Subaru LEGACY 2003 Service Manual page 6

VDC (DIAGNOSTICS)
2. WITH SUBARU SELECT MONITOR
1 CHECK PRE-INSPECTION.
1) Ask the customer when and how the trou-
ble occurred using interview checklist.
<Ref. to VDC-6, Check List for Interview.>
2) Before performing diagnosis, inspect unit
which might influence the VDC problem.
<Ref. to VDC-9, INSPECTION, General
Description.>
Is unit that might influence the VDC prob-
lem normal?
2 CHECK INDICATION OF TROUBLE CODE
DISPLAY.
1) Turn ignition switch to OFF.
2) Connect the SUBARU SELECT MONITOR
to data link connector.
3) Turn ignition switch to ON and SUBARU
SELECT MONITOR to ON.
4) Calling up the diagnostic trouble code
(DTC). <Ref. to VDC-23, WITH SUBARU
SELECT MONITOR, OPERATION, Read
Diagnostic Trouble Code (DTC).>
5) Record all diagnostic trouble codes (DTCs)
and frame data.
Is diagnostic trouble code (DTC) is dis-
played?
3 CHECK WARNING LIGHT.
Check lighting pattern of the warning light.
<Ref. to VDC-26, INSPECTION, Warning Light
Illumination Pattern.>
Is the warning light lighting pattern normal?
4 PERFORM THE GENERAL DIAGNOSTICS.
1) Inspect using "General Diagnostics Table".
<Ref. to VDC-275, INSPECTION, General
Diagnostic Table.>
2) Perform the clear memory mode. <Ref. to
VDC-25, WITH SUBARU SELECT MONI-
TOR, OPERATION, Clear Memory Mode.>
3) Perform the inspection mode. <Ref. to
VDC-24, OPERATION, Inspection Mode.>
4) Calling up the diagnostic trouble code
(DTC). <Ref. to VDC-23, WITH SUBARU
SELECT MONITOR, OPERATION, Read
Diagnostic Trouble Code (DTC).>
Is no diagnostic trouble code (DTC) dis-
played or do VDC and ABS warning lights
constantly remain on?
BASIC DIAGNOSTIC PROCEDURE
Step Value
Normal
DTC is indicated.
Normal
DTC is indicated.
VDC-4
Yes
Go to step 2. Repair or replace
each unit.
Go to step 3. Go to step 5.
Go to step 4. Check warning
light. <Ref. to
VDC-33, ABS
WARNING LIGHT,
VDC WARNING
LIGHT, VDC
OPERATING
INDICATOR
LIGHT OR VDC
OFF INDICATOR
LIGHT DOES
NOT COME ON.,
Diagnostics Chart
with Diagnosis
Connector.>
Complete the Go to step 5.
diagnosis.
No