Subaru B9 TRIBECA WX 2007 Manual page 794

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SECURITY AND LOCKS
7. CHECK KEY WARNING SWITCH
Step
1 CHECK FUSE.
Remove and visually check the fuse No. 14 (in
the main fuse box).
2 CHECK KEY WARNING SWITCH CIRCUIT.
1) Disconnect the harness connector of body
integrated unit (B281).
2) Insert the key into ignition switch. (LOCK
position)
3) Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
(B281) No. 7 (+) — Chassis ground (–):
3 CHECK KEY WARNING SWITCH CIRCUIT.
1) Remove the key from ignition switch.
2) Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
(B281) No. 7 (+) — Chassis ground (–):
4 CHECK KEY WARNING SWITCH.
1) Disconnect the key warning switch harness
connector (B350).
2) Insert the key into ignition switch. (LOCK
position)
3) Measure the resistance between key warn-
ing switch terminals.
Connector & terminal
(B350) No. 3 — No. 4:
5 CHECK KEY WARNING SWITCH.
1) Remove the key from ignition switch.
2) Measure the resistance between key warn-
ing switch terminals.
Connector & terminal
(B350) No. 3 — No. 4:
Keyless Entry System
Check
Is the fuse blown out?
Is the voltage 10 V or more?
Is the voltage 0 V?
Is the resistance less than 1 Ω? Go to step 5.
Is the resistance more than 1
MΩ?
SL-18
Yes No
Replace the fuse Go to step 2.
with a new one.
Go to step 3. Go to step 4.
The key warning Go to step 4.
switch is OK.
Replace the key
warning switch.
Check the follow- Replace the key
ing: warning switch.
• Harness for
open circuits and
shorts between the
key warning switch
and fuse
• Harness for
open or short
between the body
integrated unit and
key warning switch