Subaru 2009 IMPREZA Service Manual page 490

Step
15 CHECK HARNESS BETWEEN IGNITION
SWITCH AND CLUTCH START SWITCH.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from clutch start
switch.
3) Turn the ignition switch to START.
4) Measure the voltage between the clutch
start switch connector and chassis ground.
Connector & terminal
(B106) No. 1 (+) — Chassis ground (–):
16 CHECK CLUTCH START SWITCH.
Measure the resistance between clutch start
switch terminals while depressing the clutch
pedal.
Terminals
No. 1 — No. 2:
17 CHECK HARNESS BETWEEN ECM AND
CLUTCH START SWITCH.
Measure the resistance of harness between
ECM and clutch start switch connector.
Connector & terminal
(B136) No. 32 — (B106) No. 2:
18 CHECK HARNESS BETWEEN STARTER RE-
LAY AND STARTER MOTOR.
Measure the resistance of harness between
starter relay connector and starter motor.
Connector & terminal
(B225) No. 10 — (B14) No. 1:
Diagnostics for Engine Starting Failure
Is the voltage 10 V or more?
Is the resistance less than 1 ? Go to step 17.
Is the resistance less than 1 ? Go to step 18.
Is the resistance less than 1 ? Check the engine
EN(H4SO)(diag)-73
Check Yes
Go to step 16.
control module
(ECM) power sup-
ply and ground
line. <Ref. to
EN(H4SO)(diag)-
74, CHECK
POWER SUPPLY
AND GROUND
LINE OF ENGINE
CONTROL MOD-
ULE (ECM), Diag-
nostics for Engine
Starting Failure.>
ENGINE (DIAGNOSTICS)
No
Repair the open
circuit in harness
between ignition
switch connector
and clutch start
switch connector.
Replace the clutch
start switch. <Ref.
to CL-27, Clutch
Switch.>
Repair the open
circuit of harness
between ECM and
clutch start switch
connector.
Repair the open
circuit of the har-
ness between
starter relay con-
nector and starter
motor.