Yamaha YZF-R1P 2001-2003, Service Manual

Page: 348 / 439

7 - 7
FI
FUEL INJECTION SYSTEM
Diagnostic fault code table
Fault
Code No.
Symptom Probable cause of malfunction
Code of
diagnostic mode
11
No normal signals are received from
the cylinder identification sensor.
NOTE:
This code number appears if the con-
dition continued for 10 seconds in
which the starter motor does not run
even if the starter switch has been
pressed.
• 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
16
A stuck throttle position sensor is
detected. • Stuck throttle position sensor.
• Malfunction in ECU.
01
17
EXUP servo motor potention circuit-
open or short circuit detected. • Open or short circuit in wiring sub lead.
• Detected EXUP servo motor (potention circuit).
53
18
EXUP servo motor is stuck. • Open or short circuit in wiring sub lead.
• Stuck EXUP servo motor (mechanism).
• Stuck EXUP servo motor (motor).
53
19
Open circuit in the input line from the
sidestand switch to the ECU is
detected when the start switch is
pressed. • Open or short circuit in wiring harness.
• Malfunction in ECU.
20
20
When the main switch is turned to
ON, the atmospheric sensor voltage
and intake air pressure sensor volt-
age 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 inter-
mediate electrical potential.
• Malfunction of the intake air pressure sensor in the interme-
diate electrical potential.
• Malfunction in ECU.
03
02
21
Coolant temperature sensor - open or
short circuit detected. • Open or short circuit in wiring harness.
• Defective coolant temperature sensor.
• Malfunction in ECU.
• Improperly installed sensor.
06
22
Intake temperature sensor - open or
short circuit detected. • Open or short circuit in wiring harness.
• Defective intake temperature sensor.
• Malfunction in ECU.
• Improperly installed sensor.
05
23
Atmospheric pressure sensor - open
or short circuit detected. • Open or short circuit in wiring sub lead.
• Defective atmospheric pressure sensor.
• Improperly installed sensor.
• Malfunction in ECU.
02
30
The motorcycle has overturned. • Overturned.
• Malfunction in ECU.
08