Subaru 2009 IMPREZA Service Manual page 1833

CONTROL SYSTEMS
Step
8 CHECK HARNESS BETWEEN BODY INTE-
GRATED UNIT AND "P" RANGE SWITCH.
1) Disconnect the connector from body inte-
grated unit.
2) Disconnect the connector of "P" range
switch.
3) Check for open circuit of harness, short cir-
cuit to battery or short circuit to ground between
the body integrated unit and "P" range switch.
Connector & terminal
(B281) No. 4 — (B117) No. 1:
9 CHECK HARNESS BETWEEN "P" RANGE
SWITCH AND CHASSIS GROUND.
Measure the resistance of harness between "P"
range switch and chassis ground.
Connector & terminal
(B117) No. 2 — Chassis ground:
10 CHECK P RANGE SWITCH.
Measure the resistance between "P" range
switch connector terminals.
Terminals
No. 2 — No. 1:
11 CHECK STOP LIGHT SWITCH INPUT SIG-
NAL.
1) Disconnect the connector from body inte-
grated unit.
2) Measure the voltage between the body inte-
grated unit connector terminal and chassis
ground.
Connector & terminal
(B280) No. 2 (+) — Chassis ground (–):
12 CHECK SHIFT LOCK SOLENOID OPERA-
TION.
Connect the battery to the shift lock solenoid
unit connector terminal, and operate the sole-
noid.
Terminals
No. 3 (+) — No. 4 (–):
AT Shift Lock Control System
Is the harness normal?
Is it less than 10 ?
Is it less than 10
range, and 1 M or more in
ranges other than "P"?
Is the voltage 9 V or more when
the brake pedal is depressed,
and less than approximately
1.5 V when not pressed?
Does the shift lock solenoid
operate normally?
CS-16
Check Yes
Go to step 9.
Go to step 10.
in the "P" Replace the body
integrated unit.
Replace the body
integrated unit.
Check the lock
mechanism of the
select lever body.
No
Repair or replace
the harness
between the body
integrated unit and
the "P" range
switch.
Repair the harness
between the "P"
range switch and
chassis ground.
Replace the P
range switch.
Check the stop
light system.
Replace the shift
lock solenoid.