Subaru Forester 2004 Service Manual page 106

Diagnostics Procedure with Diagnostic Trouble Code (DTC)
Step
1 CHECK OUTPUT OF ABS WHEEL SPEED
SENSOR USING SELECT MONITOR.
1) Select "Current data display & Save" on the
select monitor.
2) Read the ABS wheel speed sensor output
corresponding to faulty system in the select
monitor data display mode.
2 CHECK INSTALLATION OF ABS WHEEL
SPEED SENSOR.
3 CHECK ABS WHEEL SPEED SENSOR GAP.
Measure the tone wheel to ABS wheel speed
sensor piece gap over entire perimeter of the
wheel.
4 CHECK TONE WHEEL RUNOUT.
Measure the tone wheel runout.
5 CHECK POOR CONTACT IN CONNECTORS.
Turn the ignition switch to OFF.
6 CHECK ABSCM&H/U.
1) Connect all connectors.
2) Erase the memory.
3) Perform the inspection mode.
4) Read out the DTC.
7 CHECK ANY OTHER DIAGNOSTIC TROU-
BLE CODES (DTCs) APPEARANCE.
Check
Does the speed indicated on
display change in response to
speedometer reading during
acceleration/deceleration when
the steering wheel is in
straight-ahead position?
Are the ABS wheel speed sen-
sor installation bolts tightened
33 N·m (3.4 kgf-m, 24.6 ft-lb)?
Is the gap the following value?
Front wheel:
0.3 — 0.8 mm
(0.012 — 0.031 in)
Rear wheel
0.7 — 1.2 mm
(0.028 — 0.047 in)
Is the runout less than 0.05
mm (0.0020 in)?
Is there poor contact in con-
nectors between ABSCM&H/U
and ABS wheel speed sensor?
Is the same DTC as in the cur-
rent diagnosis still being out-
put?
Are other DTCs being output? Proceed with the
ABS-105
ABS (DIAGNOSTIC)
Yes
Go to step 2. Go to step 8.
Go to step 3. Tighten the ABS
wheel speed sen-
sor installation
bolts securely.
Go to step 4. Adjust the gap.
NOTE:
Adjust the gap us-
ing spacers (Part
No. 26755AA000).
If the spacers can-
not correct gap, re-
place worn ABS
wheel speed sen-
sor or worn tone
wheel.
Go to step 5. Replace the tone
wheel. Front: <Ref.
to ABS-21, Front
Tone Wheel.>
Rear: <Ref. to
ABS-22, Rear
Tone Wheel.>
Repair the con- Go to step 6.
nector.
Replace the Go to step 7.
ABSCM only.
<Ref. to ABS-8,
ABSCM (ABS
CONTROL MOD-
ULE), REPLACE,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>
A temporary poor
diagnosis corre- contact.
sponding to DTC.
NOTE:
Check the harness
and connectors be-
tween ABSCM&H/U
and ABS wheel
speed sensor.
No