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FI
FUEL INJECTION SYSTEM
Fault code No. 44 Symptom Error is detected while reading or writing on EEPROM
(CO adjustment value).
Used diagnostic code No. 60 (EEPROM improper cylinder indication)
Order Item/components Check or maintenance job Restore method
1 Malfunction in ECU Execute the diagnostic mode. (Code No. 60)
• Check the faulty cylinder.
• Readjust the CO of the displayed cylinder.
Refer to “ADJUSTING THE EXHAUST GAS
VOLUME” in chapter 3.
Replace the ECU if it is defective.
Reinstated by set-
ting the main switch
to “ON”.
Fault code No. 46 Symptom Power supply to the FI system relay is not normal.
Used diagnostic code No. 09
Order Item/components Check or maintenance job Restore method
1 Faulty battery Replace or change the battery.
Refer to “CHECKING AND CHARGING THE
BATTERY” in chapter 3.
Reinstated by start-
ing the engine and
operating it at idle.
2 Open or short circuit in the wire har-
ness.
Excute the diagnostic mode. (Code No. 09)
Repair or replace if there is an open or short cir-
cuit:
between battery and fuel injection system fuse
Red - Red
between the fuel injection system fuse and fuel
injection system relay
Brown - Brown
between the fuel injection system relay and ECU
Red/Blue - Red/Blue
3 Coupler connections ECU coupler Check the coupler for any pins that may have
pulled out.
Check that the coupler is securely locked.
If necessary, repair the coupler or securely con-
nect it.
Fault code No. 50 Symptom Faulty ECU memory. (When this malfunction is detected in the ECU, the fault
code number might not appear on the meter.)
Used diagnostic code No. – –
Order Item/components Check or maintenance job Restore method
1 Malfunction in ECU Replace the ECU. Reinstated by set-
ting the main switch
to “ON”.