Yamaha XV1700P Service Manual page 406

Code No. Symptom
Atmospheric pressure sensor - open
or short circuit detected.
23
Intake air pressure sensor 2 - open or
short circuit detected.
25
Faulty intake air pressure sensor pipe
system 2; a hose is detached, caus-
ing constant application of the atmo-
spheric pressure to the sensor; or, the
hose is clogged.
26
Or, intake air pressure sensor - open
or short circuit detected.
Or, a stuck throttle position sensor is
detected.
Oil temperature sensor - open or
short circuit detected.
27
Engine temperature sensor - open or
short circuit detected.
28
Decompression solenoid (thermistor)
- open or short circuit detected.
29
The motorcycle has overturned.
30
A faulty linear control valve or motor is
detected.
37
Decompression solenoid - open or
short circuit detected.
38
Lean angle cut-off switch - open or
short circuit detected.
41
No normal signals are received from
the speed sensor; or, an open or
short circuit is detected in the neutral
42 switch.
The ECU is unable to monitor the bat-
43 tery voltage (an open circuit in the
monitor line to the ECU).
Faulty ECU memory. When this mal-
50 function is detected, the code number
might not appear on the meter.
FUEL INJECTION SYSTEM
Probable cause of malfunction
• Open or short circuit in wiring harness.
• Defective atmospheric pressure sensor.
• Improperly installed sensor.
• Malfunction in ECU.
• Open or short circuit in wiring sub lead.
• Open or short circuit in wiring harness.
• Defective intake air pressure sensor.
• Malfunction in ECU.
• Intake air pressure sensor hose is detached, clogged,
kinked, or pinched.
• Malfunction of the intake air pressure sensor in the interme-
diate electrical potential.
• Malfunction of the atmospheric pressure sensor in the inter-
mediate electrical potential.
• Malfunction in ECU.
• Open or short circuit in wiring sub lead.
• Open or short circuit in wiring harness.
• Defective intake air pressure sensor.
• Malfunction in ECU.
• Open or short circuit in wiring sub lead.
• Open or short circuit in wiring harness.
• Defective sensor (stuck throttle position sensor).
• Open or short circuit in wiring harness.
• Defective oil temperature sensor.
• Malfunction in ECU.
• Improperly installed sensor.
• Open or short circuit in wiring harness.
• Defective engine temperature sensor.
• Malfunction in ECU.
• Improperly installed sensor.
• Open or short circuit in wiring harness.
• Defective decompression solenoid (thermistor).
• Malfunction in ECU.
• Improperly installed sensor.
• Overturned.
• Malfunction in ECU.
• Open or short circuit in wiring harness.
• Defective linear control valve.
• Malfunction in ECU.
• Improperly installed linear control valve.
• Open or short circuit in wiring harness.
• Defective decompression solenoid.
• Malfunction in ECU.
• Improperly installed sensor.
• Open or short circuit in wiring harness.
• Defective lean angle cut-off switch.
• Malfunction in ECU.
• Improperly installed sensor.
• Open or short circuit in wiring harness.
• Defective speed sensor.
• Malfunction in vehicle speed sensor detected unit.
• Defective neutral switch.
• Malfunction in the engine side of the neutral switch.
• Malfunction in ECU.
• Improperly installed sensor.
• Open circuit in wiring harness.
• Malfunction in ECU.
• Malfunction in ECU. (The program and data are not properly
written on or read from the internal memory.)
6 - 13
FI
Diagnostic code
02
02
03
02
03
01
10
11
55
08
10
54
55
08
07
21
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