Subaru Legacy 2004 Service Manual page 813

Step
8 CHECK IGNITION SWITCH.
1) Disconnect the connector from ignition
switch.
2) Measure the resistance between ignition
switch terminals after turning the ignition
switch to START position.
Terminals
No. 2 — No. 3:
9 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 (
10 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:
11 CHECK INPUT VOLTAGE OF 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. 32 (+) — Chassis ground (
(B137) No. 8 (+) — Chassis ground (
Diagnostics for Engine Starting Failure
Is the resistance less than 5
'?
Is the voltage more than 10 V? Go to step 10.
"
):
"
):
"
):
"
):
Is the resistance less than 1
'?
Is the voltage more than 10 V? Replace the ECM.
"
):
"
):
EN(H4SO 2.5)(diag)-57
Check Yes
Go to step 9.
Go to step 11.
<Ref. to FU(H4SO
2.5)-36, Engine
Control Module
(ECM).>
ENGINE (DIAGNOSTICS)
No
Replace the igni-
tion switch.
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.