Subaru LEGACY 2003 Service Manual page 276

DIAGNOSTICS CHART WITH SELECT MONITOR
VDC (DIAGNOSTICS)
7 CHECK BRAKE PEDAL STROKE.
Measure the stroke between non-forced pedal
position and forced pedal position with 50 kg
(110 lb).
Is the measured value less than the specified
value?
8 CHECK INPUT VOLTAGE OF PRESSURE
SENSOR.
1) Depress the brake pedal with 50 kg (110
lb).
2) Measure voltage between VDCCM connec-
tor terminals.
Connector & terminal
A (F87) No. 77 (+) — No. 76 ( − − − − ):
B (F87) No. 36 (+) — No. 76 ( − − − − ):
Does the voltage difference between A and
B exceed the specified value?
9 CHECK POOR CONTACT IN CONNECTORS.
Is there poor contact in connector between
VDCCM and pressure sensor?
10 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?
11 CHECK ANY OTHER DIAGNOSTIC TROU-
BLE CODES APPEARANCE.
Are other diagnostic trouble codes being out-
put?
Step Value
95 mm (3.74 in)
0.2 V
There is poor contact.
Same DTC indicated.
Other DTC indicated.
VDC-274
Yes
Go to step 8. Perform bleeding
from brake sys-
tem.
Go to step 9. Replace VDCH/U.
<Ref. to VDC-8,
VDC Control Mod-
ule (VDCCM).>
Repair connector. Go to step 10.
Replace VDCCM. Go to step 11.
<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