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Fault code No.
46
Diagnostic code No.
Order Item/components and probable
cause
1
Connection.
• Wire harness ECU (engine control
unit) coupler
2
Faulty battery.
3
Malfunction in rectifier/regulator.
4
Open or short circuit in wire harness.
Fault code No.
50
Diagnostic code No.
Order Item/components and probable
cause
1
Malfunction in ECU (engine control
unit)
Symptom Power supply to the fuel injection system is not normal.
—
—
Check or maintenance job
• Check the coupler for any pins
• Check the locking condition of
• If there is a malfunction, repair it
• Replace or charge the battery.
• Replace if defective.
• Repair or replace if there is an
• Between battery terminal and
• Between main switch coupler
• Between fuse box coupler and
Symptom Faulty ECU (engine control unit) memory. (When this mal-
function is detected in the ECU, the fault code number
might not appear on the meter.)
—
—
Check or maintenance job
Replace the ECU (engine con-
trol unit).
8-52
FUEL INJECTION SYSTEM
that may have pulled out.
the coupler.
and connect the coupler se-
curely.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-66.
Refer to "CHARGING SYS-
TEM" on page 8-11.
open or short circuit.
main switch coupler.
(red–red)
and fuse box coupler.
(brown/blue–brown/blue)
ECU (engine control unit) cou-
pler.
(red/white–red/white)
Reinstatement
method
Starting the en-
gine and oper-
ating it at idle.
Reinstatement
method
Turning the
main switch to
"ON"
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