Subaru 2009 IMPREZA Service Manual page 3134

SECURITY AND LOCKS
6. CHECK SECURITY INDICATOR LIGHT CIRCUIT
Step
1 CHECK SECURITY INDICATOR LIGHT.
1) Disconnect the harness connector of body
integrated unit.
2) Place a 100
connector terminal using a suitable lead wire,
and connect to ground through the resistance.
Connector & terminal
(i84) No. 10 — Chassis ground:
2 CHECK POWER SUPPLY FOR SECURITY
INDICATOR LIGHT.
1) Disconnect the connector from the combi-
nation meter.
2) Measure the voltage between the combina-
tion meter harness connector terminal and
chassis ground.
Connector & terminal
(i10) No. 1 (+) — Chassis ground (–):
3 CHECK SECURITY INDICATOR LIGHT CIR-
CUIT.
Measure the resistance between the combina-
tion meter harness connector terminal and the
security control unit harness connector termi-
nal.
Connector & terminal
(i10) No. 39 — (i84) No. 10:
7. CHECK HORN
Step
1 CHECK HORN OPERATION.
Check the horn sounds when the horn switch is
pushed.
2 CHECK OUTPUT TO HORN RELAY.
1) Connect the Subaru Select Monitor Kit.
2) Turn the ignition switch to ON (engine OFF)
and run the "PC application for Subaru Select
Monitor".
3) On «System Selection Menu» display,
select {Integ. unit mode}.
4) Select {Function check}.
5) Select {Horn Output} and execute.
3 CHECK HORN RELAY CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector of body
integrated unit.
3) Disconnect the main fuse box harness con-
nector (B186).
4) Measure the resistance between harness
connector terminals.
Connector & terminal
(B279) No. 29 — (B186) No. 1:
8. CHECK HAZARD LIGHT OPERATION
For operation procedure, refer to the hazard light inspection of the keyless entry system. <Ref. to SL-23,
CHECK KEYLESS BUZZER, INSPECTION, Keyless Entry System.>
Security System
resistance on the harness
Check
Does the security indicator light
illuminate?
Is the voltage 10 V or more?
Is the resistance less than 10 ? Replace the com-
Check
Does the horn sound?
Does the horn sound?
Is the resistance less than 10 ? Check body inte-
SL-30
Yes No
Check body inte- Go to step 2.
grated unit. <Ref.
to LAN(diag)-2,
Basic Diagnostic
Procedure.>
Go to step 3.
Check the harness
for open or short
circuits between
combination meter
and fuse.
Check the harness
bination meter. for open or short
<Ref. to IDI-16, circuits between
Combination the combination
Meter.> meter and body
integrated unit.
Yes No
Go to step 2. Check the horn cir-
cuit.
Horn circuit is OK. Go to step 3.
Repair or replace
grated unit. <Ref. the harness.
to LAN(diag)-2,
Basic Diagnostic
Procedure.>