Subaru IMPREZA 2002 Service Manual page 270

DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
ABS (DIAGNOSTICS)
Step
IO CHECK GROUND CIRCUIT OF ABSCM&H/U.
1)Turn the ignition switch to OFF.
2)Measure the resistance between
ABSCM&H/U connector and chassis ground.
Connector & terminal
(F49) No. 23
-
Chassis ground:
I1 CHECK MOTOR OPERATION.
Operate the sequence control. <Ref. to ABS-
11, ABS Sequence Control.>
NOTE:
Use the diagnosis connector to operate the se-
quence control.
12 CHECK POOR CONTACT IN CONNECTORS.
Turn the ignition switch to OFF.
1 3 CHECK ABSCM&H/U.
1)Connect all connectors.
2)Erase the memory.
3)Perform the inspection mode.
4)Read out the diagnostic trouble code.
1 4 CHECK ANY OTHER DIAGNOSTIC TROU-
BLE CODES APPEARANCE.
Check
Is the resistance less than 0.5
n?
Can motor revolution noise
(buzz) be heard when carrying
out the sequence control?
Is there poor contact in con-
nector between generator, bat-
tery and ABSCM&H/U?
Is the same diagnostic trouble
code as in the current diagno-
sis still being output?
Are other diagnostic trouble
:odes being output?
Yes
; o to step 11.
30 to step 12.
lepair the con-
lector.
leplace the
\BSCM&H/U.
:Ref. to ABS-7,
4BS Control Mod-
ile and Hydraulic
:ontrol Unit
ABSCM&H/U).>
'roceed with the
liagnosis corre-
iponding to the
liagnostic trouble
:ode.
No
3epair the
4BSCM&H/U
jround harness.
3eplace the
4BSCM&H/U.
:Ref. to ABS-7,
ABS Control Mod-
de and Hydraulic
>ontrol Unit
ABSCM&H/U)
.>
30 to step 13.
30
to step 14.
4 temporary poor
:ontact.
ABS-84