Subaru IMPREZA 2001 - Page 31

ABS-30
ABS (DIAGNOSTICS)
DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
Step Check Yes No
1 CHECK IF OTHER WARNING LIGHTS TURN
ON.
Turn ignition switch to ON (engine OFF).
Do other warning lights turn
on?
Go to step
2.
Repair combina-
tion meter. <Ref.
to IDI-19, Combi-
nation Meter
Assembly.>
2 CHECK ABS WARNING LIGHT BULB.
1)Turn ignition switch to OFF.
2)Remove combination meter.
3)Remove ABS warning light bulb from combi-
nation meter.
Is ABS warning light bulb OK? Go to step
3.
Replace ABS
warning light bulb.
<Ref. to IDI-19,
Combination
Meter Assembly.>
3 CHECK BATTERY SHORT OF ABS WARN-
ING LIGHT HARNESS.
1)Disconnect connector (B200) from connector
(F74).
2)Measure voltage between connector (B200)
and chassis ground.
Connector & terminal
LHD: (B200) No. 19 (+) — Chassis
ground (
−
−−
− ):
RHD: (B200) No .20 (+) — Chassis
ground ( −
−−
− ):
Is the voltage less than 3 V? Go to step
4.
Repair warning
light harness.
4 CHECK BATTERY SHORT OF ABS WARN-
ING LIGHT HARNESS.
1)Turn ignition switch to ON.
2)Measure voltage between connector (B200)
and chassis ground.
Connector & terminal
LHD: (B200) No. 19 (+) — Chassis
ground ( −
−−
− ):
RHD: (B200) No .20 (+) — Chassis
ground ( −
−−
− ):
Is the voltage less than 3 V? Go to step
5.
Repair warning
light harness.
5 CHECK WIRING HARNESS.
1)Turn ignition switch to OFF.
2)Install ABS warning light bulb from combina-
tion meter.
3)Install combination meter.
4)Turn ignition switch to ON.
5)Measure voltage between connector (B200)
and chassis ground.
Connector & terminal
LHD: (B200) No. 19 (+) — Chassis
ground ( −
−−
− ):
RHD: (B200) No .20 (+) — Chassis
ground ( −
−−
− ):
Is the voltage between 10 and
15 V?
Go to step
6.
Repair wiring har-
ness.
6 CHECK BATTERY SHORT OF ABS WARN-
ING LIGHT HARNESS.
1)Turn ignition switch to OFF.
2)Measure voltage between connector (F74)
and chassis ground.
Connector & terminal
LHD: (F74) No. 19 (+) — Chassis ground
( −
−−
− ):
RHD: (F74) No .20 (+) — Chassis ground
( −
−−
− ):
Is the voltage less than 3 V? Go to step
7.
Repair wiring har-
ness.