Subaru Legacy 2004 Service Manual page 2999

ABS Warning Light / Brake Warning Light Illumination Pattern
ABS (DIAGNOSTICS)
Step
1 CHECK ILLUMINATION OF OTHER LIGHTS.
Turn the ignition switch to ON. (engine OFF)
2 READ DTC.
Read the DTC. <Ref. to ABS(diag)-25, Read
Diagnostic Trouble Code (DTC).>
3 CHECK GROUND SHORT OF HARNESS.
1) Turn the ignition switch to OFF.
2) Disconnect the connector (B301) from
ABSCM&H/U.
3) Disconnect the connector (i10) from the
combination meter.
4) Measure the resistance between ABSCM
connector and chassis ground.
Connector & terminal
(B301) No. 22 — Chassis ground:
4 CHECK ABSCM.
1) Connect the connector (B301) to the
ABSCM&H/U.
2) Turn the ignition to ON.
3) Immediately after turning ignition switch to
ON (within 1.5 seconds), measure the resis-
tance of harness between the combination
meter connector and chassis ground.
Connector & terminal
(i10) No. 5 — Chassis ground:
Check
Do other warning lights illumi-
nate?
Is DTC displayed?
Is the resistance more than 1
M&?
Is the resistance more than 1
M&?
ABS(diag)-32
Yes
Go to step 2. Check the combi-
nation meter.
Perform the diag- Go to step 3.
nosis according to
DTC.
Go to step 4. Repair the har-
ness and connec-
tor between
ABSCM&H/U and
combination meter
connector.
Check the combi- Replace the
nation meter. ABSCM only.
<Ref. to ABS-8,
REPLACEMENT,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>
No