Subaru IMPREZA 2002 Service Manual page 343

m
DIAGNOSTICS CHART WITH SUBARU SELECT MONITOR
ABS (DIAGNOSTICS)
Is there poor contact in con-
nector between hydraulic unit,
relay box and ABSCM&H/U?
Is the same diagnostic trouble
code as in the current diagno-
sis still being output?
Are other diagnostic trouble
codes being output?
Step
I
CHECK MOTOR RELAY IN ABSCM&H/U.
Measure the resistance between ABSCM&H/U
terminals.
Terminals
NO. 25
-
NO. 2 6 :
Repair the con-
nector.
Replace the
ABSCM&H/U.
<Ref. to ABS-7,
ABS Control Mod-
ule and Hydraulic
Control Unit
(ABSCM&H/U).>
Proceed with the
diagnosis corre-
sponding to the
diagnostic trouble
code.
2 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.
3
CHECK POOR CONTACT IN CONNECTORS
Turn the ignition switch to OFF.
1 CHECK ABSCM&HN.
1
)Connect all connectors.
2)Erase the memory.
3)Perform the inspection mode.
4)Read out the diagnostic trouble code.
5
CHECK ANY OTHER DIAGNOSTIC TROU-
BLE CODES APPEARANCE.
Check
(buzz) be heard when carrying
out the sequence control?
No
?eplace the
4BSCM&H/U.
:Ref. to ABS-7,
4BS Control Mod-
Jle and Hydraulic
Zontrol Unit
:ABSCM&H/U).>
Replace the
4BSCM&H/U.
<Ref. to ABS-7,
4BS Control Mod-
de and Hydraulic
Zontrol Unit
(ABSCM&H/U).>
Go to step 4.
Go to step 5.
A temporary poor
contact.
ABS-I 57