Service manual

FUEL INJECTION SYSTEM
8-67
Fault code No. 43 Symptom
Power supply to the injectors and fuel pump is not nor-
mal.
Diagnostic code No. 09 Fuel system voltage (battery voltage)
Order
Item/components and probable
cause
Check or maintenance job
Reinstatement
method
1
Connections
• Relay unit coupler (fuel pump relay)
• Main wire harness ECU coupler
• Check the couplers for any pins
that may be pulled out.
• Check the locking condition of
the couplers.
• If there is a malfunction, repair it
and connect it securely.
Starting the
engine and
operating it at
idle.
2
Open or short circuit in wire harness. • Repair or replace if there is an
open or short circuit.
• Between relay unit coupler and
ECU coupler.
(Blue/Yellow–Blue/Yellow)
(Red/Blue–Red/Blue)
• Between relay unit coupler and
battery terminal.
(Red–Red)
• Between relay unit coupler and
engine stop switch coupler.
(Red/Black–Red/Black)
3
Malfunction or open circuit in fuel
pump relay
• Execute the diagnostic mode.
(Code No. 09)
• Replace if defective.
• If there is no malfunction with
the fuel pump relay, replace the
ECU.
Fault code No. 44 Symptom
An error is detected while reading or writing on EEPROM
(CO adjustment value).
Diagnostic code No. 60 EEPROM fault cylinder No.
Orde
r
Item/components and probable
cause
Check or maintenance job
Reinstatement
method
1
Malfunction in ECU • Execute the diagnostic mode.
(Code No. 60)
1 Check the faulty cylinder. (If
multiple cylinders are defec-
tive, the number of the faulty
cylinders appears alternately
at 2-second intervals.)
• Replace ECU if defective.
Turning the
main switch to
“ON”.