Subaru Forester 2004 Service Manual page 34

Diagnostics Procedure without Diagnostic Trouble Code (DTC)
Step
7 CHECK BATTERY SHORT OF ABS AND
BRAKE WARNING LIGHT HARNESS.
1) Turn the ignition switch to ON.
2) Measure the voltage between connector
(B37) or (F45) and chassis ground.
Connector & terminal
LHD: (B37) No. 23 (+) — Chassis ground
−
( ):
RHD: (F45) No. 13 (+) — Chassis ground
−
( ):
8 CHECK GROUND CIRCUIT OF ABSCM&H/U.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ABSCM&H/U.
3) Measure the resistance between
ABSCM&H/U and chassis ground.
Connector & terminal
LHD: (B301) No. 23 — Chassis ground:
RHD: (F49) No. 23 — Chassis ground:
9 CHECK WIRING HARNESS.
Measure the resistance between connector
(B37) or (F45) and chassis ground.
Connector & terminal
LHD: (B37) No. 23 — Chassis ground:
RHD: (F45) No. 13 — Chassis ground:
10 CHECK POOR CONTACT IN CONNECTORS.
Turn the ignition switch to OFF.
Check
Is the voltage less than 3 V?
Is the resistance less than 0.5
Ω?
Is the resistance less than 0.5
Ω?
Is there poor contact in con-
nectors between combination
meter and ABSCM&H/U?
ABS-33
ABS (DIAGNOSTIC)
Yes
Go to step 8. Repair the wiring
harness.
Go to step 9. Repair the
ABSCM&H/U
ground harness.
Go to step 10. Repair the har-
ness connector.
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