Subaru Legacy 2003 Service Manual page 2839

DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
ABS (DIAGNOSTICS)
7 CHECK TONE WHEEL RUNOUT.
Measure tone wheel runout.
Is the measured value less than the specified
value?
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:
Is the measured value within the specified
range?
9 CHECK GROUND SHORT OF ABS SENSOR.
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:
Does the measured value exceed the specified
value?
10 CHECK HARNESS/CONNECTOR BETWEEN
ABSCM&H/U AND ABS SENSOR.
1) Connect connector to ABS sensor.
2) Disconnect connector from ABSCM&H/U.
3) Measure resistance at ABSCM&H/U con-
nector terminals.
Connector & terminal
DTC 22 / (F49) No. 11 — No. 12:
DTC 24 / (F49) No. 9 — No. 10:
DTC 26 / (F49) No. 14 — No. 15:
DTC 28 / (F49) No. 7 — No. 8:
Is the measured value within the specified
range?
11 CHECK GROUND SHORT OF HARNESS.
Measure resistance between ABSCM&H/U
connector and chassis ground.
Connector & terminal
DTC 22 / (F49) No. 11 — Chassis
ground:
DTC 24 / (F49) No. 9 — Chassis ground:
DTC 26 / (F49) No. 14 — Chassis
ground:
DTC 28 / (F49) No. 7 — Chassis ground:
Does the measured value exceed the specified
value?
Step Value
0.05 mm (0.0020 in)
1 - 1.5 kΩ
1 MΩ
1 - 1.5 kΩ
1 MΩ
ABS-48
Yes
Go to step 8. Replace tone
wheel. Front:
<Ref. to ABS-19,
Front Tone
Wheel.> Rear:
<Ref. to ABS-20,
Rear Tone
Wheel.>
Go to step 9. Replace ABS sen-
sor. Front: <Ref.
to ABS-12, Front
ABS Sensor.>
Rear: <Ref. to
ABS-15, Rear
ABS Sensor.>
Go to step 10. Replace ABS sen-
sor. Front: <Ref.
to ABS-12, Front
ABS Sensor.>
Rear: <Ref. to
ABS-15, Rear
ABS Sensor.>
Go to step 11. Repair harness/
connector
between
ABSCM&H/U and
ABS sensor.
Go to step 12. Repair harness/
connector
between
ABSCM&H/U and
ABS sensor.
No