Subaru B9 TRIBECA WX 2007 Manual page 798

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SECURITY AND LOCKS
12.CHECK IGNITION SWITCH ILLUMINATION
Step
1 CHECK FUSE.
Remove and visually check the fuse No. 14 (in
the main fuse box).
2 CHECK POWER SUPPLY.
1) Disconnect the ignition switch illumination
harness connector (B414).
2) Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
(B414) No. 2 (+) — Chassis ground (–):
3 CHECK IGNITION SWITCH ILLUMINATION
CIRCUIT.
1) Disconnect the body integrated unit harness
connector (B280) and ignition switch light har-
ness connector (B414).
2) Measure the resistance between body inte-
grated unit harness connector terminal and
ignition switch illumination harness connector
terminal.
Connector & terminal
(B280) No. 4 — (B414) No. 1:
13.CHECK HORN OPERATION
Step
1 CHECK HORN OPERATION.
Make sure the horn sounds when the horn
switch is pushed.
2 CHECK HORN OPERATION.
1) Disconnect the harness connector of body
integrated unit (B280).
2) Connect the harness connector terminal to
ground using a suitable lead wire.
Connector & terminal
(B280) No. 11 (+) — Chassis ground (–):
Keyless Entry System
Check
Is the fuse blown out?
Is the voltage 10 V or more?
Is the resistance less than 10 Ω? Replace the igni-
Check
Does the horn sound?
Does the horn sound?
SL-22
Yes No
Replace the fuse Go to step 2.
with a new one.
Go to step 3.
Check the harness
for open circuits
and shorts
between the igni-
tion switch illumi-
nation and fuse.
Check the harness
tion switch illumi- for open circuits
nation bulb with a and shorts
new one. <Ref. to between the body
LI-36, REMOVAL, integrated unit and
Ignition Switch Illu- ignition switch illu-
mination.> mination.
Yes No
Go to step 2. Check the horn cir-
cuit.
Check the body Check the harness
integrated unit. for open circuits
<Ref. to and/or shorts
LAN(diag)-2, Basic between the body
Diagnostic Proce- integrated unit and
dure.> horn relay.