Subaru 2009 IMPREZA Service Manual page 1836

Step
10 CHECK HARNESS BETWEEN BATTERY
AND KEY WARNING SWITCH AND BODY IN-
TEGRATED UNIT.
1) Disconnect the connector from body inte-
grated unit.
2) Measure the voltage between body inte-
grated unit and chassis ground.
Connector & terminal
(B279) No. 2 — Chassis ground:
11 CHECK DELIVERY (TEST) MODE CONNEC-
TOR HARNESS.
1) Disconnect the connector of body inte-
grated unit.
2) Measure the resistance between body inte-
grated unit connector and the delivery (test)
mode connector.
Connector & terminal
(i84) No. 17 — (i1) No. 1:
12 CHECK HARNESS BETWEEN BODY INTE-
GRATED UNIT AND KEY LOCK SOLENOID.
1) Disconnect the connector from body inte-
grated unit.
2) Disconnect the connector of key lock sole-
noid.
3) Check for open circuit of harness, short cir-
cuit to battery or short circuit to ground between
the body integrated unit and key lock solenoid.
Connector & terminal
(B279) No. 11 — (B350) No. 2:
13 CHECK HARNESS BETWEEN KEY LOCK
SOLENOID AND CHASSIS GROUND.
Measure the resistance of harness between
key lock solenoid and chassis ground.
Connector & terminal
(B350) No. 1 — Chassis ground:
14 CHECK KEY LOCK SOLENOID OPERATION.
Connect the battery to the key lock solenoid
connector terminal, and operate the solenoid.
Terminals
No. 2 (+) — No. 1 (–):
15 CHECK OUTPUT OF BODY INTEGRATED
UNIT.
1) Connect all connectors.
2) Insert the key.
3) Measure the voltage between body inte-
grated unit and chassis ground.
Connector & terminal
(B279) No. 11 — Chassis ground:
AT Shift Lock Control System
Is the display 9 V or more when
the key is inserted, and less
than 1.5 V with the key
removed?
Is it less than 10 ?
Is the harness normal?
Is it less than 10 ?
Does the key lock solenoid
operate normally?
Is it 5 V or more in ranges other
than "P", and less than 1.5 V in
the "P" range?
CS-19
Check Yes
Replace the body
integrated unit.
Go to step 12.
Go to step 13.
Go to step 14.
Go to step 15.
Check the lock
mechanism of the
steering lock body.
CONTROL SYSTEMS
No
Check the follow-
ing items.
• Key warning
switch
• Harness/fuse
• Ignition circuit
Repair or replace
the harness
between the body
integrated unit and
delivery (test)
mode connector.
Repair or replace
the harness
between the body
integrated unit and
the key lock sole-
noid.
Repair or replace
the harness
between the key
lock solenoid and
chassis ground.
Replace the key
lock solenoid.
Replace the body
integrated unit.