Subaru Legacy 2003 - Page 143

VDC-141
VDC (DIAGNOSTICS)
DIAGNOSTICS CHART WITH SELECT MONITOR
Step Value Yes No
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?
Change Go to step 2. Go to step 8.
2 CHECK POOR CONTACT IN CONNECTORS.
Turn ignition switch to OFF.
Is there poor contact in connectors between
VDCCM and ABS sensor?
There is poor contact. Repair connector. Go to step 3.
3 CHECK SOURCES OF SIGNAL NOISE.
Is the car telephone or the wireless transmitter
properly installed?
Installed properly. Go to step 4. Properly install the
car telephone or
the wireless trans-
mitter.
4 CHECK SOURCES OF SIGNAL NOISE.
Are noise sources (such as an antenna)
installed near the sensor harness?
Installed Install the noise
sources apart from
the sensor har-
ness.
Go to step 5.
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 / (F45) No. 10 — Chassis
ground:
DTC 22 / (F2) No. 17 — Chassis ground:
DTC 24 / (F45) No. 10 — Chassis
ground:
DTC 24 / (F2) No. 17 — Chassis ground:
Is the measured value less than the speci-
fied value?
N
O
TE:
For the DTC 26 and 28, Go to step 6.
0.5 Ω Go to step 6. Repair shield har-
ness.
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?
Same pattern. Replace VDCCM.
<Ref. to VDC-8,
VDC Control Mod-
ule (VDCCM).>
Go to step 7.
7 CHECK ANY OTHER DIAGNOSTIC TROU-
BLE CODES APPEARANCE.
Are other diagnostic trouble codes being out-
put?
Other DTC indicated. Proceed with the
diagnosis corre-
sponding to the
diagnostic trouble
code.
A temporary noise
interference.
8 CHECK INSTALLATION OF ABS SENSOR.
Tightening torque:
33
±
±±
±
10 N·m (3.3
±
±±
±
1.0 kgf-m, 24
±
±±
±
7 ft-lb)
Are the ABS sensor installation bolts tightened
securely?
Tightened securely. Go to step 9. Tighten ABS sen-
sor installation
bolts securely.