Subaru LEGACY 2003 Service Manual page 273

DIAGNOSTICS CHART WITH SELECT MONITOR
Step
1 CHECK DRIVING TECHNIC.
Check the driver's technic.
Are the accelerator and brake pedals
depressed simultaneously while driving?
2 CHECK OUTPUT OF PRESSURE SENSOR
USING SELECT MONITOR.
1) Select "Current data display & Save" on the
select monitor.
2) Read pressure sensor output on the select
monitor display.
Is the measured value within the specified
range when brake pedal is depressed?
3 CHECK VDCCM.
1) Connect all connectors.
2) Erase the memory.
3) Perform inspection mode.
4) Read out the diagnostic trouble code.
Is the same diagnostic trouble code as in
the current diagnosis still being output?
4 CHECK ANY OTHER DIAGNOSTIC TROU-
BLE CODES APPEARANCE.
Are other diagnostic trouble codes being out-
put?
Value
Depressed.
0.48 — 0.72 V
Same DTC indicated.
Other DTC indicated.
VDC-271
VDC (DIAGNOSTICS)
Yes
The VDC is nor- Go to step 2.
mal. Erase the
diagnostic trouble
code.
NOTE:
Driving the vehicle
with both the ac-
celerator pedal
and brake pedal
depressed may
store a diagnostic
trouble code in the
memory.
Go to step 3. Replace VDCH/U.
<Ref. to VDC-8,
VDC Control Mod-
ule (VDCCM).>
Replace VDCCM. Go to step 4.
<Ref. to VDC-8,
VDC Control Mod-
ule (VDCCM).>
Proceed with the A temporary poor
diagnosis corre- contact.
sponding to the
diagnostic trouble
code.
No