Subaru IMPREZA GD 2007 Series Manual page 3079

asieps_tobira_IM_US.book 44 ページ ２０１２年１月１７日 火曜日 午後３時４８分
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
MANUAL TRANSMISSION AND DIFFERENTIAL (DIAGNOSTICS)
Step
7 CHECK HARNESS BETWEEN DRIVER'S
CONTROL CENTER DIFFERENTIAL CON-
TROL MODULE AND YAW RATE & LATER-
AL G SENSOR.
Measure the resistance between the driver's
control center differential control module con-
nector and chassis ground.
Connector & terminal
(B380) No. 10 — Chassis ground:
8 CHECK DRIVER'S CONTROL CENTER DIF-
FERENTIAL CONTROL INPUT SIGNAL.
1) Connect all the connectors.
2) Connect the Subaru Select Monitor to the
vehicle.
3) Turn the ignition switch to ON.
4) Turn on the Subaru Select Monitor.
5) Read the yaw rate sensor voltage using the
Subaru Select Monitor. <Ref. to 6MT(diag)-15,
OPERATION, Subaru Select Monitor.>
9 CHECK YAW RATE & LATERAL G SENSOR
OUTPUT.
1) Turn the ignition switch to OFF.
2) Check the oscilloscope signal pattern
between the driver's control center differential
control module connector terminals.
Connector & terminal
Positive lead: (B380) No. 10
Negative lead: (B380) No. 20
3) Turn the ignition switch to ON.
10 CHECK DRIVER'S CONTROL CENTER DIF-
FERENTIAL CONTROL MODULE OUTPUT.
1) Turn the ignition switch to OFF.
2) Check the oscilloscope signal pattern
between the driver's control center differential
control module connector terminals.
Connector & terminal
Positive lead: (B380) No. 19
Negative lead: (B380) No. 20
3) Turn the ignition switch to ON.
Check
Is the resistance 1 MΩ or
more?
Does the voltage indicate 2.0 V
←→ 2.5 V ←→ 3.0 V?
Is the oscilloscope wave form
the same waveform as shown
in the figure? <Ref. to
6MT(diag)-14, WAVEFORM,
MEASUREMENT, Driver's
Control Center Differential Con-
trol Module I/O Signal.>
Is the oscilloscope wave form
the same waveform as shown
in the figure? <Ref. to
6MT(diag)-14, WAVEFORM,
MEASUREMENT, Driver's
Control Center Differential Con-
trol Module I/O Signal.>
6MT(diag)-44
Yes No
Go to step 8. Repair the short
circuit of the har-
ness between the
driver's control
center differential
control module and
yaw rate & lateral
G sensor.
Repair the poor Go to step 9.
contact.
Go to step 10. Repair the poor
contact.
The yaw rate sen- Replace the yaw
sor circuit is cur- rate & lateral G
rently operating sensor.
properly. A tempo-
rary poor contact of
connector or har-
ness may be the
cause. Repair the
harness or con-
nectors between
the driver's control
center differential
control module and
yaw rate & lateral
G sensor.