Subaru Legacy 2004 Service Manual page 486

ENGINE (DIAGNOSTICS)
Step
8 CHECK INPUT VOLTAGE OF STARTER RE-
LAY.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from starter relay.
3) Connect the connector to ignition switch.
4) Measure the input voltage between starter
relay connector and chassis ground after turn-
ing the ignition switch to START position.
Connector & terminal
LHD MODEL
(B225) No. 13 (+) — Chassis ground (
(B225) No. 15 (+) — Chassis ground (
RHD MODEL
(B225) No. 14 (+) — Chassis ground (
(B225) No. 16 (+) — Chassis ground (
9 CHECK STARTER RELAY.
1) Connect the battery to starter relay termi-
nals No. 15 and No. 16.
2) Measure the resistance between starter
relay terminals.
Terminals
No. 13 — No. 14:
10 CHECK INPUT VOLTAGE FROM ECM.
1) Turn the ignition switch to OFF.
2) Connect the connector to starter relay.
3) Disconnect the connectors from ECM.
4) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B135) No. 23 (+) — Chassis ground (
Diagnostics for Engine Starting Failure
Is the voltage more than 10 V? Go to step 9.
"
):
"
):
"
):
"
):
Is the resistance less than 1
&?
Is the voltage more than 10 V? Replace the ECM.
"
):
EN(H4SO 2.0)(diag)-54
Check Yes
Go to step 10.
<Ref. to FU(H4SO
2.0)-34, Engine
Control Module
(ECM).>
No
Repair the open
circuit in harness
between starter
fan relay and igni-
tion switch.
Replace the
starter relay.
Repair the open or
ground short cir-
cuit in harness
between ECM and
starter relay.