Subaru Impreza 2003 Service Manual page 2342

ABS (DIAGNOSTICS)
1. Basic Diagnostic Procedure
A: PROCEDURE
1. WITHOUT SUBARU SELECT MONITOR
CAUTION:
Remove foreign matter (dust, water, etc.) from the ABSCM&H/U connector during removal and instal-
lation.
NOTE:
• To check the harness for broken wires or short circuits, shake it while holding it or the connector.
• When the ABS warning light illuminates, read and record the DTC indicated by ABS warning light.
Step
1 CHECK PRE-INSPECTION.
1)Ask the customer when and how trouble
occurred using interview checklist. <Ref. to
ABS-5, Check List for Interview.>
2)Before performing diagnosis, inspect the unit
which might influence ABS problem. <Ref. to
ABS-9, INSPECTION, General Description.>
2 CHECK INDICATION OF DTC.
Calling up the DTC. <Ref. to ABS-20, Read
Diagnostic Trouble Code (DTC).>
Record all DTCs.
3 PERFORM THE GENERAL DIAGNOSTICS.
1)Inspect using "General Diagnostics Table".
<Ref. to ABS-192, General Diagnostics
Table.>
2)Perform the clear memory mode. <Ref. to
ABS-22, WITHOUT SUBARU SELECT MONI-
TOR, OPERATION, Clear Memory Mode.>
3)Perform the inspection mode. <Ref. to ABS-
21, Inspection Mode.>
Calling up the DTC. <Ref. to ABS-20, Read
Diagnostic Trouble Code (DTC).>
4 PERFORM THE DIAGNOSIS.
1)Repair trouble cause.
NOTE:
For DTC list, refer to "List of DTC".<Ref. to
ABS-24, WITHOUT SUBARU SELECT MONI-
TOR, LIST, List of Diagnostic Trouble Code
(DTC).>
2)Perform the clear memory mode. <Ref. to
ABS-22, WITHOUT SUBARU SELECT MONI-
TOR, OPERATION, Clear Memory Mode.>
3)Perform the inspection mode. <Ref. to ABS-
21, Inspection Mode.>
4)Calling up the DTC. <Ref. to ABS-20, Read
Diagnostic Trouble Code (DTC).>
BASIC DIAGNOSTIC PROCEDURE
Is the unit that might influence
the ABS problem normal?
Is only the start code issued?
Is only the start code issued?
Is only the start code issued?
ABS-2
Check
Go to step 2.
Go to step 3.
Complete the
diagnosis.
Complete the
diagnosis.
Yes No
Repair or replace
each unit.
Go to step 4.
Go to step 4.
Repeat the step 4
until only start
code is issued.