Subaru Legacy 2003 Service Manual page 2910

DIAGNOSTICS CHART WITH SUBARU SELECT MONITOR
Step
1 CHECK SPECIFICATIONS OF THE AB-
SCM&H/U.
Check specifications of the mark to the
ABSCM&H/U.
CG: AT (except OUTBACK)
CH: MT (except OUTBACK)
CI: AT (OUTBACK)
CJ: MT (OUTBACK)
Do the vehicle specification and the specifica-
tion of ABSCM&HU match?
2 CHECK GROUND SHORT OF HARNESS.
1) Turn ignition switch to OFF.
2) Disconnect two connectors from TCM.
3) Disconnect connector from ABSCM&H/U.
4) Measure resistance between ABSCM&H/U
connector and chassis ground.
Connector & terminal
(F49) No. 3 — Chassis ground:
Does the measured value exceed the spec-
ified value?
3 CHECK TCM.
1) Connect all connectors to TCM.
2) Turn ignition switch to ON.
3) Measure voltage between TCM connector
terminal and chassis ground.
Connector & terminal
(B55) No. 21 (+) — Chassis ground ( − − − − ):
Is the measured value within the specified
range?
4 CHECK AT.
Is the AT functioning normally?
5 CHECK OPEN CIRCUIT OF HARNESS.
Measure voltage between ABSCM&H/U con-
nector and chassis ground.
Connector & terminal
(F49) No. 3 (+) — Chassis ground ( − − − − ):
(F49) No. 31 (+) — Chassis ground ( − − − − ):
Is the measured value within the specified
range?
6 CHECK POOR CONTACT IN CONNECTORS.
Is there poor contact in connectors between
TCM and ABSCM&H/U?
7 CHECK ABSCM&H/U.
1) Connect all connectors.
2) Erase the memory.
3) Perform inspection mode.
4) Read out the DTC.
Is the same DTC still being output?
8 CHECK ANY OTHER DTC APPEARANCE.
Are other DTC being output?
Value
Both are the same specifica-
tions.
1 MΩ
10 - 15 V
Function of AT is normal.
10 - 15 V
There is no poor contact.
Same DTC is not indicated.
Other DTC is not indicated.
ABS-119
ABS (DIAGNOSTICS)
Yes
Go to step 2. Replace
ABSCM&H/U.
<Ref. to ABS-6,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>
Go to step 3. Repair harness
between TCM and
ABSCM&H/U.
Go to step 5. Go to step 4.
Replace TCM. Repair AT.
Go to step 6. Repair harness/
connector
between TCM and
ABSCM&H/U.
Go to step 7. Repair connector.
Go to step 8. Replace
ABSCM&H/U.
<Ref. to ABS-6,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>
A temporary poor Proceed with the
contact. diagnosis corre-
sponding to the
DTC.
No