Subaru LEGACY 2003 Service Manual page 179

DIAGNOSTICS CHART WITH SELECT MONITOR
Step
1 CHECK RESISTANCE OF HARNESS.
1) Turn ignition switch to OFF.
2) Disconnect two connectors from TCM.
3) Measure resistance between TCM connec-
tor terminals.
Connector & terminal
(B56) No. 9 — No. 18:
Is the measured value within the specified
range?
2 CHECK POOR CONTACT IN CONNECTORS.
Is there poor contact in TCM connectors?
3 CHECK TCM.
1) Turn ignition switch to OFF.
2) Connect all connectors.
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?
4 CHECK ANY OTHER DIAGNOSTIC TROU-
BLE CODES APPEARANCE.
Are other diagnostic trouble codes being out-
put?
Value
57 — 63 Ω
There is poor contact.
Same DTC indicated.
Other DTC indicated.
VDC-177
VDC (DIAGNOSTICS)
Yes
Go to step 2. Repair harness
between TCM and
VDCCM.
Repair connector. Go to step 3.
Replace TCM. Go to step 4.
<Ref. to AT-76,
Transmission Con-
trol Module
(TCM).>
Proceed with the A temporary poor
diagnosis corre- contact.
sponding to the
diagnostic trouble
code.
No