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FI
FUEL INJECTION SYSTEM
1
Used diagnostic code No. --
Order
Inspection operation item and
probable cause
Operation item and countermeasure
Reinstatement
method
Reinstated by turn-
ing the main switch
ON.
Malfunction in ECU Replace the ECU.
Faulty ECU memory. (when this malfunction is detected in the ECU, the
fault code number might not appear on the meter.)
Fault code No.
50 Symptom
Power supply to FI system is not normal. (red lead)
1
2
3
4
Fault code No.
46 Symptom
Used diagnostic code No. --
Order
Inspection operation item and
probable cause
Operation item and countermeasure
Reinstatement
method
Reinstated by start-
ing the engine and
operating it at idle.
Connected condition of con-
nector
Inspect the coupler for any
pins that may have pulled
out.
Check the locking condition
of the coupler.
Faulty battery
Malfunction in rectifier/ regula-
tor
Open or short circuit in wiring
harness.
If there is a malfunction, repair it and connect
it securely.
ECU coupler
Replace or charge the battery.
Refer to “CHECKING AND CHARGING THE
BATTERY” in chapter 3.
Replace if defective.
Refer to “CHARGING SYSTEM” in chapter 7.
Repair or replace if there is an open or short
circuit.
Between battery and ECU
red-red
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