Subaru Legacy 2004 Service Manual page 3147

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step
1 CHECK LAN SYSTEM.
Perform the diagnosis for LAN system. <Ref. to
LAN(diag)-24, OPERATION, Read Diagnostic
Trouble Code (DTC).>
2 CHECK POOR CONTACT IN CONNECTORS. Is there poor contact in
3 CHECK VDCCM&H/U.
1) Connect all the connectors.
2) Erase the memory.
3) Perform the inspection mode.
4) Read the DTC.
Check
Is there any fault in LAN sys-
tem?
VDCCM&H/U connector?
Is the same DTC displayed?
VDC(diag)-74
Yes
Perform the diag- Go to step 2.
nosis according to
DTC for LAN sys-
tem.
Repair the con- Go to step 3.
nector.
Replace the Temporary poor
VDCCM&H/U. contact occurs.
<Ref. to VDC-7,
VDC Control Mod-
ule & Hydraulic
Control Unit
(VDCCM&H/U).>
No