2004 YAMAHA YZF-R1S warning light
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7-12
FUEL INJECTION SYSTEMFI
NOTE: Diagnostic mode table
Switch the meter display from the regular mode to the diagnosis mode. To switch the display, refer to
“DIAGNOSTIC MODE”.
Check the intake air temperature and coolant temperature as close as possible to the intake air tem-
perature sensor and the coolant temperature sensor respectively.
If it is not possible to check it with an atmospheric pressure gauge, judge it by using 101.3 kPa as the
standard.
If it is not possible to check the intake air temperature, use the ambient temperature as reference.
Diagnostic
codeItemDescription of actionData displayed on meter
(reference value)
01
Throttle angleDisplays the throttle angle.
Check with throttle fully closed.
Check with throttle fully open.0 125 degrees
Fully closed position (15 18)
Fully open position (95 100)
02
Atmospheric
pressureDisplays the atmospheric pressure.
* Use an atmospheric pressure gauge to check the
atmospheric pressure.Compare it to the value
displayed on the meter.
03
Intake air pressureDisplays the intake air pressure.
Engine stop switch is on.
* Generate the pressure difference by cranking the engine
with the starter, without actually starting the engine.Not cranking-atmospheric
pressure
Cranking-intake air pressure It
changes at the value whitch is
smaller than in the atomo-
spheric pressure.
05Intake temperatureDisplays the intake air temperature.
* Check the temperature in the air cleaner case.Compare it to the value
displayed on the meter.
06Coolant temperatureDisplays the coolant temperature.
* Check the temperature of the coolant.Compare it to the value
displayed on the meter.
07
Vehicle speed pulseDisplays the accumulation of the vehicle pulses that are
generated when the tire is spun.(0 999; resets to 0 after 999)
OK if the numbers appear on
the meter.
08Lean angle cut-off
switchDisplays the lean angle cut-off switch values.Upright: 0.4 1.4 V
Overturned: 3.7 4.4 V
09Fuel system voltage
(battery voltage)Displays the fuel system voltage (battery voltage).
Engine stop switch is on.0 18.7 V
Normally, approximately 12.0 V
20Sidestand switchDisplays that the switch is ON or OFF. (When the gear is in a
position other than neutral.)Stand retracted: ON
Stand extended: OFF
21Neutral switchDisplays that the switch is ON or OFF.Neutral: ON
In gear: OFF
30
Ignition coil #1After the engine stop switch has been turned from OFF to
ON, it actuates ignition coil #1 for five times every second
and illuminates the engine trouble warning light.
* Connect an ignition checker.
* If the engine stop switch is ON, turn it OFF once, and then
turn it back ON.Check that spark is generated,
5 times with the engine stop
switch ON.
31
Ignition coils #2After the engine stop switch has been turned from OFF to
ON, it actuates ignition coil #2 for five times every second
and illuminates the engine trouble warning light.
* Connect an ignition checker.
* If the engine stop switch is ON, turn it OFF once, and then
turn it back ON.Check that spark is generated,
5 times with the engine stop
switch ON.
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7-13
FUEL INJECTION SYSTEMFI
Diagnostic
codeItemDescription of actionData displayed on meter
(reference value)
32
Ignition coil #3After the engine stop switch has been turned from OFF to
ON, it actuates ignition coil #3 for five times every second
and illuminates the engine trouble warning light.
* Connect an ignition checker.
* If the engine stop switch is ON, turn it OFF once, and then
turn it back ON.Check that spark is generated,
5 times with the engine stop
switch ON.
33
Ignition coil #4After the engine stop switch has been turned from OFF to
ON, it actuates ignition coil #4 for five times every second
and illuminates the engine trouble warning light.
* Connect an ignition checker.
* If the engine stop switch is ON, turn it OFF once, and then
turn it back ON.Check that spark is generated,
5 times with the engine stop
switch ON.
36
Injector #1After the engine stop switch has been turned from OFF to
ON, it actuates the injector #1 five times every second and
illuminates the engine trouble warning light.
* If the engine stop switch is ON, turn it OFF once, and then
turn it back ON.Check the operating sound of
the injector five times with
engine stop switch ON.
37
Injector #2After the engine stop switch has been turned from OFF to
ON, it actuates the injector #2 five times every second and
illuminates the engine trouble warning light.
* If the engine stop switch is ON, turn it OFF once, and then
turn it back ON.Check the operating sound of
the injector five times with
engine stop switch ON.
38
Injector #3After the engine stop switch has been turned from OFF to
ON, it actuates the injector #3 five times every second and
illuminates the engine trouble warning light.
* If the engine stop switch is ON, turn it OFF once, and then
turn it back ON.Check the operating sound of
the injector five times with
engine stop switch ON.
39
Injector #4After the engine stop switch has been turned from OFF to
ON, it actuates the injector #4 five times every second and
illuminates the engine trouble warning light.
* If the engine stop switch is ON, turn it OFF once, and then
turn it back ON.Check the operating sound of
the injector five times with
engine stop switch ON.
48
AI system solenoidAfter the engine stop switch has been turned from OFF to
ON, it actuates the AI system solenoid five times every
second and illuminates the engine trouble warning light.
* If the engine stop switch is ON, turn it OFF once, and then
turn it back ON.Check the operating sound of
the AI system solenoid 5 times
with the engine stop
switch ON.
50
Fuel injection system
relayAfter the engine stop switch has been turned from OFF to
ON, it actuates the fuel injection system relay five times
every second and illuminates the engine trouble warning
light (the light is OFF when the relay is ON, and the light is
ON when the relay is OFF).
* If the engine stop switch is ON, turn it OFF once, and then
turn it back ON.Check the fuel injection system
relay operating sound 5 times
with the engine stop
switch ON.
51
Radiator fan motor
relayAfter the engine stop switch has been turned from OFF to
ON, it actuates the radiator fan motor relay five times every
5 seconds and illuminates the engine trouble warning light.
(ON 2 seconds, OFF 3 seconds)
* If the engine stop switch is ON, turn it OFF once, and then
turn it back ON.Check the radiator fan motor
relay operating sound 5 times
with the engine stop
switch ON.
(At that time, the fan motor
rotates.)
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7-14
FUEL INJECTION SYSTEMFI
Diagnostic
codeItemDescription of actionData displayed on meter
(reference value)
52
Headlight relay 1After the engine stop switch has been turned from OFF to
ON, it actuates the headlight relay five times every
5 seconds and illuminates the engine trouble warning light.
(ON 2 seconds, OFF 3 seconds)
* If the engine stop switch is ON, turn it OFF once, and then
turn it back ON.Check the headlight relay
operating sound 5 times with the
engine stop switch ON.
(At that time, the headlight turns
ON.)
53
EXUP servo motorAfter the engine stop switch has been turned from OFF to
ON, it actuates the servo motor turns to open side and to
close side.
* If the engine stop switch is ON, turn it OFF once, and then
turn it back ON.Turn on the engine trouble
warning light while servo motor
is operated. (Operating angle is
displayed on the LCD meter)
56
Sub-throttle servo
motorAfter the engine stop switch has been turned from OFF to
ON, it actuates the servo motor turns to open side and to
close side.
* If the engine stop switch is ON, turn it OFF once, and then
turn it back on.Turn on the engine trouble warn-
ing light while servo motor is op-
erated (Operating angle is dis-
played on the LCD meter).
60
EEPROM fault code
displayTransmits the abnormal portion of the data in the E2PROM
that has been detected as a self-diagnostic fault code 44.
If multiple malfunctions have been detected, different
codes are displayed at 2-second intervals, and this
process is repeated.(01 04) Displays the cylinder
number.
(00) Displays when there is no
malfunction.
61
Malfunction history
code displayDisplays the codes of the history of the self-diagnosis
malfunctions (i.e., a code of a malfunction that occurred
once and which has been corrected).
If multiple malfunctions have been detected, different
codes are displayed at 2-second intervals, and this
process is repeated.11 50
(00) Displays when there is no
malfunction.
62
Malfunction history
code erasureDisplays the total number of codes that are being detected
through self diagnosis and the fault codes in the past
history.
Erases only the history codes when the engine stop switch
is turned from OFF to ON. If the engine stop switch is ON,
turn it OFF once, and then turn it back ON.00 25
(00) Displays when there is no
malfunction.
70Control numberDisplays the program control number.00 255
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8-5
CHECKING THE BULBS AND BULB SOCKETSELEC
WARNING
EAS00732
CHECKING THE BULBS AND
BULB SOCKETS
Check each bulb and bulb socket for damage or
wear, proper connections, and also for continu-
ity between the terminals.
Damage / wear Repair or replace the bulb,
bulb socket or both.
Improperly connected Properly connect.
No continuity Repair or replace the bulb, bulb
socket or both.
TYPES OF BULBS
The bulbs used on this motorcycle are shown in
the illustration on the left.
Bulbs
A and B are used for the headlights
and usually use a bulb holder that must be
detached before removing the bulb. The ma-
jority of these types of bulbs can be removed
from their respective socket by turning them
counterclockwise.
Bulbs
C are used for turn signal and
tail / brake lights and can be removed from
the socket by pushing and turning the bulb
counterclockwise.
CHECKING THE CONDITION OF THE
BULBS
The following procedure applies to all of the
bulbs.
1. Remove:
bulb
Since the headlight bulb gets extremely
hot, keep flammable products and your
hands away from the bulb until it has
cooled down.
When changing the tail / brake light bulb,
confirm that the frame has cooled accord-
ing to the warning label and change the
tail / brake light bulb.
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8-7
CHECKING THE BULBS AND BULB SOCKETSELEC
NOTE:
NOTE:
WARNING
Pocket tester
90890-03112, YU-3112
Check each bulb socket for continuity in the
same manner as described in the bulb section;
however, note the following.
a. Install a good bulb into the bulb socket.
b. Connect the pocket tester probes to the re-
spective leads of the bulb socket.
c. Check the bulb socket for continuity. If any of
the readings indicate no continuity, replace
the bulb socket.
CHECKING THE LEDs
The following procedures applies to all of the
LEDs.
1. Check:
LED (for proper operation)
Improper operation Replace.
a. Disconnect the meter assembly coupler (me-
ter assembly side).
b. Connect two jumper leads
1 from the bat-
tery terminals to the respective coupler ter-
minal.
As for connecting with which coupler terminal,
refer to “CABLE ROUTING” in chapter 2.
A wire that is used as a jumper lead must
have at least the same capacity of the bat-
tery lead, otherwise the jumper lead may
burn.
This check is likely to produce sparks,
therefore, make sure no flammable gas or
fluid is in the vicinity.
c. When the jumper leads are connected to the
terminals the respective LED should illumi-
nate.
Does not light Replace the meter assem-
bly.
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8-35
SIGNALING SYSTEMELEC
1Main switch
4Fuse (main)
6Battery
10Starting circuit cut-off relay
11Neutral switch
13Fuel pump
14E.C.U.
27Speed sensor
38Fuel level warning light
39Oil level warning light
40Neutral indicator light
41Tachometer
42Shift timing indicator light
43Multi function meter
45Coolant temperature indicator light
47Turn signal indicator light (left)
48Turn signal indicator light (light)
55Turn signal relay
58Horn 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)
73Fuse (ignition)
74Fuse (signal)
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8-40
SIGNALING SYSTEMELEC
YESNO
Replace the starting
circuit cut-off relay.
YESNO 4. Voltage
Connect the pocket tester (DC 20 V) to the
meter assembly coupler (wire harness side)
as shown.
The wiring circuit
from the main switch
to the meter assem-
bly coupler is faulty
and must be re-
paired. Positive tester probe brown
Negative tester probe ground
1
Turn the main switch to “ON”.
Measure the voltage (DC 12 V) of brown
at the meter assembly coupler (wire harness
side).
Is the voltage within specification?
This circuit is OK.
Are the tester readings correct?
YESNO 1. Oil level warning light (LEDs)
Check the oil level warning light for continu-
ity.
When the main switch is turn to “ON”, the oil
level warning light is come on.
Are the oil level warning light OK?
Replace the meter
assembly.
EAS00802
5. The oil level warning light fails to come on.
YESNO 2. Oil level switch
Drain the engine oil and remove the oil level
switch from the oil pan.
Connect the pocket tester (Ω 100) to the
oil level switch as shown.
Replace the oil level
switch. Positive tester probe
Connector (white)
Negative tester probe Body ground
1
12
Measure the oil level switch resistance.
Oil level switch resistance
114 126 Ω at 20C (68F)
484 536 Ω at 20C (68F)
1
2
Is the oil level switch OK?
2
When you switch the positive and negative
tester probes, the readings in the above
chart will be reversed.
NOTE:
1
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8-41
SIGNALING SYSTEMELEC
3. Voltage
Connect the pocket tester (DC 20 V) to the
meter assembly coupler (wire harness side)
as shown.
Positive tester probe black / red
Negative tester probe black / white
1
2
Turn the main switch to “ON”.
Measure the voltage (DC 12V) of black /
red and black / white at the meter as-
sembly coupler.
Is the voltage within specification?
12
YESNO
The wiring circuit
from the main switch
to the meter assem-
bly is faulty and must
be repaired.
This circuit is OK.
EAS00803
6. The fuel level warning light fails to come on.
1. Fuel sender
Drain the fuel from the fuel tank and remove
the fuel pump from the fuel tank.
Disconnect the fuel sender coupler from the
wire harness.
Connect the pocket tester (Ω 10) to the
fuel sender terminals as shown.
Positive tester probe green / white
Negative tester probe black
1
2
Fuel sender resistance
Full position of the float
20 26 Ω at 20C (68F)
Empty position of the float
134 140 Ω at 20C (68F)
Is the fuel sender OK? Measure the resistances when the float arm
is in contact with the full position and empty
position of the stopper.
NOTE: Measure the fuel sender resistances.
YESNO
Replace the fuel
pump.
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