turn signal YAMAHA YZF-R1S 2004 User Guide

7-10
FUEL INJECTION SYSTEMFI
Diagnostic fault code table
Fault
code No.SymptomProbable cause of malfunctionDiagnostic
code
11
No normal signals are received from
the cylinder identification sensor.
Open or short circuit in wiring sub lead.

Open or short circuit in wiring harness.

Defective cylinder identification sensor.

Malfunction in ECU.

Improperly installed sensor.
—
12
No normal signals are received from
the crankshaft position sensor.
Open or short circuit in wiring harness.

Defective crankshaft position sensor.

Malfunction in pickup rotor.

Malfunction in ECU.

Improperly installed sensor.
—
13
Intake air pressure sensor-open or
short circuit detected.
Open or short circuit in wiring sub lead.

Open or short circuit in wiring harness.

Defective intake air pressure sensor.

Malfunction in ECU.
03
14
Faulty intake air pressure sensor hose
system; a hose is detached, causing
constant application of the
atmospheric pressure to the sensor;
or, the hose is clogged.
Intake air pressure sensor hose is detached, clogged,
kinked, or pinched.

Malfunction in ECU.
03
15
Throttle position sensor-open or
short circuit detected.
Open or short circuit in wiring sub lead.

Open or short circuit in wiring harness.

Defective throttle position sensor.

Malfunction in ECU.

Improperly installed throttle position sensor.
01
16A stuck throttle position sensor is
detected.
Stuck throttle position sensor.

Malfunction in ECU.01
17EXUP servo motor potention
circuit-open or short circuit detected.
Open or short circuit in wiring sub lead.

Detective EXUP servo motor (potention circuit).53
18EXUP servo motor is stuck.
Open or short circuit in wiring sub lead.

Stuck EXUP servo motor (mechanism).

Stuck EXUP servo motor (motor).53
19Open circuit in the input line of ECU
No.15 terminal is detected when the
start switch is pressed.
Open circuit in wiring harness (ECU Coupler).

Malfunction in ECU.20
20
When the main switch is turned to ON,
the atmospheric sensor voltage and
intake air pressure sensor voltage
differ greatly.
Atmospheric pressure sensor hose is clogged.

Intake air pressure sensor hose is clogged, kinked, or pinched.

Malfunction of the atmospheric pressure sensor in the
intermediate electrical potential.

Malfunction of the intake air pressure sensor in the
intermediate electrical potential.

Malfunction in ECU.
03
02
21Coolant temperature sensor-open or
short circuit detected.
Open or short circuit in wiring harness.

Defective coolant temperature sensor.

Malfunction in ECU.06
22Intake temperature sensor-open or
short circuit detected.
Open or short circuit in wiring harness.

Defective intake temperature sensor.

Malfunction in ECU.05
23Atmospheric pressure sensor-open or
short circuit detected.
Open or short circuit in wiring sub lead.

Defective atmospheric pressure sensor.

Malfunction in ECU.02
30The motorcycle has overturned.
Overturned.

Malfunction in ECU.08
33
Open circuit is detected in the primary
lead of the ignition coil (#1).
Open or short circuit in wiring harness.

Malfunction in ignition coil.

Malfunction in ECU.

Malfunction in a component of ignition cut-off circuit system.
30
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FUEL INJECTION SYSTEMFI
Fault code No.Er-1SymptomNo signal are received from the ECU.
Er-2SymptomNo signal are received from the ECU within the specified duration.
Er-3SymptomData from the ECU cannot be received correctly.
Er-4SymptomNon-registered data has been received from the meter.
Used diagnostic code No. – –
OrderInspection operation item and probable
causeOperation item and countermeasureReinstatement
method
1Connected condition of connector
Inspect the coupler for any pins that
may have pulled out.
Check the locking condition of the
coupler.If there is a malfunction, repair it and connect it
securely.
Cylinder identification sensor coupler
Main wiring harness ECU coupler
Sub-wire harness couplerReinstated by
turning the
main switch
ON.
2Open or short circuit in wiring harness
and / or sub lead.Repair or replace if there is an open or short
circuit.
Between sensor coupler and ECU coupler
Yellow / Blue – Yellow / Blue
Black / White – Black / White
3Malfunction in meterReplace the meter.
4Malfunction in ECUReplace the ECU.
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8-2
9Radiator fan motor relay
10Turn signal relay
11Rectifier / regulator
12Throttle position sensor
13Sub-throttle position sensor
1Coolant temperature sensor
2Intake air temperature sensor
3Intake air pressure sensor
4Fuel pump
5ECU
6Lean angle cut-off switch
7Starting circuit cut-off relay
8Headlight relay (dimmer)
ELECTRICAL COMPONENTSELEC
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8-4
11Neutral switch
12Rear brake light switch
13Fuse box
1Main switch
2Horn switch
3Dimmer switch
4Turn signal switch
5Clutch switch
6Sidestand switch
7Engine stop switch
8Front brake light switch
9Start switch
10Oil level switch
CHECKING THE SWITCHESELEC
EAS00731
CHECKING THE SWITCHES
Check each switch for damage or wear, proper connections, and also for continuity between the termi-
nals. Refer to “CHECKING SWITCH CONTINUITY”.
Damage / wear
Repair or replace.
Improperly connected
Properly connect.
Incorrect continuity reading
Replace the switch.
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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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8-28
LIGHTING SYSTEMELEC
1Main switch
4Fuse (main)
6Battery
14E.C.U.
46Hi beam indicator light
49Meter light
57Dimmer switch
62Front turn signal/position light (left)
63Front turn signal/position light (right)
66Headlight
67Auxiliary light
68License plate light
69Rear brake light switch
70Tail/brake light
71Headlight relay (on / off)
72Headlight relay (dimmer)
74Fuse (signal)
75Fuse (headlight)
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8-33
LIGHTING SYSTEMELEC
EAS00791
4. The auxiliary light fails to come on.
YESNO 1. Auxiliary light and socket

Check the auxiliary light bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.

Are the auxiliary light .bulb and socket OK?
Replace the auxiliary
light bulb, socket or
both.
YESNO 2. Voltage

Connect the pocket tester (DC 20 V) to the
auxiliary light coupler (auxiliary light side) as
shown.
The wiring circuit
from the main switch
to the auxiliary light
coupler is faulty and
must be repaired. Positive tester probe
blue / red
Negative tester probe
black
1

Turn the main switch to “ON”.

Measure the voltage (DC 12 V) of blue / red
on the auxiliary light coupler (auxiliary
light side).

Is the voltage within specification?
2
This circuit is OK.
2
5. The turn signa l/ position light fails to come on.
YESNO 1. Turn signal / position light and socket

Check the turn signal / position light bulb and
socket for continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.

Are the turn signal / position light bulb and
socket OK?
Replace the turn sig-
nal / position light
bulb, socket or both.
YESNO 2. Voltage

Connect the pocket tester (DC 20 V) to the
turn signal / position light coupler (wire har-
ness side) as shown.
The wiring circuit from
the main switch to the
turn signal / position
light coupler is faulty
and must be repaired.
Turn the main switch to “ON”.

Measure the voltage (DC 12 V) of blue or
blue on the turn signal / position light cou-
pler (wire harness side).

Is the voltage within specification?
3
This circuit is OK.
Left turn signal / position light
Positive tester probe
blue
Negative tester probe
black
Right turn signal / position light
Positive tester probe
blue
Negative tester probe
black
1
2
A
Left turn signal / position light
Right turn signal / position light
B
A
B
3
4
1
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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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8-36
YESNO

Clean the battery
terminals.

Recharge or re-
place the battery.
EAS00749
3. Main switch

Check the main switch for continuity.
Refer to “CHECKING THE SWITCHES”.

Is the main switch OK?
YESNO
Replace the main
switch.
YESNO 1. Horn switch

Check the horn switch for continuity.
Refer to “CHECKING THE SWITCHES”.

Is the horn switch OK?
Replace the left han-
dlebar switch.
EAS00796
CHECKING THE SIGNALING SYSTEM
1. The horn fails to sound.
EAS00795
4. Wiring

Check the entire signaling system’s wiring.
Refer to “CIRCUIT DIAGRAM”.

Is the signaling system’s wiring properly
connected and without defects?
YESNO
Properly connect or
repair the signaling
system’s wiring.
Check the condition
of each of the signal-
ing system’s circuits.
Refer to “CHECK-
ING THE LIGHTING
SYSTEM”.
SIGNALING SYSTEMELEC
NOTE:
YESNO
1. Backup, main, ignition, signal and park
fuses

Check the backup, main, ignition, signal and
park fuses for continuity.
Refer to “CHECKING THE FUSES” in chap-
ter 3.

Are the backup, main, ignition, signal and
park fuses OK?
Replace the fuse(s).
2. Battery

Check the condition of the battery.
Refer to “CHECKING AND CHARGING
THE BATTERY” in chapter 3.
Minimum open-circuit voltage
12.8 V or more at 20C (68F)

Is the battery OK?
EAS00739EAS00794
TROUBLESHOOTING

Any of the following fail to light: turn sig-
nal light, brake light or an indicator light.

The horn fails to sound.
Check:
1. backup, main, ignition, signal, and park
fuses
2. battery
3. main switch
4. wiring connections
(of the entire signaling system)

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

Troubleshoot with the following special tool(s).
Pocket tester
90890-03112, YU-3112
EAS00738
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8-37
SIGNALING SYSTEMELEC
YESNO 1. Tail / brake light bulb and socket

Check the tail / brake light bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.

Are the tail / brake light bulb and socket OK?
Replace the tail /
brake light bulb,
socket or both.
EAS007972. The tail / brake light fails to come on.
YESNO 2. Brake light switches

Check the brake light switches for continuity.
Refer to “CHECKING THE SWITCHES”.

Is the brake light switch OK?
Replace the brake
light switch.
3. Voltage

Connect the pocket tester (DC 20 V) to the
tail / brake light coupler (wire harness side)
as shown.
Positive tester probe
yellow
Negative tester probe
black
1
2

Turn the main switch to “ON”.

Pull in the brake lever or push down on the
brake pedal.

Measure the voltage (DC 12 V) of yellow
on the tail / brake light coupler (wire harness
side).

Is the voltage within specification?
1
YESNO 2. Voltage

Connect the pocket tester (DC 20 V) to the
horn connector at the horn terminal as
shown.
The wiring circuit
from the main switch
to the horn connec-
tor is faulty and must
be repaired. Positive tester probe
black / white
Negative tester probe
ground
1

Turn the main switch to “ON”.

Push the horn switch.

Measure the voltage (DC 12 V) of
black / white at the horn terminal.

Is the voltage within specification?
NOYES 3. Horn

Disconnect the black connector at the horn
terminal.

Connect a jumper lead to the horn termi-
nal and ground the jumper lead.

Turn the main switch to “ON”.

Push the horn switch.

Does the horn sound?
The horn is OK.
1
Replace the horn.
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