Subaru Legacy 2002 Service Manual page 2617

DIAGNOSTICS CHART WITH SELECT MONITOR
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 31/(F87) No. 30 — Chassis
ground:
DTC 33/(F87) No. 24 — Chassis
ground:
DTC 35/(F87) No. 23 — Chassis
ground:
DTC 37/(F87) No. 31 — Chassis
ground:
DTC 61/(F87) No. 25 — Chassis
ground:
DTC 62/(F87) No. 26 — 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 31/(F87) No. 30 — (VDC2) No. 2:
DTC 33/(F87) No. 24 — (VDC2) No. 2:
DTC 35/(F87) No. 23 — (VDC2) No. 2:
DTC 37/(F87) No. 31 — (VDC2) No. 2:
DTC 61/(F87) No. 25 — (VDC2) No. 2:
DTC 62/(F87) No. 26 — (VDC2) No. 2:
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 7
and 10 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-158
Check Yes
Go to step 8.
Go to step 9.
Repair connector.
Repair 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.