Subaru IMPREZA GD 2007 Series Manual page 3174

asieps_tobira_IM_US.book 45 ページ ２０１２年１月１７日 火曜日 午後３時４８分
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
14 CHECK RESISTANCE OF THE ABS WHEEL
SPEED SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from the ABS
wheel speed sensor.
3) Measure the resistance of the ABS wheel
speed sensor connector terminals by shaking
the harness lightly.
Terminals
Front RH No. 1 — No. 2:
Front LH No. 1 — No. 2:
Rear RH No. 1 — No. 2:
Rear LH No. 1 — No. 2:
15 CHECK GROUND SHORT OF ABS WHEEL
SPEED SENSOR.
Measure the resistance between ABS wheel
speed sensor and chassis ground.
Terminals
Front RH No. 1 — Chassis ground:
Front LH No. 1 — Chassis ground:
Rear RH No. 1 — Chassis ground:
Rear LH No. 1 — Chassis ground:
16 CHECK HARNESS CONNECTOR BETWEEN
ABSCM&H/U AND ABS WHEEL SPEED
SENSOR.
1) Connect the connector to the ABS wheel
speed sensor.
2) Disconnect the ABSCM&H/U connectors.
3) Measure the resistance between
ABSCM&H/U connector terminals.
Connector & terminal
DTC 22
(B301) No. 6 — No. 5:
DTC 24
(B301) No. 1 — No. 16:
DTC 26
(B301) No. 19 — No. 4:
DTC 28
(B301) No. 3 — No. 2:
17 CHECK GROUND SHORT OF HARNESS.
Measure the resistance between the
ABSCM&H/U connector and chassis ground.
Connector & terminal
DTC 22
(B301) No. 6 — Chassis ground:
DTC 24
(B301) No. 1 — Chassis ground:
DTC 26
(B301) No. 19 — Chassis ground:
DTC 28
(B301) No. 3 — Chassis ground:
18 CHECK THE ABSCM&H/U GROUND CIR-
CUIT.
Measure the resistance between the
ABSCM&H/U and chassis ground.
Connector & terminal
(B301) No. 15 — Chassis ground:
19 CHECK POOR CONTACT OF CONNECTOR. Is there poor contact in connec-
Check
Is the resistance within the fol-
lowing? Front: 1 — 1.5 kΩ,
Rear: 1.025 — 1.265 kΩ
Is the resistance 1 MΩ or
more?
Is the resistance within the fol-
lowing? Front: 1 — 1.5 kΩ,
Rear: 1.025 — 1.265 kΩ
Is the resistance 1 MΩ or
more?
Is resistance less than 0.5 Ω?
tors between ABSCM&H/U and
ABS wheel speed sensor?
ABS(diag)-45
ABS (DIAGNOSTICS)
Yes No
Go to step 15. Replace the ABS
wheel speed sen-
sor. Front: <Ref. to
ABS-13, Front
ABS Wheel Speed
Sensor.> Rear:
<Ref. to ABS-16,
Rear ABS Wheel
Speed Sensor.>
Go to step 16.
Replace the ABS
wheel speed sen-
sor. Front: <Ref. to
ABS-13, Front
ABS Wheel Speed
Sensor.> Rear:
<Ref. to ABS-16,
Rear ABS Wheel
Speed Sensor.>
Go to step 17. Repair the harness
connector between
ABSCM&H/U and
ABS wheel speed
sensor.
Go to step 18. Repair the harness
connector between
ABSCM&H/U and
ABS wheel speed
sensor.
Go to step 19.
Repair the
ABSCM&H/U
ground harness.
Repair the connec- Go to step 20.
tor.