Subaru IMPREZA GD 2007 Series Manual page 3973

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INSTRUMENTATION/DRIVER INFO
Step
7 CHECK HARNESS BETWEEN AUTO A/C
CONTROL MODULE AND COMBINATION
METER.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from the combi-
nation meter.
3) Measure the resistance between the auto A/
C control module harness connector terminal
and combination meter harness connector ter-
minal.
Connector & terminal
(B282) No. 11 — (i10) No. 12:
8 CHECK POWER SUPPLY FOR AMBIENT
SENSOR.
1) Turn the ignition switch to ON.
2) Measure the voltage between the auto A/C
control module terminal and chassis ground.
Connector & terminal
(B283) No. 9 (+) — Chassis ground (–):
9 CHECK HARNESS BETWEEN AMBIENT
TEMPERATURE SENSOR AND COMBINA-
TION METER.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from the ambient
sensor.
3) Measure the resistance between ambient
temperature sensor harness connector termi-
nal, combination meter harness connector ter-
minal and auto A/C control module harness
connector terminal.
Connector & terminal
(F78) No. 1 — (i10) No. 11:
(F78) No. 1 — (B283) No. 9:
(F78) No. 2 — (i10) No. 8:
10 CHECK AMBIENT SENSOR.
1) Remove the ambient temperature sensor.
2) Check the ambient temperature sensor.
<Ref. to IDI-19, INSPECTION, Ambient Sen-
sor.>
11 CHECK OUTSIDE TEMPERATURE INDICA-
TOR.
1) Connect the combination meter and auto A/
C control module harness connector.
2) Connect a resistor (2.2 kΩ) between the ter-
minals of ambient sensor harness connector.
3) Turn the ignition switch to ON and check the
outside temperature indicator display.
Combination Meter System
Check
Is the resistance less than 10 Ω? Go to step 8.
Is the voltage 4 V or more?
Is the resistance less than 10 Ω? Go to step 10.
Is the ambient temperature
sensor OK?
Is the outside temperature indi-
cator indicating 25°C (77°F)?
IDI-10
Yes No
Repair the wiring
harness.
Go to step 9. Replace the auto
A/C control mod-
ule.
Repair the wiring
harness.
Go to step 11. Replace the ambi-
ent sensor.
Repair the poor Except for STI
contact of ambient model:
temperature sen- Replace the com-
sor harness con- bination meter
nector. print circuit.
STI model:
Replace the meter
main assembly.