Subaru IMPREZA 2002 Service Manual page 396

DIAGNOSTICS FOR ENGINE STARTING FAILURE
ENGINE (DIAGNOSTICS)
Yes
30 to step 7.
No
Replace the fuel
pump relay. <Ref.
Fuel Pump Relay.>
to FU(S0HC)-49,
I
Step
,
CHECK FUEL PUMP RELAY.
1)Disconnect the connectors from fuel pump
relay and main relay.
2)Remove the fuel pump relay and main relay
with bracket.
3)Connect the battery to fuel pump relay con-
nector terminals No. 1 and No. 3.
4)Measure the resistance between connector
terminals of fuel pump relay.
Terminals
NO.
2
-
NO. 4:
CHECK HARNESS BETWEEN ECM AND
FUEL PUMP RELAY CONNECTOR.
1)Disconnect the connectors from ECM.
2)Measure the resistance of harness between
ECM and fuel pump relay connector.
Connector & terminal
CHECK POOR CONTACT.
Check poor contact in ECM connector.
(8134) NO. 16
-
(846) NO. 3:
Check
Is the resistance less than 10
Q?
I s
the resistance less than 1
n?
Is there poor contact in ECM
connector?
20 to step 8.
3epair poor con-
act in ECM con-
lector.
EN(S0HC)-72
Repair open circuit
in harness
between ECM and
fuel pump relay
connector.
Check fuel injec-
tor circuit. <Ref. to
FUEL INJECTOR
CIRCUIT, Diag-
nostics for Engine
Starting Failure.>
EN(S0HC)-74,