Subaru Legacy 2003 - Page 54

VDC-52
VDC (DIAGNOSTICS)
DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
5 CHECK BATTERY SHORT OF HARNESS.
Measure voltage between VDCCM connector
and chassis ground.
Connector & terminal
DTC 21 / (F87) No. 14 (+) — Chassis
ground (
−
−−
−
):
DTC 23 / (F87) No. 49 (+) — Chassis
ground (
−
−−
−
):
DTC 25 / (F87) No. 18 (+) — Chassis
ground (
−
−−
−
):
DTC 27 / (F87) No. 16 (+) — Chassis
ground (
−
−−
−
):
Is the measured value less than the specified
value?
1 V Go to step 6. Repair harness
between VDCCM
and ABS sensor.
6 CHECK BATTERY SHORT OF HARNESS.
1) Turn ignition switch to ON.
2) Measure voltage between VDCCM connec-
tor and chassis ground.
Connector & terminal
DTC 21 / (F87) No. 14 (+) — Chassis
ground (
−
−−
−
):
DTC 23 / (F87) No. 49 (+) — Chassis
ground (
−
−−
−
):
DTC 25 / (F87) No. 18 (+) — Chassis
ground (
−
−−
−
):
DTC 27 / (F87) No. 16 (+) — Chassis
ground (
−
−−
−
):
Is the measured value less than the speci-
fied value?
1 V Go to step 7. Repair harness
between VDCCM
and ABS sensor.
7 CHECK INSTALLATION OF ABS SENSOR.
Tightening torque:
33
±
±±
±
10 N·m (3.3
±
±±
±
1.0 kgf-m, 24
±
±±
±
7 ft-lb)
Are the ABS sensor installation bolts tightened
securely?
Tightened securely. Go to step 8. Tighten ABS sen-
sor installation
bolts securely.
8 CHECK ABS SENSOR GAP.
Measure tone wheel-to-pole piece gap over
entire perimeter of the wheel.
Is the measured value within the specified
range?
Front wheel 0.3 - 0.8 mm
(0.012 - 0.031 in) and Rear
wheel 0.44 - 0.94 mm (0.0173 -
0.0370 in)
Go to step 9. Adjust the gap.
N
O
TE:
Adjust the gap us-
ing spacers (Part
No. 26755AA000).
If spacers cannot
correct the gap, re-
place worn sensor
or worn tone
wheel.
9 CHECK HUB AND TONE WHEEL RUNOUT.
Measure hub and tone wheel runout.
Is the measured value less than the specified
value?
0.05 mm (0.0020 in) Go to step 10. Repair hub and
tone wheel. Front
<Ref. to VDC-27,
Front ABS Sen-
sor.> Rear <Ref.
to VDC-28, Rear
ABS Sensor.>
10 CHECK POOR CONTACT IN CONNECTORS.
Is there poor contact in connectors between
VDCCM and ABS sensor?
There is poor contact. Repair connector. Go to step 11.
Step Value Yes No