Subaru Legacy 2002 Service Manual page 2424

DIAGNOSTICS CHART WITH SUBARU SELECT MONITOR
No.
1 CHECK BATTERY SHORT OF HARNESS.
1) Turn ignition switch to OFF.
2) Disconnect two connectors from TCM.
3) Disconnect connector from ABSCM&H/U.
4) Measure voltage between ABSCM&H/U
connector and chassis ground.
Connector & terminal
(F49) No. 3 (+) — Chassis ground (−):
2 CHECK BATTERY SHORT OF HARNESS.
1) Turn ignition switch to ON.
2) Measure voltage between ABSCM&H/U
connector and chassis ground.
Connector & terminal
(F49) No. 3 (+) — Chassis ground (−):
3 CHECK OPEN CIRCUIT OF HARNESS.
1) Turn ignition switch to OFF.
2) Connect all connectors to TCM.
3) Turn ignition switch to ON.
4) Measure voltage between ABSCM&H/U
connector and chassis ground.
Connector & terminal
(F49) No. 3 (+) — Chassis ground (−):
(F49) No. 31 (+) — Chassis ground (−):
4 CHECK POOR CONTACT IN CONNEC-
TORS.
Turn ignition switch to OFF.
5 CHECK ABSCM&H/U.
1) Connect all connectors.
2) Erase the memory.
3) Perform inspection mode.
4) Read out the DTC.
6 CHECK ANY OTHER DTC APPEARANCE.
Step
Is the voltage less than 1
V?
Is the voltage less than 1
V?
Is the voltage between 10
and 13 V?
Is there poor contact in
connectors between TCM
and ABSCM&H/U?
Is the same DTC as in the
current diagnosis still being
output?
Are other DTC being out-
put?
ABS-123
Check Yes
Go to step 2.
Go to step 3.
Go to step 4.
Repair connector.
Replace
ABSCM&H/U.
<Ref. to ABS-6,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>
Proceed with the
diagnosis corre-
sponding to the
DTC.
ABS (Diagnostics)
No
Repair harness
between TCM and
ABSCM&H/U.
Repair harness
between TCM and
ABSCM&H/U.
Repair harness/
connector
between TCM and
ABSCM&H/U.
Go to step 5.
Go to step 6.
A temporary poor
contact.