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Fault code table
Fault
Symptom
code No.
No normal signals are
received from the cylinder
11
identification sensor.
No normal signals are
received from the crankshaft
12
position sensor.
Cylinder-#1 intake air pres-
13
sure sensor: open or short
circuit detected.
Cylinder-#1 intake air pres-
sure sensor: hose system
14
malfunction (clogged or
detached hose).
Throttle position sensor: open
or short circuit detected.
15
Stuck throttle position sensor
16
detected.
Coolant temperature sensor:
open or short circuit detected.
21
Intake air temperature sen-
22
sor: open or short circuit
detected.
Cylinder-#2 intake air pres-
25
sure sensor: open or short
circuit detected.
Cylinder-#2 intake air pres-
sure sensor: hose system
26
malfunction (clogged or
detached hose).
Engine stops when an oil
30
pressure drop is detected.
Open circuit detected in the
primary lead of the cylinder-
33
#1 ignition coil.
Open circuit detected in the
primary lead of the cylinder-
34
#2 ignition coil.
No normal signals are
42
received from the speed sen-
sor.
ECU is unable to monitor the
battery voltage (an open or
43
short circuit in the line to the
ECU).
Error is detected while read-
44
ing or writing on EEPROM
(CO adjustment value).
FUEL INJECTION SYSTEM
Probable cause of malfunction
• Open or short circuit in wire harness.
• Defective cylinder identification sensor.
• Malfunction in ECU.
• Improperly installed cylinder identification sensor.
• Open or short circuit in wire harness.
• Defective crankshaft position sensor.
• Malfunction in A.C. magneto rotor.
• Malfunction in ECU.
• Improperly installed crankshaft position sensor.
• Open or short circuit in wire harness.
• Defective cylinder-#1 intake air pressure sensor.
• Malfunction in ECU.
• Cylinder-#1 intake air pressure sensor hose is detached,
clogged, kinked, or pinched.
• Malfunction in ECU.
• Open or short circuit in wire harness.
• Defective throttle position sensor.
• Malfunction in ECU.
• Improperly installed throttle position sensor.
• Stuck throttle position sensor.
• Malfunction in ECU.
• Open or short circuit in sub-wire harness 2.
• Open or short circuit in wire harness.
• Defective coolant temperature sensor.
• Malfunction in ECU.
• Open or short circuit in wire harness.
• Defective intake air temperature sensor.
• Malfunction in ECU.
• Open or short circuit in wire harness.
• Defective cylinder-#2 intake air pressure sensor.
• Malfunction in ECU.
• Cylinder-#2 intake air pressure sensor hose is detached,
clogged, kinked, or pinched.
• Malfunction in ECU.
• Oil pressure dropped.
• Open or short circuit in sub-wire harness 1.
• Open or short circuit in wire harness.
• Malfunction in cylinder-#1 ignition coil.
• Malfunction in ECU.
• Malfunction in a component of ignition cut-off circuit system.
• Open or short circuit in sub-wire harness 1.
• Open or short circuit in wire harness.
• Malfunction in cylinder-#2 ignition coil.
• Malfunction in ECU.
• Malfunction in a component of ignition cut-off circuit system.
• Open or short circuit in wire harness.
• Defective speed sensor.
• Malfunction in ECU.
• Open or short circuit in wire harness.
• Malfunction in ECU.
• Malfunction in ECU. (The CO adjustment value is not properly
written on or read from the internal memory.)
7-9
FI
Diagnostic code No.
—
—
03
03
01
01
06
05
04
04
—
30
31
07
09
60
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Table of Contents
Troubleshooting
