Subaru Impreza 2003, Service Manual

Page: 2342 / 3610

ABS-2
ABS (DIAGNOSTICS)
BASIC DIAGNOSTIC PROCEDURE
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 Check Yes No
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.>
Is the unit that might influence
the ABS problem normal? Go to step 2. Repair or replace
each unit.
2 CHECK INDICATION OF DTC.
Calling up the DTC. <Ref. to ABS-20, Read
Diagnostic Trouble Code (DTC).>
Record all DTCs.
Is only the start code issued? Go to step 3. Go to step 4.
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).>
Is only the start code issued? Complete the
diagnosis. Go to step 4.
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).>
Is only the start code issued? Complete the
diagnosis. Repeat the step 4
until only start
code is issued.