1 ...
Page 209: ...SWINGARM AND REAR SHOCK ABSORBER ASSEMBLY 4 78 2 1 1 1 a A B ...
Page 214: ...CHAIN DRIVE 4 83 ...
Page 256: ...CYLINDER AND PISTONS 5 39 1 ...
Page 310: ...TRANSMISSION 5 93 ...
Page 322: ...WATER PUMP 6 11 ...
Page 336: ...THROTTLE BODIES 7 13 c 1 cylinder d 2 cylinder A Left B Right b a d c A B b 1 ...
Page 337: ...THROTTLE BODIES 7 14 ...
Page 338: ...AIR INDUCTION SYSTEM 7 15 EAS20071 AIR INDUCTION SYSTEM 1 2 3 4 5 1 2 ...
Page 342: ...AIR INDUCTION SYSTEM 7 19 ...
Page 345: ......
Page 355: ...ELECTRIC STARTING SYSTEM 8 10 ...
Page 359: ...CHARGING SYSTEM 8 14 ...
Page 371: ...SIGNALING SYSTEM 8 26 ...
Page 417: ...FUEL PUMP SYSTEM 8 72 ...
Page 420: ...ELECTRICAL COMPONENTS 8 75 2 3 4 5 12 11 10 9 8 7 1 6 ...
Page 440: ...ELECTRICAL COMPONENTS 8 95 ...
Page 451: ...SELF DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE 9 10 ...
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Page 454: ......