Subaru Legacy 2002 Service Manual page 2520

DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
No.
8 CHECK RESISTANCE OF ABS SENSOR.
1) Turn ignition switch OFF.
2) Disconnect connector from ABS sensor.
3) Measure resistance between ABS sensor
connector terminals.
Terminal
Front RH No. 1 — No. 2:
Front LH No. 1 — No. 2:
Rear RH No. 1 — No. 2:
Rear LH No. 1 — No. 2:
9 CHECK GROUND SHORT OF ABS SEN-
SOR.
Measure resistance between ABS sensor and
chassis ground.
Terminal
Front RH No. 1 — Chassis ground:
Front LH No. 1 — Chassis ground:
Rear RH No. 1 — Chassis ground:
Rear LH No. 1 — Chassis ground:
10 CHECK HARNESS/CONNECTOR
BETWEEN VDCCM AND ABS SENSOR.
1) Connect connector to ABS sensor.
2) Disconnect connector from VDCCM.
3) Measure resistance at VDCCM connector
terminals.
Connector & terminal
DTC 22 / (F87) No. 14 — No. 15:
DTC 24 / (F87) No. 49 — No. 19:
DTC 26 / (F87) No. 18 — No. 46:
DTC 28 / (F87) No. 16 — No. 17:
11 CHECK GROUND SHORT OF HARNESS.
Measure resistance between VDCCM connec-
tor and chassis ground.
Connector & terminal
DTC 22 / (F87) No. 14 — Chassis
ground:
DTC 24 / (F87) No. 49 — Chassis
ground:
DTC 26 / (F87) No. 18 — Chassis
ground:
DTC 28 / (F87) No. 16 — Chassis
ground:
12 CHECK GROUND CIRCUIT OF VDCCM.
Measure resistance between VDCCM and
chassis ground.
Connector & terminal
(F87) No. 1 — Chassis ground:
(F87) No. 55 — Chassis ground:
13 CHECK POOR CONTACT IN CONNEC-
TORS.
14 CHECK SOURCES OF SIGNAL NOISE.
15 CHECK SOURCES OF SIGNAL NOISE.
Step
Is the resistance between
1.0 and 1.5 kΩ?
Is the resistance more than
1 MΩ?
Is the resistance between
1.0 and 1.5 kΩ?
Is the resistance more than
1 MΩ?
Is the resistance less than
0.5 Ω?
Is there poor contact in
connectors between
VDCCM and ABS sensor?
Is the car telephone or the
wireless transmitter prop-
erly installed?
Are noise sources (such as
an antenna) installed near
the sensor harness?
VDC-61
Check Yes
Go to step 9.
Go to step 10.
Go to step 11.
Go to step 12.
Go to step 13.
Repair connector.
Go to step 15.
Install the noise
sources apart
from the sensor
harness.
VDC (Diagnostics)
No
Replace ABS sen-
sor. Front <Ref. to
VDC-28, Front
ABS Sensor.>
Rear <Ref. to
VDC-29, Rear
ABS Sensor.>
Replace ABS sen-
sor. Front <Ref. to
VDC-28, Front
ABS Sensor.>
Rear <Ref. to
VDC-29, Rear
ABS Sensor.>
Repair harness/
connector
between VDCCM
and ABS sensor.
Repair harness/
connector
between VDCCM
and ABS sensor.
Repair VDCCM
ground harness.
Go to step 14.
Properly install
the car telephone
or the wireless
transmitter.
Go to step 16.