Subaru 2002 IMPREZA Service Manual page 2136

DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
ABS (DIAGNOSTICS)
Step
1 CHECK DIAGNOSIS TERMINAL.
1)Turn the ignition switch to OFF.
2)Measure the resistance between diagnosis
terminals (B81) and chassis ground.
Terminals
Diagnosis terminal (A) — Chassis
ground:
Diagnosis terminal (B) — Chassis
ground:
2 CHECK DIAGNOSIS LINE.
1)Turn the ignition switch to OFF.
2)Connect the diagnosis terminal (B81) to
diagnosis connector (B82) No. 6.
3)Disconnect the connector from ABSCM&
H/U.
4)Measure the resistance between
ABSCM&H/U connector and chassis ground.
Connector & terminal
LHD: (B301) No. 4 — Chassis ground:
RHD: (F49) No. 4 — Chassis ground:
3 CHECK POOR CONTACT IN ABSCM&H/U
CONNECTOR.
Check
Is the resistance less than 0.5
Ω?
Is the resistance less than 0.5
Ω?
Is there poor contact in
ABSCM&H/U connector?
ABS-38
Yes
Go to step 2. Repair the diagno-
sis terminal har-
ness.
Go to step 3. Repair the har-
ness connector
between
ABSCM&H/U and
diagnosis connec-
tor.
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