Subaru LEGACY 2003 Service Manual page 137

DIAGNOSTICS CHART WITH 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 INSTALLATION OF ABS SENSOR.
Are the ABS sensor installation bolts tightened
securely?
Tightening torque:
33 ± ± ± ± 10 N·m (3.3 ± ± ± ± 1.0 kgf-m, 24 ± ± ± ± 7 ft-lb)
3 CHECK ABS SENSOR GAP.
Measure tone wheel-to-pole piece gap over
entire perimeter of the wheel.
Is the measured value within the specified
range?
4 CHECK TONE WHEEL RUNOUT.
Measure tone wheel runout.
Is the measured value less than the specified
value?
5 CHECK POOR CONTACT IN CONNECTORS.
Turn ignition switch to OFF.
Is there poor contact in connectors between
VDCCM and ABS sensor?
6 CHECK VDCCM.
1) Connect all connectors.
2) Erase the memory.
3) Perform inspection mode.
4) Read out the diagnostic trouble code.
Is the same diagnostic trouble code as in
the current diagnosis still being output?
7 CHECK ANY OTHER DIAGNOSTIC TROU-
BLE CODES APPEARANCE.
Are other diagnostic trouble codes being out-
put?
Value
Change
Tightened securely.
Front wheel 0.3 - 0.8 mm
(0.012 - 0.031 in) and Rear
wheel 0.44 - 0.94 mm (0.0173 -
0.0370 in)
0.05 mm (0.0020 in)
There is poor contact.
Same pattern.
Other DTC indicated.
VDC-135
VDC (DIAGNOSTICS)
Yes
Go to step 2. Go to step 9.
Go to step 3. Tighten ABS sen-
sor installation
bolts securely.
Go to step 4. Adjust the gap.
NOTE:
Adjust the gap us-
ing spacers (Part
No. 26755AA000).
If spacers cannot
correct the gap, re-
place worn sensor
or worn
wheel.
Go to step 5. Repair tone wheel.
Front <Ref. to
VDC-29, Front
Tone Wheel.>
Rear <Ref. to
VDC-30, Rear
Tone Wheel.>
Repair connector. Go to step 6.
Replace VDCCM. Go to step 7.
<Ref. to VDC-8,
VDC Control Mod-
ule (VDCCM).>
Proceed with the A temporary poor
diagnosis corre- contact.
sponding to the
NOTE:
diagnostic trouble
Check
code.
and
between VDCCM
and ABS sensor.
No
tone
harness
connectors