Subaru Legacy 2002 Service Manual page 2537

DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
VDC (Diagnostics)
No.
7 CHECK GROUND SHORT OF HARNESS.
1) Turn ignition switch to OFF.
2) Measure resistance between VDCCM con-
nector and chassis ground.
Connector & terminal
DTC 32/(F87) No. 3 — Chassis ground:
DTC 34/(F87) No. 51 — Chassis
ground:
DTC 36/(F87) No. 50 — Chassis
ground:
DTC 38/(F87) No. 4 — Chassis ground:
DTC 63/(F87) No. 29 — Chassis
ground:
DTC 64/(F87) No. 2 — Chassis ground:
8 CHECK HARNESS/CONNECTOR
BETWEEN VDCCM AND VDCH/U.
1) Connect connector (F91) to VDCH/U.
2) Measure resistance between VDCCM con-
nector and VDCH/U connector.
Connector & terminal
DTC 32/(F87) No. 3 — (VDC2) No. 1:
DTC 34/(F87) No. 51 — (VDC2) No. 1:
DTC 36/(F87) No. 50 — (VDC2) No. 1:
DTC 38/(F87) No. 4 — (VDC2) No. 1:
DTC 63/(F87) No. 29 — (VDC2) No. 1:
DTC 64/(F87) No. 2 — (VDC2) No. 1:
9 CHECK POOR CONTACT IN CONNEC-
TORS.
10 CHECK VDCCM.
1) Connect all connectors.
2) Erase the memory.
3) Perform inspection mode.
4) Read out the diagnostic trouble code.
11 CHECK ANY OTHER DIAGNOSTIC
TROUBLE CODES APPEARANCE.
Step
Is the resistance more than
1 MΩ?
Is the resistance between 3
and 6 Ω?
Is there poor contact in
connectors between
VDCCM and VDCH/U?
Is the same diagnostic
trouble code as in the cur-
rent diagnosis still being
output?
Are other diagnostic trouble
codes being output?
VDC-78
Check Yes
Go to step 8.
Go to step 9.
Repair connector.
Replace VDCCM.
<Ref. to VDC-9,
VDC Control Mod-
ule (VDCCM).>
Proceed with the
diagnosis corre-
sponding to the
diagnostic trouble
code.
No
Repair harness
between VDCCM
and VDCH/U.
Repair harness/
connector
between VDCCM
and VDCH/U.
Go to step 10.
Go to step 11.
A temporary poor
contact.