Subaru Impreza 2003 Service Manual page 1247

DIAGNOSTICS FOR ENGINE STARTING FAILURE
Step
1 CHECK OPERATING SOUND OF FUEL
PUMP.
Make sure that the fuel pump is in operation for
2 seconds when turning ignition switch to ON.
NOTE:
Fuel pump operation check can also be execut-
ed using the Subaru Select Monitor.
For the procedure, refer to "Compulsory Valve
Operation Check Mode". <Ref. to
EN(H4DOTC)-49, Compulsory Valve Opera-
tion Check Mode.>
Check
Does the fuel pump produce
"operating" sound?
EN(H4DOTC)-71
ENGINE (DIAGNOSTICS)
Yes
Check the fuel Display the DTC.
injector circuit. <Ref. to
<Ref. to EN(H4DOTC)-39,
EN(H4DOTC)-72, OPERATION,
FUEL INJECTOR Read Diagnostic
CIRCUIT, Diag- Trouble Code
nostics for Engine (DTC).>
Starting Failure.>
No