Subaru IMPREZA GD 2007 Series Manual page 3095

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
MANUAL TRANSMISSION AND DIFFERENTIAL (DIAGNOSTICS)
Step
2 CHECK HARNESS BETWEEN DRIVER'S
CONTROL CENTER DIFFERENTIAL CON-
TROL MODULE AND CENTER DIFFEREN-
TIAL CONTROL DIAL.
Measure the resistance between the driver's
control center differential control module con-
nector and chassis ground.
Connector & terminal
(B380) No. 3 — Chassis ground:
(B380) No. 23 — Chassis ground:
(B381) No. 14 — Chassis ground:
3 CHECK CENTER DIFFERENTIAL CONTROL
DIAL.
1) Remove the center differential control dial.
2) Measure the resistance between the center
differential control dial connectors.
Terminals
No. 1 — No. 3:
4 CHECK CENTER DIFFERENTIAL CONTROL
DIAL.
Measure the resistance between the center dif-
ferential control dial connectors.
Terminals
No. 1 — No. 2:
5 CHECK DRIVER'S CONTROL CENTER DIF-
FERENTIAL CONTROL MODULE OUTPUT
POWER SUPPLY.
1) Connect all the connectors.
2) Turn the ignition switch to ON. (engine OFF)
3) Measure the voltage between the driver's
control center differential control module har-
ness connectors.
Connector & terminal
(B380) No. 23 (+) — (B380) No. 14 (–):
6 CHECK DRIVER'S CONTROL CENTER DIF-
FERENTIAL CONTROL MODULE INPUT
SIGNAL.
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor to the
data link connector.
3) Turn the ignition switch to ON (engine OFF)
and run the Subaru Select Monitor.
4) Read the data of "center differential switch
voltage" using the Subaru Select Monitor.
Check
Is the resistance 1 MΩ or
more?
Is the resistance between 7.5
and 12.5 kΩ?
Does the resistance drop
smoothly when the dial is
turned from the differential lock
to the differential free position?
Is the voltage approx. 5 V?
Does the voltage drop smoothly
from 5 V to 0 V when turning the
dial from the differential lock to
the differential free position?
6MT(diag)-60
Yes No
Go to step 3. Repair the short
circuit between the
driver's control
center differential
control module and
the center differen-
tial control dial.
Go to step 4.
Replace the
driver's control
dial.
Go to step 5.
Replace the center
differential control
dial.
Go to step 6. Replace the
driver's control
center differential
control module.
The center differ- Repair the poor
ential control dial contact of harness.
circuit is currently
operating properly.
A temporary poor
contact of connec-
tor or harness may
be the cause.
Repair the harness
or connector
between the
driver's control
center differential
control module and
center differential
control dial.