Subaru Legacy 2003 Service Manual page 2886

DIAGNOSTICS CHART WITH SUBARU SELECT MONITOR
Step
1 CHECK OUTPUT OF ABS SENSOR USING
SELECT MONITOR.
1) Select "Current data display & Save" on the
select monitor.
2) Read the ABS sensor output corresponding
to the faulty system in the select monitor
data display mode.
Does the speed indicated on the display
change in response to the speedometer
reading during acceleration/deceleration
when the steering wheel is in the straight-
ahead position?
2 CHECK POOR CONTACT IN CONNECTORS.
Turn ignition switch to OFF.
Is there poor contact in connectors between
ABSCM&H/U and ABS sensor?
3 CHECK SOURCES OF SIGNAL NOISE.
Is the car telephone or the wireless transmitter
properly installed?
4 CHECK SOURCES OF SIGNAL NOISE.
Are noise sources (such as an antenna)
installed near the sensor harness?
5 CHECK SHIELD CIRCUIT.
1) Turn ignition switch to OFF.
2) Connect all connectors.
3) Measure resistance between shield con-
nector and chassis ground.
Connector & terminal
DTC 22 / LHD: (F45) No. 13 — Chassis
ground:
RHD: (F2) No. 14 — Chassis ground:
DTC 24 / LHD: (F45) No. 10 — Chassis
ground:
RHD: (F2) No. 17 — Chassis ground:
Is the measured value less than the speci-
fied value?
NOTE:
For the DTC 26 and 28:
Go to step 6.
6 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?
7 CHECK ANY OTHER DTC APPEARANCE.
Are other DTC being output?
8 CHECK INSTALLATION OF ABS SENSOR.
Are the ABS sensor installation bolts tightened
with the specified torque?
Value
Change as same.
There is no poor contact.
Installed properly.
Noise source is not installed
near the sensor harness.
0.5 Ω
Same DTC is not indicated.
Other DTC is not indicated.
33±10 N·m (3.4±1.0 kgf-m,
25±7 ft-lb)
ABS-95
ABS (DIAGNOSTICS)
Yes
Go to step 2. Go to step 8.
Go to step 3. Repair connector.
Go to step 4. Properly install the
car telephone or
the wireless trans-
mitter.
Go to step 5. Install the noise
sources apart from
the sensor har-
ness.
Go to step 6. Repair shield har-
ness.
Go to step 7. Replace
ABSCM&H/U.
<Ref. to ABS-6,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>
A temporary noise Proceed with the
interference. diagnosis corre-
sponding to the
DTC.
Go to step 9. Tighten ABS sen-
sor installation
bolts securely.
No