Subaru Legacy 2002 Service Manual page 2562

DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
No.
1 CHECK TACHOMETER OPERATION IN
COMBINATION METER.
2 CHECK HARNESS BETWEEN VDCCM AND
ECM.
1) Turn ignition switch to OFF.
2) Disconnect connector from VDCCM and
ECM.
3) Measure resistance between VDCCM con-
nector and ECM.
Connector & terminal
H4 ENGINE MODEL
(B134) No. 30 — Chassis ground:
H6 ENGINE MODEL
(F87) No. 9 — (B136) No. 9:
3 CHECK POOR CONTACT IN CONNEC-
TORS.
4 CHECK VDCCM.
1) Connect all connectors.
2) Erase the memory.
3) Perform inspection mode.
4) Read out the diagnostic trouble code.
5 CHECK ANY OTHER DIAGNOSTIC
TROUBLE CODES APPEARANCE.
Step
Does tachometer operate
normally?
Is the resistance less than
0.5 Ω?
Is there poor contact in
connectors between
VDCCM and ECM?
Is the same diagnostic
trouble code as in the cur-
rent diagnosis still being
output?
Are other diagnostic trouble
codes being output?
VDC-103
Check Yes
Go to step 2.
Go to step 3.
Repair connector.
Replace VDCCM.
<Ref. to VDC-9,
VDC Control Mod-
ule (VDCCM).>
Proceed with the
diagnosis corre-
sponding to the
diagnostic trouble
code.
VDC (Diagnostics)
No
Repair tachom-
eter.
Repair harness
connector
between VDCCM
and ECM.
Go to step 4.
Go to step 5.
A temporary poor
contact.