ABS-43
ABS (DIAGNOSTICS)
DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
Step Check Yes No
1 CHECK ABS SENSOR.
1)Turn ignition switch to OFF.
2)Disconnect connector from ABS sensor.
3)Measure resistance of ABS sensor connec-
tor 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 resistance between 1
and 1.5 k
Ω
?
Go to step
2.
Replace ABS sen-
sor. Front: <Ref.
to ABS-14, Front
ABS Sensor.>
Rear: <Ref. to
ABS-17, Rear
ABS Sensor.>
2 CHECK BATTERY SHORT OF ABS SEN-
SOR.
1)Disconnect connector from ABSCM&H/U.
2)Measure voltage between ABS sensor and
chassis ground.
Terminal
Front RH No. 1 (+) — Chassis ground (
−
−−
−
):
Front LH No. 1 (+) — Chassis ground (
−
−−
−
):
Rear RH No. 2 (+) — Chassis ground (
−
−−
−
):
Rear LH No. 2 (+) — Chassis ground (
−
−−
−
):
Is the voltage less than 1 V? Go to step
3.
Replace ABS sen-
sor. Front: <Ref.
to ABS-14, Front
ABS Sensor.>
Rear: <Ref. to
ABS-17, Rear
ABS Sensor.>
3 CHECK BATTERY SHORT OF ABS SEN-
SOR.
1)Turn ignition switch to ON.
2)Measure voltage between ABS sensor and
chassis ground.
Terminal
Front RH No. 1 (+) — Chassis ground (
−
−−
−
):
Front LH No. 1 (+) — Chassis ground (
−
−−
−
):
Rear RH No. 2 (+) — Chassis ground (
−
−−
−
):
Rear LH No. 2 (+) — Chassis ground (
−
−−
−
):
Is the voltage less than 1 V? Go to step
4.
Replace ABS sen-
sor. Front: <Ref.
to ABS-14, Front
ABS Sensor.>
Rear: <Ref. to
ABS-17, Rear
ABS Sensor.>
4 CHECK HARNESS/CONNECTOR BETWEEN
ABSCM&H/U AND ABS SENSOR.
1)Turn ignition switch to OFF.
2)Connect connector to ABS sensor.
3)Measure resistance between ABSCM&H/U
connector terminals.
Connector & terminal
Trouble code 21 / (F49) No. 11 — No. 12:
Trouble code 23 / (F49) No. 9 — No. 10:
Trouble code 25 / (F49) No. 14 — No. 15:
Trouble code 27 / (F49) No. 7 — No. 8:
Is the resistance between 1
and 1.5 k
Ω
?
Go to step
5.
Repair harness/
connector
between
ABSCM&H/U and
ABS sensor.
5 CHECK BATTERY SHORT OF HARNESS.
Measure voltage between ABSCM&H/U con-
nector and chassis ground.
Connector & terminal
Trouble code 21 / (F49) No. 11 (+) —
Chassis ground (
−
−−
−
):
Trouble code 23 / (F49) No. 9 (+) — Chas-
sis ground (
−
−−
−
):
Trouble code 25 / (F49) No. 14 (+) —
Chassis ground (
−
−−
−
):
Trouble code 27 / (F49) No. 7 (+) — Chas-
sis ground (
−
−−
−
):
Is the voltage less than 1 V? Go to step
6.
Repair harness
between
ABSCM&H/U and
ABS sensor.
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