Subaru Legacy 2004 Service Manual page 2986

Step
1 CHECK IGNITION SWITCH.
2 CHECK BATTERY.
1) Turn the ignition switch to OFF.
2) Measure the battery voltage.
3 CHECK BATTERY TERMINAL.
4 CHECK SUBARU SELECT MONITOR COM-
MUNICATION.
1) Turn the ignition switch to ON.
2) Using Subaru Select Monitor, check
whether communication to other system can
be executed normally.
5 CHECK SUBARU SELECT MONITOR COM-
MUNICATION.
1) Turn the ignition switch to OFF.
2) Disconnect the ABSCM&H/U connector.
3) Turn the ignition switch to ON.
4) Check whether communication to other
systems can be executed normally.
6 CHECK HARNESS CONNECTOR BETWEEN
EACH CONTROL MODULE AND DATA LINK
CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect ABSCM&H/U, ECM and TCM.
3) Measure the resistance between data link
connector and chassis ground.
Connector & terminal
(B40) No. 10 — Chassis ground:
7 CHECK OUTPUT SIGNAL FOR ABSCM&H/
U.
1) Turn the ignition switch to ON.
2) Measure the voltage between ABSCM&H/
U and chassis ground.
Connector & terminal
(B40) No. 10 (+) — Chassis ground (
8 CHECK HARNESS CONNECTOR BETWEEN
ABSCM&H/U AND DATA LINK CONNEC-
TOR.
Measure the resistance between ABSCM&H/U
connector and data link connector.
Connector & terminal
(B301) No. 7 — (B40) No. 10:
9 CHECK INSTALLATION OF ABSCM&H/U
CONNECTOR.
Turn the ignition switch to OFF.
10 CHECK POWER SUPPLY CIRCUIT.
1) Turn the ignition switch to ON. (engine
OFF)
2) Measure the ignition power supply voltage
between ABSCM&H/U connector and chassis
ground.
Connector & terminal
(B301) No. 18 (+) — Chassis ground (
Subaru Select Monitor
Check
Does the ignition switch turn to
ON?
Is the voltage more than 11 V? Go to step 3.
Is there poor contact at battery
terminal?
Is the system name and model
year displayed on Subaru
Select Monitor?
Is the system name and model
year displayed on Subaru
Select Monitor?
Is the resistance more than 1
M&?
Is the voltage less than 1 V?
#
):
Is the resistance less than 0.5
&?
Is the ABSCM&H/U connector
inserted into ABSCM&H/U until
it is locked by clamps?
Is the voltage 10 — 15 V?
#
):
ABS(diag)-19
ABS (DIAGNOSTICS)
Yes
Go to step 2. Turn the ignition
switch to ON, and
select ABS mode
using Subaru
Select Monitor.
Charge or replace
the battery.
Repair or tighten Go to step 4.
the battery termi-
nal.
Go to step 8. Go to step 5.
Replace Go to step 6.
ABSCM&H/U.
<Ref. to ABS-6,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>
Go to step 7. Repair the har-
ness and connec-
tor between each
control module
and data link con-
nector.
Go to step 8. Repair the har-
ness and connec-
tor between each
control module
and data link con-
nector.
Go to step 9. Repair the har-
ness and connec-
tor between
ABSCM&H/U and
data link connec-
tor.
Go to step 10. Insert ABSCM&H/
U connector into
ABSCM&H/U.
Go to step 11. Repair the open
circuit in harness
between
ABSCM&H/U and
battery.
No