Subaru IMPREZA GD 2007 Series Manual page 3952

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Diagnostics Chart for Security Indicator Light
Step
1 CHECK SECURITY INDICATOR LIGHT.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector from
IMMCM.
3) Connect a resistor (100 Ω) between IMMCM
harness connector terminal No. 5 and chassis
ground.
2 CHECK IMMCM GROUND CIRCUIT.
Measure the resistance between IMMCM har-
ness connector terminal and chassis ground.
Connector & terminal
(B141) No. 15 — Chassis ground:
(B141) No. 25 — Chassis ground:
3 CHECK IMMCM IGNITION CIRCUIT.
1) Turn the ignition switch to ON. (engine OFF)
2) Measure the voltage between IMMCM har-
ness connector terminal and chassis ground.
Connector & terminal
(B141) No. 24 (+) — Chassis ground (–):
4 CHECK IMMCM POWER SUPPLY CIRCUIT.
1) Turn the ignition switch to OFF.
2) Measure the voltage between IMMCM har-
ness connector terminal and chassis ground.
Connector & terminal
(B141) No. 2 (+) — Chassis ground (–):
(B141) No. 3 (+) — Chassis ground (–):
5 CHECK COMBINATION METER CIRCUIT.
1) Remove the combination meter. <Ref. to
IDI-11, Combination Meter.>
2) Measure the voltage between combination
meter harness connector terminal and chassis
ground.
Connector & terminal
(i11) No. 10 (+) — Chassis ground (–):
6 CHECK COMBINATION METER CIRCUIT.
Measure the resistance between IMMCM har-
ness connector terminal and the combination
meter harness connector terminal.
Connector & terminal
(B141) No. 5 — (i10) No. 6:
Check
Does the security indicator light
illuminate?
Is the resistance less than 10 Ω? Go to step 3.
Is the voltage 10 V or more?
Is the voltage 10 V or more?
Is the voltage 10 V or more?
Is the resistance less than 10 Ω? LED malfunction-
IM(diag)-11
IMMOBILIZER (DIAGNOSTICS)
Yes No
Go to step 2. Go to step 5.
Repair the open
circuit of IMMCM
ground circuit.
Go to step 4. Check the harness
for open or short
between IMMCM
and ignition switch.
Replace the Check the harness
IMMCM <Ref. to for open or short
SL-47, Immobi- between IMMCM
lizer Control Mod- and fuse.
ule.> and then
replace all ignition
keys (including the
transponder). Exe-
cute the registra-
tion procedure
next. Refer to the
"REGISTRATION
MANUAL FOR
IMMOBILIZER".
Go to step 6. Check the harness
for open or short
between combina-
tion meter and
fuse.
Repair the harness
ing. Replace the or connector.
combination meter
print circuit. <Ref.
to IDI-12, DISAS-
SEMBLY, Combi-
nation Meter.>