Subaru LEGACY 2006 Manual page 4234

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step
1 CHECK STEERING WHEEL.
1) Drive the vehicle on a flat road.
2) Park the vehicle straight.
3) Check the steering wheel for deviation from
center.
2 CHECK DRIVING PLACE.
Check if the vehicle ran the road with banks or
sandy surface (which does not mean a dirt
road).
3 CHECK OUTPUT OF STEERING ANGLE
SENSOR WITH SUBARU SELECT MONI-
TOR.
1) Select {Current Data Display & Save} in
Subaru Select Monitor.
2) Read the steering angle sensor output dis-
played on display.
4 CHECK THE VDCCM&H/U.
1) Turn the ignition switch to OFF.
2) Connect all the connectors.
3) Erase the memory.
4) Perform the Inspection Mode.
5) Read the DTC.
5 CHECK OTHER DTC DETECTION.
Check
Is the deviation from the center
of steering wheel less than 5°?
Did the vehicle run the road
with banks or sandy surface
(which does not mean a dirt
road)?
Does the steering angle sensor
output value on the display
vary in accordance with steer-
ing operation when turning the
steering wheel to the right or
left?
Is the same DTC displayed?
Is any other DTC displayed?
VDC(diag)-88
Yes No
Go to step 2. Perform the cen-
tering adjustment
of steering wheel.
Go to step 3.
VDCCM&H/U may
record DTC when
the vehicle ran the
road with banks or
sandy surface
(which does not
mean a dirt road).
Go to step 4.
Replace the steer-
ing angle sensor.
Replace the Go to step 5.
VDCCM&H/U.
<Ref. to VDC-7,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>
Perform the diag- Temporary poor
nosis according to contact occurs.
DTC.