Subaru IMPREZA 2002 Service Manual page 217

DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
ABS IDIAGNOSTICS)
Step
I
CHECK IF OTHER WARNING LIGHTS TURN
ON.
Turn the ignition switch to ON (engine OFF).
2
CHECK ABS WARNING LIGHT BULB.
1)Turn the ignition switch to
OFF.
2)Remove the combination meter.
3)Remove the ABS warning light bulb from
combination meter.
CHECK BATTERY SHORT OF ABS WARN-
ING LIGHT HARNESS.
1)Disconnect the connector (B200) from con-
nector (F74).
2)Measure the voltage between connector
(8200) and chassis ground.
Connector & terminal
3
(6200) No. 19 (+)
-
Chassis ground (-):
S
CHECK BATTERY SHORT OF ABS WARN-
ING LIGHT HARNESS.
1)Turn the ignition switch to ON.
2)Measure the voltage between connector
(8200) and chassis ground.
Connector & terminal
(B200) No. 19 (+)
-
Chassis ground (-) :
5
CHECK WIRING HARNESS.
1)Turn the ignition switch to OFF.
2)lnstall the ABS warning light bulb from com-
bination meter.
3)lnstall the combination meter.
4)Turn the ignition switch to ON.
5)Measure the voltage between connector
(B200) and chassis ground.
Connector & terminal
(8200) No. 19 (+)
-
Chassis ground (-):
6
CHECK BATTERY SHORT OF ABS WARN-
ING LIGHT HARNESS.
1)Turn the ignition switch to OFF.
2)Measure the voltage between connector
(F74) and chassis ground.
Connector & terminal
(F74) No. 19 (+)
-
Chassis ground (-):
7
CHECK BATTERY SHORT OF ABS WARN-
ING LIGHT HARNESS.
1)Turn the ignition switch to ON.
2)Measure the voltage between connector
(F74) and chassis ground.
Connector & terminal
(F74) No. 19 (+)
-
Chassis ground (-):
CHECK GROUND CIRCUIT OF ABSCM&HIU
Measure the resistance between ABSCM&HlU
and chassis ground.
8
Connector & terminal
(F49) NO. 23
-
GND:
9 CHECK WIRING HARNESS.
Measure the resistance between connector
(F74) and chassis ground.
Connector & terminal
(F74) No. 19 (+)
-
Chassis ground (-):
Check
)o other warning lights turn
In?
s the ABS warning light bulb
IK?
s the voltage less than 3 V?
s the voltage less than 3 V?
s
the voltage between 10 and
5 V?
s the voltage less than 3 V?
s
the voltage less than 3
V?
s the resistance less than 0.5
2?
s the resistance less than 0.5
n?
Yes
io to step 2.
i o to step 3.
;o to step 4.
i o to step 5.
;o to step 6.
;o
to step 7.
;o
to step 8.
;o
to step 9.
20 to step 10.
No
3epair the combi-
iation meter.
cRef. to IDI-11,
Zombination
Weter Assembly.>
Replace the ABS
Narning light bulb.
<Ref. to IDI-11,
Zombination
Weter Assembly.>
Repair the warning
light harness.
Repair the warning
light harness.
Repair the wiring
harness.
Repair the wiring
harness.
Repair the wiring
harness.
Repair the
ABSCM&HlU
ground harness.
Repair the har-
nesslconnector.
ABS-31