Service manual

FUEL INJECTION SYSTEM
7-35
42
No normal signals are
received from the speed
sensor.
Open circuit is detected in
the neutral switch.
• Open circuit in wire harness.
• Defective speed sensor.
• Malfunction in vehicle speed sensor
detected.
• Defective neutral switch.
• Malfunction in the engine side of the neutral
switch.
• Malfunction in ECU.
07
21
43
The ECU is unable to
monitor the battery voltage
(an open or short circuit in
the line to the ECU).
• Open or short circuit in wire harness.
• Malfunction in ECU.
09
44
Error is detected while
reading or writing on
EEPROM (CO adjustment
value).
• Malfunction in ECU. (The CO adjustment
value is not properly written on or read from
the internal memory).
60
46
Power supply to the fuel
injection system is not
normal.
Malfunction in the charging system. Refer to
“CHARGING SYSTEM” on page 7-11.
—
50
Faulty ECU memory.
(When this malfunction is
detected in the ECU, the
fault code number might
not appear on the meter.)
• Malfunction in ECU. (The program and data
are not properly written on or read from the
internal memory.)
—
62
Muffler cooling fan
temperature sensor: open
or short circuit detected.
• Open or short circuit in wire harness.
• Defective muffler cooling fan temperature
sensor.
• Malfunction in ECU.
• Improperly installed sensor.
12
63
Engine trouble warning
light is flashing.
(Abnormally high
temperature is detected by
muffler cooling fan
temperature sensor.)
• Muffler cover fan fuse or ECU fuse is blown.
• Defective muffler cooling fan temperature
sensor or muffler cooling fan motor relay
• Positions of muffler cooling fan temperature
sensor and its surrounding parts changed
due to deformed parts near sensor
• Muffler cooling fan temperature sensor
detected a temperature of 120 °C (248 °F)
or higher.
63
Er-1
No signals are received
from the ECU.
• Open or short circuit in wire harness.
• Malfunction in meter.
• Malfunction in ECU.
• Defective wire connection of the ECU
coupler.
—
Er-2
No signals are received
from the ECU within the
specified duration.
• Improper connection in wire harness.
• Malfunction in meter.
• Malfunction in ECU.
—
Er-3
Data from the ECU cannot
be received correctly.
• Improper connection in wire harness.
• Malfunction in meter.
• Malfunction in ECU.
—
Fault
code
No.
Symptom Probable cause of malfunction
Diagnostic
code No.