Subaru Legacy 2004 Service Manual page 3031

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ABS (DIAGNOSTICS)
Step
1 CHECK GROUND CIRCUIT OF ABSCM&H/U.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ABSCM&H/
U.
3) Measure the resistance between
ABSCM&H/U and chassis ground.
Connector & terminal
(B301) No. 15 — Chassis ground:
2 CHECK POOR CONTACT IN CONNECTOR. Is there poor contact in con-
3 CHECK SOURCES OF SIGNAL NOISE.
4 CHECK SOURCES OF SIGNAL NOISE.
5 CHECK ABSCM&H/U.
1) Connect all the connectors.
2) Erase the memory.
3) Perform the inspection mode.
4) Read the DTC.
6 CHECK ANY OTHER DTC ON DISPLAY.
Check
Is the resistance less than 0.5
&?
nectors between battery, igni-
tion switch and ABSCM&H/U?
Is the car telephone or the
radio properly installed?
Are noise sources (such as an
antenna) installed near the
sensor harness?
Is the same DTC displayed?
Is any other DTC displayed?
ABS(diag)-64
Yes
Go to step 2. Repair the
ABSCM&H/U
ground harness.
Repair the con- Go to step 3.
nector.
Go to step 4. Properly install the
car telephone or
the wireless trans-
mitter.
Install the noise Go to step 5.
sources apart from
the sensor har-
ness.
Replace the Go to step 6.
ABSCM only.
<Ref. to ABS-8,
REPLACEMENT,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>
Inspect the DTC Temporary poor
using "List of Diag- contact occurs.
nostic Trouble
Code (DTC)".
<Ref. to
ABS(diag)-39, List
of Diagnostic Trou-
ble Code (DTC).>
No