Subaru 2009 IMPREZA, Service Manual

Page: 1835 / 3619

CS-18
AT Shift Lock Control System
CONTROL SYSTEMS
Step Check Yes No
1 CHECK DELIVERY (TEST) MODE CONNEC-
TOR.
Check that the delivery (test) mode connector is
disconnected.
Is the delivery (test) mode con-
nector disconnected? Go to step 2 . Disconnect the
delivery (test)
mode connector.
2 CHECK BODY INTEGRATED UNIT POWER
SUPPLY AND GROUND CIRCUIT.
<Ref. to CS-12, BODY INTEGRATED UNIT
POWER SUPPLY AND GROUND CIRCUIT,
INSPECTION, AT Shift Lock Control System.>
Is there an abnormal condition? Follow the proce-
dures to inspect
and repair.
Go to step 3 .
3 CHECK CURRENT DATA.
1) Connect the Subaru Select Monitor.
2) Shift the select lever to “P” range.
3) Turn the ignition switch to ON.
4) Display the current data display and display
“P SW”. <Ref. to LAN(diag)-15, OPERATION,
Subaru Select Monitor.>
Is the display “ON” in the P
range and “OFF” in ranges
other than P? Go to step 4 . Go to step 7 .
4 CHECK CURRENT DATA.
1) Select the current data display and display
the “Key-lock warning SW”. <Ref. to LAN(diag)-
15, OPERATION, Subaru Select Monitor.>
2) Turn the ignition switch to OFF.
Does the display change from
“ON” to “OFF” when the key is
inserted and removed? Go to step 5 . Go to step 10 .
5 CHECK CURRENT DATA.
1) Turn the ignition switch to ON.
2) Select the current data display and display
“Key locking output”. <Ref. to LAN(diag)-15,
OPERATION, Subaru Select Monitor.>
Is the display “ON” in the P
range and “OFF” in ranges
other than P? Go to step 12 . Go to step 6 .
6 CHECK DTC OF BODY INTEGRATED UNIT.
1) Set the select lever to other than “P” range.
2) Check DTC of body integrated unit.
Is B1105 (key interlock circuit
malfunction) a current malfunc-
tion? Follow the DTC to
perform inspection
and repair. Go to step 12 .
7 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:
Is the harness normal? Go to step 8 . Repair or replace
the harness
between the body
integrated unit and
the “P” range
switch.
8 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:
Is it less than 10
:
? Go to step 9 . Repair the harness
between the “P”
range switch and
chassis ground.
9 CHECK P RANGE SWITCH.
Measure the resistance between “P” range
switch connector terminals.
Terminals
No. 2 — No. 1:
Is it less than 10
:
in the “P”
range, and 1 M
:
or more in
ranges other than “P”?
Replace the body
integrated unit. Replace the P
range switch.