Repair Section
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7 Check each injector. (Refer to the injector check
procedure issued by the vehicle manufacturer.)
Repair or replace the injector and/or the corre-
sponding circuit.
8 Check the engine ECU power supply. (Refer to
the engine ECU power supply circuit diagram
issued by the vehicle manufacturer.)
Repair the engine ECU power supply.
9 Check the supply pump and the supply pump
drive circuit. (Refer to the supply pump drive cir-
cuit diagram issued by the vehicle manufac-
turer.)
Repair or replace the supply pump and drive cir-
cuit.
Troubleshooting complete
OK
NG
OK
NG
OK
NG
OK