Subaru LEGACY 2003 Service Manual page 203

DIAGNOSTICS CHART WITH SELECT MONITOR
Step
1 CHECK TACHOMETER OPERATION IN
COMBINATION METER.
Does tachometer operate normally?
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 RHD without OBD model
(F87) No. 9 — (B134) No. 10:
H4 engine RHD with OBD model
(F87) No. 9 — (B134) No. 30:
H4 engine LHD model
(F87) No. 9 — (B134) No. 10:
H6 engine model
(F87) No. 9 — (B136) No. 9:
Is the measured value less than the speci-
fied value?
3 CHECK POOR CONTACT IN CONNECTORS.
Is there poor contact in connectors between
VDCCM and ECM?
4 CHECK VDCCM.
1) Connect all connectors.
2) Erase the memory.
3) Perform inspection mode.
4) Read out the diagnostic trouble code.
Is the same diagnostic trouble code as in
the current diagnosis still being output?
5 CHECK ANY OTHER DIAGNOSTIC TROU-
BLE CODES APPEARANCE.
Are other diagnostic trouble codes being out-
put?
Value
Operates properly.
0.5 Ω
There is poor contact.
Same DTC indicated.
Other DTC indicated.
VDC-201
VDC (DIAGNOSTICS)
Yes
Go to step 2. Repair tachome-
ter.
Go to step 3. Repair harness
connector
between VDCCM
and ECM.
Repair connector. Go to step 4.
Replace VDCCM. Go to step 5.
<Ref. to VDC-8,
VDC Control Mod-
ule (VDCCM).>
Proceed with the A temporary poor
diagnosis corre- contact.
sponding to the
diagnostic trouble
code.
No