Subaru Legacy 2005 Service Manual page 1751

Step
1 CHECK BATTERY.
Check the battery voltage.
2 CHECK OPERATION OF STARTER MOTOR. Does the starter motor oper-
3 CHECK DTC.
4 CHECK INPUT SIGNAL OF STARTER MO-
TOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from starter
motor.
3) Turn the ignition switch to START.
4) Measure the power supply voltage between
starter motor connector terminal and engine
ground.
Connector & terminal
(B14) No. 1 (+) — Engine ground (
NOTE:
• For AT model, place the select lever in "P" or
"N" range.
• For MT model, depress the clutch pedal.
5 CHECK HARNESS BETWEEN BATTERY
AND IGNITION SWITCH CONNECTOR.
1) Disconnect the connector from ignition
switch.
2) Measure the power supply voltage between
ignition switch connector and chassis ground.
Connector & terminal
(B72) No. 3 (+) — Chassis ground (
6 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.
Terminal
No. 2 — No. 3:
7 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 (
Diagnostics for Engine Starting Failure
Is the voltage more than 12 V? Go to step 2.
ate?
Is DTC displayed? <Ref. to
EN(H6DO)(diag)-33, OPERA-
TION, Read Diagnostic Trouble
Code (DTC).>
Is the voltage more than 10 V? Check the starter
−
):
Is the voltage more than 10 V? Go to step 6.
−
):
Is the resistance less than 5
Ω?
Is the voltage more than 10 V? Go to step 8.
−
):
−
):
−
):
−
):
EN(H6DO)(diag)-55
Check
Go to step 3.
Inspect the rele-
vant DTC using
List of Diagnostic
Trouble Code
(DTC). <Ref. to
EN(H6DO)(diag)-
66, List of Diag-
nostic Trouble
Code (DTC).>
motor. <Ref. to
SC(H4SO 2.0)-6,
Starter.>
Go to step 7.
ENGINE (DIAGNOSTICS)
Yes No
Charge or replace
the battery.
Go to step 4.
Repair the poor
contact in ECM
connector.
Go to step 5.
Repair the open
circuit of harness
between ignition
switch and bat-
tery, and check
fuse SBF No. 6
and MAIN SBF.
Replace the igni-
tion switch.
Repair the open
circuit of harness
between starter
relay and ignition
switch.