Subaru Legacy III (2000-2003 year). Manual - part 696

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 harness for broken wires or short circuits, shake it while holding it or the connector.
• When ABS warning light illuminates, read and record diagnostic trouble code (DTC) indicated by ABS
warning light.

Step

Value

Yes

No

1

CHECK PRE-INSPECTION.
1) Ask the customer when and how the trou-

ble occurred using interview checklist. 
<Ref. to ABS-5, Check List for Interview.>

2) Before performing diagnosis, inspect unit 

which might influence the ABS problem. 
<Ref. to ABS-8, INSPECTION, General 
Description.>
Is the component part  that might influence 
the ABS problem normal?

Component part is normal.

Go to step 2.

Repair or replace 
each unit.

2

CHECK INDICATION OF DIAGNOSTIC 
TROUBLE CODE (DTC).
Calling up diagnostic trouble code (DTC). 
<Ref. to ABS-19, Read Diagnostic Trouble 
Code (DTC).>  
Is ABS warning light normal?

ABS warning light is normal.

Go to step 3.

Inspect using diag-
nostic chart for 
ABS warning light 
failure.<Ref. to 
ABS-28, Diagnos-
tics Chart with 
Diagnosis Con-
nector.>

NOTE:
Call up diagnostic
trouble code (DTC)
again after inspect-
ing ABS warning
light. <Ref. to ABS-
19, Read Diagnos-
tic Trouble Code
(DTC).>  

3

CHECK DIAGNOSTIC TROUBLE CODE 
(DTC). 

NOTE:

Record all diagnostic trouble codes (DTC). 

Is only the start code displayed?

Only the start code displayed.

Go to step 4.

Go to step 5.

ABS-3

ABS (DIAGNOSTICS)

BASIC DIAGNOSTIC PROCEDURE

2. WITH SUBARU SELECT MONITOR

CAUTION:
Remove foreign matter (dust, water, etc.) from the ABSCM&H/U connector during removal and instal-
lation.

NOTE:
• To check harness for broken wires or short circuits, shake it while holding it or the connector.
• Check list for interview. <Ref. to ABS-25, WITH SUBARU SELECT MONITOR, LIST, List of Diagnostics
Trouble Code (DTC).>

4

PERFORM THE GENERAL DIAGNOSTICS. 
1) Inspect using “General Diagnostics Table”. 

<Ref. to ABS-149, General Diagnostics 
Table.>

2) Perform the clear memory mode. <Ref. to 

ABS-22, WITHOUT SUBARU SELECT 
MONITOR, OPERATION, Clear Memory 
Mode.>

3) Perform the inspection mode. <Ref. to 

ABS-21, Inspection Mode.>  
Calling up the diagnostic trouble code 
(DTC). <Ref. to ABS-19, Read Diagnostic 
Trouble Code (DTC).>
Is only the start code displayed?

 Only the start code displayed. Complete the 

diagnosis. 

Go to step 5.

5

PERFORM THE DIAGNOSIS.
1) Inspect using “Diagnostics Chart with Diag-

nostic Connector”.<Ref. to ABS-28, Diag-
nostics Chart with Diagnosis Connector.>

NOTE:

For diagnostic trouble code (DTC) list, refer to
“List of Diagnostics Trouble Code (DTC)”. <Ref.
to ABS-24, WITHOUT SUBARU SELECT
MONITOR, LIST, List of Diagnostics Trouble
Code (DTC).>  

2) Repair trouble cause.
3) Perform the clear memory mode. <Ref. to 

ABS-22, WITHOUT SUBARU SELECT 
MONITOR, OPERATION, Clear Memory 
Mode.>

4) Perform the inspection mode. <Ref. to 

ABS-21, Inspection Mode.>

5) Calling up the diagnostic trouble code 

(DTC). <Ref. to ABS-19, Read Diagnostic 
Trouble Code (DTC).>
Is only the start code displayed?

Only the start code displayed.

Complete the 
diagnosis. 

Inspect using 
“Diagnostics Chart 
with Diagnostic 
Connector”. <Ref. 
to ABS-28, Diag-
nostics Chart with 
Diagnosis Con-
nector.>   

Step

Value

Yes

No

1

CHECK PRE-INSPECTION. 
1) Ask the customer when and how the trou-

ble occurred using interview checklist. 
<Ref. to ABS-5, Check List for Interview.>  

2) Before performing diagnosis, inspect unit 

which might influence the ABS problem. 
<Ref. to ABS-8, INSPECTION, General 
Description.>
Is unit that might influence the ABS prob-
lem normal? 

Component part is normal.

Go to step 2.

Repair or replace 
each unit. 

Step

Value

Yes

No

ABS-4

ABS (DIAGNOSTICS)

BASIC DIAGNOSTIC PROCEDURE

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.

NOTE:

If the communication function of the select
monitor cannot be executed normally, check
the communication circuit. <Ref. to ABS-80,
COMMUNICATION FOR INITIALIZING IM-
POSSIBLE, Diagnostics Chart with Subaru Se-
lect Monitor.>

4) Read diagnostic trouble code (DTC). <Ref. 

to ABS-17, READ CURRENT DATA, 
OPERATION, Subaru Select Monitor.>

5) Record all diagnostic trouble codes (DTC) 

and frame data.
Is the DTC displayed?

DTC not indicated.

Go to step 3.

Go to step 4.

3

PERFORM THE GENERAL DIAGNOSTICS. 
1) Inspect using “General Diagnostics Table”. 

<Ref. to ABS-149, General Diagnostics 
Table.>

2) Perform the clear memory mode. <Ref. to 

ABS-17, CLEAR MEMORY MODE, OPER-
ATION, Subaru Select Monitor.>

3) Perform the inspection mode. <Ref. to 

ABS-21, Inspection Mode.>

4) Calling up the diagnostic trouble code 

(DTC). <Ref. to ABS-16, READ DIAGNOS-
TIC TROUBLE CODE (DTC), OPERA-
TION, Subaru Select Monitor.>
Confirm that no DTC is displayed.
Does ABS warning light remain off?

ABS warning light remains off. Complete the 

diagnosis. 

Go to step 4.

4

PERFORM THE DIAGNOSIS.
1) Inspect using “Diagnostics Chart with Sub-

aru Select Monitor”.<Ref. to ABS-80, Diag-
nostics Chart with Subaru Select Monitor.>

NOTE:

For diagnostic trouble code (DTC) list, refer to
“List of Diagnostics Trouble Code (DTC)”. <Ref.
to ABS-24, WITHOUT SUBARU SELECT
MONITOR, LIST, List of Diagnostics Trouble
Code (DTC).>  

2) Repair trouble cause.
3) Perform the clear memory mode. <Ref. to 

ABS-17, CLEAR MEMORY MODE, OPER-
ATION, Subaru Select Monitor.>

4) Perform the inspection mode. <Ref. to 

ABS-21, Inspection Mode.>

5) Calling up the diagnostic trouble code 

(DTC). <Ref. to ABS-16, READ DIAGNOS-
TIC TROUBLE CODE (DTC), OPERA-
TION, Subaru Select Monitor.>
Confirm that no DTC is displayed.
Does ABS warning light remain off?

ABS warning light remains off. Complete the 

diagnosis. 

Inspect using 
“Diagnostics Chart 
with Subaru Select 
Monitor”. <Ref. to 
ABS-<Ref. to 
ABS-80, Diagnos-
tics Chart with 
Subaru Select 
Monitor.>, Diag-
nostics Chart with 
Subaru Select 
Monitor.>

Step

Value

Yes

No

ABS-5

ABS (DIAGNOSTICS)

CHECK LIST FOR INTERVIEW

2. Check List for Interview

A: CHECK

Check the following items about the vehicle's state.
1. STATE OF ABS WARNING LIGHT

ABS warning light 
comes on.

❏

 Always

❏

 Sometimes

❏

 Only once

❏

 Does not come on

• When / how long does it come on?:

Ignition key position

❏

 LOCK

❏

 ACC

❏

 ON (before starting engine)

❏

 START

❏

 On after starting (Engine is running)

❏

 On after starting (Engine is stop)

Timing

❏

 Immediately after ignition is ON.

❏

 Immediately after ignition starts.

❏

 When advancing

km/h to

 km/h

MPH to

 MPH

❏

 While traveling at a constant speed

km/h

MPH

❏

 When decelerating

km/h to

 km/h

MPH to

 MPH

❏

When turning to right

Steering angle :

deg

Steering time :

sec

❏

 When turning to left

Steering angle :

deg

Steering time :

sec

❏

 When moving other electrical parts

• Parts name :
• Operating condition :