Yamaha FX10X 2008, Service Manual

Page: 285 / 411

7-9
FI
FUEL INJECTION SYSTEM
Fault code table
Fault
code No.
Symptom Probable cause of malfunction Diagnostic code No.
12
No normal signals are
received from the crankshaft
position sensor. • Open or short circuit in wire harness.
• Defective crankshaft position sensor.
• Malfunction in pickup rotor (primary sheave drive shaft assem-
bly).
• Malfunction in ECU.
• Improperly installed crankshaft position sensor.
—
13
Intake air pressure sensor 1
(cylinders #1, #2, and #3):
open or short circuit detected. • Open or short circuit in wire harness.
• Open or short circuit in fuel injection system sub-wire harness.
• Defective intake air pressure sensor 1.
• Malfunction in ECU.
03
14
Intake air pressure sensor 1
(cylinders #1, #2, and #3):
hose system malfunction
(clogged or detached hose).
• Intake air pressure sensor 1 hoses are detached, clogged,
kinked, or pinched.
• Malfunction in ECU.
03
15
Throttle position sensor: open
or short circuit detected. • Open or short circuit in wire harness.
• Open or short circuit in fuel injection system sub-wire harness.
• Defective throttle position sensor.
• Malfunction in ECU.
• Improperly installed throttle position sensor.
01
16
Stuck throttle position sensor
detected. • Stuck throttle position sensor.
• Malfunction in ECU.
01
21
Coolant temperature sensor:
open or short circuit detected. • Open or short circuit in wire harness.
• Open or short circuit in coolant temperature sensor sub-lead.
• Defective coolant temperature sensor.
• Malfunction in ECU.
06
22
Intake air temperature sen-
sor: open or short circuit
detected. • Open or short circuit in wire harness.
• Open or short circuit in fuel injection system sub-wire harness.
• Defective intake air temperature sensor.
• Malfunction in ECU.
05
25
Intake air pressure sensor 2
(cylinder #1): open or short
circuit detected. • Open or short circuit in wire harness.
• Open or short circuit in fuel injection system sub-wire harness.
• Defective intake air pressure sensor 2.
• Malfunction in ECU.
04
26
Intake air pressure sensor 2
(cylinder #1): hose system
malfunction (clogged or
detached hose).
• Intake air pressure sensor 2 hose is detached, clogged, kinked,
or pinched.
• Malfunction in ECU.
04
30
Engine stops when an oil
pressure drop is detected.
• Oil pressure dropped. —
33
Malfunction detected in the
primary lead of the cylinder-
#1 ignition coil. • Open or short circuit in wire harness.
• Malfunction in cylinder-#1 ignition coil.
• Malfunction in ECU.
• Malfunction in a component of ignition system.
30
34
Malfunction detected in the
primary lead of the cylinder-
#2 ignition coil. • Open or short circuit in wire harness.
• Malfunction in cylinder-#2 ignition coil.
• Malfunction in ECU.
• Malfunction in a component of ignition system.
31
35
Malfunction detected in the
primary lead of the cylinder-
#3 ignition coil. • Open or short circuit in wire harness.
• Malfunction in cylinder-#3 ignition coil.
• Malfunction in ECU.
• Malfunction in a component of ignition system.
32