Subaru Forester 2004 Service Manual page 42

Diagnostics Procedure without Diagnostic Trouble Code (DTC)
Step
1 CHECK BRAKE FLUID AMOUNT.
Check the amount of brake fluid in reservoir
tank of master cylinder.
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 park-
ing brake switch.
2) Release the parking brake.
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 (i12) from combi-
nation meter.
3) Turn the ignition switch to ON.
5 CHECK POOR CONTACT IN ABSCM&H/U.
Check
Is the brake fluid amount
between "MAX" line and "MIN"
line?
Is the resistance more than 1
MΩ?
Is the resistance more than 1
MΩ?
Does the brake warning light
go off?
Is there poor contact in
ABSCM&H/U connector?
ABS-41
ABS (DIAGNOSTIC)
Yes
Go to step 2. Fill the brake fluid
to specified
amount.
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 only.
<Ref. to ABS-8,
ABSCM (ABS
CONTROL MOD-
ULE), REPLACE,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>
No