Subaru Impreza 2003 Service Manual page 2379

DIAGNOSTICS PROCEDURE WITHOUT DIAGNOSTIC TROUBLE CODE (DTC)
Step
2 CHECK BRAKE FLUID LEVEL SWITCH.
1)Disconnect the level switch connector (B16)
from master cylinder.
2)Measure the resistance of master cylinder
terminals.
Terminals
No. 1 — No. 2:
3 CHECK PARKING BRAKE SWITCH.
1)Disconnect the connector (R4) from parking
brake switch.
2)Release the parking brake switch.
3)Measure the resistance between parking
brake switch terminal and chassis ground.
4 CHECK GROUND SHORT OF HARNESS.
1)Disconnect the connector form ABSCM & H/
U.
2)Disconnect the connector (i2) or (i1) from
combination meter.
3)Turn the ignition switch to ON.
5 CHECK POOR CONTACT IN ABSCM & H/U. Is there poor contact in
Check
Is the resistance more than 1
MΩ?
Is the resistance more than 1
MΩ?
Does the brake warning light
go off?
ABSCM & H/U connector?
ABS-39
ABS (DIAGNOSTICS)
Yes
Go to step 3. Replace the mas-
ter cylinder.
Go to step 4. Replace the park-
ing brake switch.
Go to step 5. Repair the har-
ness.
Repair the con- Replace the
nector. ABSCM&H/
U.<Ref. to ABS-7,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>
No