Subaru LEGACY 2003 Service Manual page 181

DIAGNOSTICS CHART WITH SELECT MONITOR
Step
5 CHECK VDCCM.
1) Install original TCM.
2) Replace VDCCM. <Ref. to VDC-8, VDC
Control Module (VDCCM).>
3) Erase the memory.
4) Perform inspection mode.
5) Read out the diagnostic trouble code.
Is the same diagnostic trouble code as in
the current diagnosis still being output?
6 CHECK VDCCM.
Is the same diagnostic trouble code as in the
current diagnosis still being output?
Value
Same DTC indicated.
Same DTC indicated.
VDC-179
VDC (DIAGNOSTICS)
Yes
Go to step 6. The original
VDCCM has been
faulty.
Replace TCM. Proceed with the
<Ref. to AT-76, diagnosis corre-
Transmission Con- sponding to the
trol Module diagnostic trouble
(TCM).> code.
No