6 - 24 FUEL INJECTION SYSTEM FI FI Fault code No. 43 Symptom Power supply to the injector and fuel pump is not normal. Diagnostic code No. D09 Fuel system voltage Order Item/components and probable cause Check or maintenance job Reinstatement method 1 Connections • Fuel injection system relay • Main wire harness-ECU coupler • Check the coupler for any pins that may be pulled out. • Check the locking condition of the coupler. • If there is a malfunction, repair it and connect the coupler securely. Starting the engine and operating it at idle. 2 Open or short circuit in the wire harness. • Repair or replace if there is an open or short circuit.
• Between fuel injection system relay coupler and ECU coupler. (blue/red–blue/red) (red/blue–red/blue) • Between fuel injection system relay coupler and starter relay coupler. (brown/black–brown/black) • Between fuel injection system relay coupler and left handlebar switch coupler. (red/black–red/black) 3 Malfunction or open circuit in fuel pump relay. • Execute the diagnostic mode. (Code No.D09) • Replace if defective. • If there is no malfunction with the relay unit, replace the ECU. Fault code No. 44 Symptom Error is detected while reading or writing on EEPROM (CO adjustment value). Diagnostic code No.
D60 EEPROM improper cylinder indication Order Item/components and probable cause Check or maintenance job Reinstatement method 1 Malfunction in ECU. • Execute the diagnostic mode. (Code No.D60) 1. Check the faulty cylinder. • Replace ECU if defective. Turning the main switch to “ON”.