Subaru IMPREZA GD 2007 Series Manual page 2794

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Step
1 CHECK HARNESS BETWEEN BATTERY
AND KEY WARNING SWITCH.
1) Disconnect the connector of key warning
switch.
2) Measure the voltage of harness between
key warning switch and chassis ground.
Connector & terminal
(B370) No. 1 (+) — Chassis ground (–):
2 CHECK KEY WARNING SWITCH.
Measure the resistance between connector ter-
minals of key warning switch.
Terminals
No. 1 — No. 2:
3 CHECK KEY WARNING SWITCH.
1) Remove the key.
2) Measure the resistance between connector
terminals of key warning switch.
Terminals
No. 1 — No. 2:
4 CHECK HARNESS BETWEEN AT SHIFT
LOCK CONTROL MODULE AND KEY
WARNING SWITCH.
1) Disconnect the body integrated unit connec-
tor.
2) Measure the voltage between body inte-
grated unit and chassis ground.
Connector & terminal
(B281) No. 20 (+) — Chassis ground (–):
5 CHECK HARNESS BETWEEN BODY INTE-
GRATED UNIT AND KEY LOCK SOLENOID.
1) Disconnect the connector key lock solenoid.
2) Measure the resistance of harness between
body integrated unit and key lock solenoid.
Connector & terminal
(B370) No. 5 — (B280) No. 3:
6 CHECK HARNESS BETWEEN BODY INTE-
GRATED UNIT AND KEY LOCK SOLENOID.
Measure the harness resistance between the
body integrated unit and chassis ground.
Connector & terminal
(B280) No. 3 — Chassis ground:
7 CHECK HARNESS BETWEEN KEY LOCK
SOLENOID AND CHASSIS GROUND.
Measure the resistance of the harness between
key lock solenoid and chassis ground.
Connector & terminal
(B370) No. 6 — Chassis ground:
8 CHECK KEY LOCK SOLENOID.
Measure the resistance of key lock solenoid
connector terminals.
Terminals
No. 5 — No. 6:
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:
AT Shift Lock Control System
Check
Is the voltage 9 — 16 V?
Is the resistance 1 MΩ or
more?
Is the resistance 1 MΩ or
more?
Is the voltage 9 V or more?
Is the resistance 1 MΩ or
more?
Is the resistance 1 Ω or more? Go to step 7.
Is the resistance less than 10
Ω?
Is the resistance between 4 —
8 Ω?
Is the resistance less than 1 Ω? Go to step 10.
CS-21
CONTROL SYSTEMS
Yes No
Go to step 2. Repair the open or
short circuit of har-
ness between bat-
tery and key
warning switch.
Go to step 3.
Replace the key
warning switch.
Go to step 4. Replace the key
warning switch.
Go to step 5.
Repair the open
circuit of harness
between body inte-
grated unit and key
warning switch.
Repair the open Go to step 6.
circuit of harness
between body inte-
grated unit and key
lock solenoid.
Repair the short
circuit of harness
between body inte-
grated unit and key
lock solenoid.
Go to step 8.
Repair open circuit
of harness
between key lock
solenoid and chas-
sis ground.
Go to step 9. Replace the key
lock solenoid.
Repair the short
circuit of harness
between "P" range
switch and body
integrated unit.