2004 YAMAHA YZF-R1S oil level

8-53
SELF-DIAGNOSISELEC
SELF-DIAGNOSIS
The YZF-R1(S) features a self-diagnosing system for the following circuit(-s):

Fuel pump thermistor

Oil level switch
If any of these circuits are defective, their respective condition codes will be displayed on the warning
light when the main switch is turned “ON” (irrespective of whether the engine is running or not).
Circuit
Defect(-s)System responseCondition code
Fuel pump
thermistor
Open-circuit

Short-circuit
The fuel level warning light indi-
cate the condition code.Refer to *1
Oil level switch
Open-circuit

Short-circuit
The oil level warning light indicate
the condition code.Refer to *2
*1Condition code
Fuel level warning light
*
2Condition code
Oil level warning light
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8-54
SELF-DIAGNOSISELEC
L/B B
Lg
B
BG/W
B R/L
Y/LY/BR/G
Sb/W
W
G/W
G/W
R/L
B
R/W
LgLgB
Sb/WSb/WA
Br BrA
R/G R/GBB/R B/RBY/B Y/BBY/L Y/LBG/W G/WA
GY
14
3839
40
41
42
43
44
45
Repair or replace the
wire harness.
NO
1. Wire harness

Check the wire harness for continuity.
Refer to “CIRCUIT DIAGRAM”.

Is the wire harness OK?
YES
NO
2. Fuel pump thermistor

Check the fuel pump thermistor for continuity.
Refer to “The fuel level warning light fails to
come on”.

Is the fuel pump thermistor OK?
YES
Replace the fuel
pump.Replace the multi-
function meter.
NOTE:
14Fuel pump
45Multi-function meter
TROUBLESHOOTING
The warning light starts to indicate the
self-diagnosis sequence.
Check:
1. fuel pump thermistor
2. oil level switch

Before troubleshooting, remove the following
part(-s):
1. seat
2. fuel tank

Troubleshoot with the following special
tool(-s).
Pocket tester
90890-03112, YU-3112
1. Fuel pump thermistor
CIRCUIT DIAGRAM
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8-55
SELF-DIAGNOSISELEC
Replace the oil level
switch.
NO
2. Oil level switch

Check the oil level switch for continuity.
Refer to “The oil level warning light fails to
come on”.

Is the oil level switch OK?
YES
Repair or replace the
wire harness.
NO
1. Wire harness

Check the wire harness for continuity.
Refer to “CIRCUIT DIAGRAM”.

Is the wire harness OK?
YES
Replace the multi-
function meter.
B/WWW
Y/LY/BR/G
Sb/W
W
WG/W
R/WSb/WSb/WA
Br BrA
R/G R/GBB/R B/RBY/B Y/BBY/L Y/L
Dg
Ch
BG/W G/WA
B/W B/W
GY
B
40
41
42
43
44
45
46
47
48
49
50
51
52
45Multi-function meter
52Oil level switch
2. Oil level switch
CIRCUIT DIAGRAM
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9-3
FAULTY GEAR SHIFTING / FAULTY CLUTCH
TRBL
SHTG
JUMPS OUT OF GEAR
Shift shaft

Incorrect shift pedal position

Improperly returned stopper lever
Shift forks

Worn shift fork
Shift drum

Incorrect axial play

Worn shift drum groove
Transmission

Worn gear dog
CLUTCH DRAGS
Clutch

Unevenly tensioned clutch springs

Warped pressure plate

Bent clutch plate

Swollen friction plate

Bent clutch pull rod

Broken clutch boss

Burnt primary driven gear bushing

Match marks not aligned
Engine oil

Incorrect oil level

Incorrect oil viscosity (high)

Deteriorated oil
EAS00850
FAULTY GEAR SHIFTING
SHIFTING IS DIFFICULT
Refer to “CLUTCH DRAGS”.
SHIFT PEDAL DOES NOT MOVE
Shift shaft

Improperly adjusted shift rod

Bent shift shaft.
Shift drum and shift forks

Foreign object in a shift drum groove

Seized shift fork

Bent shift fork guide bar
Transmission

Seized transmission gear

Foreign object between transmission gears

Improperly assembled transmission
EAS00851
FAULTY CLUTCH
CLUTCH SLIPS
Clutch

Improperly assembled clutch

Improperly adjusted clutch cable

Loose or fatigued clutch spring

Worn friction plate

Worn clutch plate
Engine oil

Incorrect oil level

Incorrect oil viscosity (low)

Deteriorated oil
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9-4
OVERHEATING / OVERCOOLING /
POOR BRAKING PERFORMANCETRBL
SHTG
FUEL SYSTEM
Throttle body (-ies)

Damaged or loose throttle body joint
Air filter

Clogged air filter element
CHASSIS
Brake(s)

Dragging brake
ELECTRICAL SYSTEMS
Spark plug(s)

Incorrect spark plug gap

Incorrect spark plug heat range
Ignition system

Faulty E.C.U.

Loose union bolt

Damaged brake hose

Oil or grease on the brake disc

Oil or grease on the brake pad

Incorrect brake fluid level
EAS00855
OVERHEATING
ENGINE
Clogged coolant passages

Cylinder head(s) and piston(s)

Heavy carbon buildup
Engine oil

Incorrect oil level

Incorrect oil viscosity

Inferior oil quality
COOLING SYSTEM
Coolant

Low coolant level
Radiator

Damaged or leaking radiator

Faulty radiator cap

Bent or damaged radiator fin
Water pump

Damaged or faulty water pump

Thermostat

Thermostat stays closed

Oil cooler

Clogged or damaged oil cooler

Hose(s) and pipe(s)

Damaged hose

Improperly connected hose

Damaged pipe

Improperly connected pipe
EAS00856
OVERCOOLING
COOLING SYSTEM
Thermostat

Thermostat stays open
EAS00857
POOR BRAKING PERFORMANCE

Worn brake pad

Worn brake disc

Air in hydraulic brake system

Leaking brake fluid

Faulty brake caliper kit

Faulty brake caliper seal
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9-5
FAULTY FRONT FORK LEGS / UNSTABLE HANDLING
TRBL
SHTG
MALFUNCTION

Bent or damaged inner tube

Bent or damaged outer tube

Damaged fork spring

Worn or damaged outer tube bushing

Bent or damaged damper rod

Incorrect oil viscosity

Incorrect oil level
Rear shock absorber assembly(-ies)

Faulty rear shock absorber spring

Leaking oil or gas
Tire(s)

Uneven tire pressures (front and rear)

Incorrect tire pressure

Uneven tire wear
Wheel(s)

Incorrect wheel balance

Deformed cast wheel

Damaged wheel bearing

Bent or loose wheel axle

Excessive wheel runout
Frame

Bent frame

Damaged steering head pipe

Improperly installed bearing race
EAS00861
FAULTY FRONT FORK LEGS
LEAKING OIL

Bent, damaged or rusty inner tube

Cracked or damaged outer tube

Improperly installed oil seal

Damaged oil seal lip

Incorrect oil level (high)

Loose damper rod assembly bolt

Damaged damper rod assembly bolt
copper washer

Cracked or damaged cap bolt O-ring
EAS00863
UNSTABLE HANDLING
Handlebars

Bent or improperly installed right handlebar

Bent or improperly installed left handlebar
Steering head components

Improperly installed upper bracket

Improperly installed under bracket
(improperly tightened ring nut)

Bent steering stem

Damaged ball bearing or bearing race
Front fork leg(s)

Uneven oil levels (both front fork legs)

Unevenly tensioned fork spring (both front
fork legs)

Broken fork spring

Bent or damaged inner tube

Bent or damaged outer tube
Swingarm

Worn bearing or bushing

Bent or damaged swingarm
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59Clutch switch
60Turn signal switch
61Horn
62Front turn signal / position light (left)
63Front turn signal / position light (right)
64Rear turn signal light (left)
65Rear turn signal light (right)
66Headlight
67Auxiliary light
68License plate light
69Rear brake light switch
70Tail / brake light
71Headlight relay (on / off)
72Headlight relay (dimmer)
73Fuse (ignition)
74Fuse (signal)
75Fuse (headlight)
76Radiator fan motor relay
77Fuse (radiator fan motor left)
78Fuse (radiator fan motor light)
79Radiator fan motor 2
80Radiator fan motor 1
81Ground
COLOR CODE
B Black. . . . .
Br Brown. . . .
Ch Chocolate. . .
Dg Dark green. . .
G Green. . . .
Gy Gray. . .
L Blue. . . . .
Lg Light green. . . .
O Orange. . . .
P Pink. . . . .
R Red. . . . .
Sb Sky blue. . . .
W White. . . .
Y Yellow. . . . .
B / G Black / Green. .
B / L Black / Blue. . .
B / R Black / Red. .
B / W Black / White. .
B / Y Black / Yellow. .
Br / G Brown / Green.
Br / L Brown / Blue. .
Br / R Brown / Red. .
Br / W Brown / White.
G / B Green / Black. .
G / R Green / Red. .
G / W Green / White. . G / Y Green / Yellow. .
Gy / B Gray / Black.
Gy / G Gray / Green.
Gy / R Gray / Red.
L / B Blue / Black. . .
L / R Blue / Red. .
L / W Blue / White. .
L / Y Blue / Yellow. . .
O / B Orange / Black. .
O / G Orange / Green. .
P / W Pink / White. .
R / B Red / Black. .
R / G Red / Green. .
R / L Red / Blue. .
R / W Red / White. .
R / Y Red / Yellow. .
Sb / W Sky blue / White.
W / B White / Black. .
W / R White / Red. .
W / Y White / Yellow. .
Y / B Yellow / Black. .
Y / G Yellow / Green. .
Y / L Yellow / Blue. . .
Y / R Yellow / Red. .
Y / W Yellow / White. .
YZF-R1S / YZF-R1SC WIRING DIAGRAM
1Main switch
2A.C. magneto
3Rectifier / regulator
4Fuse (main)
5Fuse (backup)
6Battery
7Fuse (fuel injection)
8Starter relay
9Starter motor
10Starting circuit cut-off relay
11Neutral switch
12Sidestand switch
13Fuel pump
14E.C.U
15Ignition coil #1
16Ignition coil #2
17Ignition coil #3
18Ignition coil #4
19Spark plug
20Injector #1
21Injector #2
22Injector #3
23Injector #4
24Air induction system solenoid
25Sub-throttle position sensor
26EXUP servo motor
27Speed sensor
28Coolant temperature sensor
29Intake air temperature sensor
30Option switch
31Crankshaft position sensor
32Throttle position sensor
33Intake air pressure sensor
34Atmospheric pressure sensor
35Cylinder identification sensor
36Lean angle cut-off switch
37Meter assembly
38Fuel level warning light
39Oil level warning light
40Neutral indicator light
41Tacho meter
42Shift timing indicator light
43Multi function meter
44Engine trouble warning light
45Coolant temperature indicator light
46Hi beam indicator light
47Turn signal indicator light (left)
48Turn signal indicator light (light)
49Meter light
50Oil level switch
51Right handlebar switch
52Front brake light switch
53Engine stop switch
54Start switch
55Turn signal relay
56Left handlebar switch
57Dimmer switch
58Horn switch
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