Subaru Legacy III (2000-2003 year). Manual — part 995

CC-12

CRUISE CONTROL SYSTEM

INHIBITOR SWITCH

CRUISE CONTROL SYSTEM (DIAGNOS-
TICS)

CC

Page

1.

Basic Diagnostic Procedure . . . . . . . . . . . . . . . . . . 2

2.

General Description . . . . . . . . . . . . . . . . . . . . . 4

3.

Electrical Components Location. . . . . . . . . . . . . . . . ..7

4.

Cruise Control Module I/O Signal. . . . . . . . . . . . . . . . 8

5.

Subaru Select Monitor. . . . . . . . . . . . . . . . . . . ...10

6.

Diagnostics Chart with Symptom . . . . . . . . . . . . . . . ..12

7.

List of Diagnostic Trouble Code (DTC) . . . . . . . . . . . . . .26

8.

Diagnostics Chart with Trouble Code. . . . . . . . . . . . . . 27

CC-2

CRUISE CONTROL SYSTEM (DIAGNOSTICS)

BASIC DIAGNOSTIC PROCEDURE

1. Basic Diagnostic Procedure

A: PROCEDURE

Step

Value

Yes

No

1

START DIAGNOSIS.
1) Perform pre-inspection. <Ref. to CC-6,

INSPECTION, General Description.>

2) Check cruise control main switch operation.

Is cruise control main switch turned ON?

Cruise main switch is turned
ON.

Go to step 2.

Go to symptom 1.
<Ref. to CC-12,
SYMPTOM
CHART, Diagnos-
tics Chart with
Symptom.>

2

PREPARE SUBARU SELECT MONITOR.
Is the Subaru select monitor available?

Subaru select monitor is avail-
able.

Go to step 3.

Go to step 4.

3

PERFORM CRUISE CANCEL CONDITIONS
DIAGNOSIS.
Perform cruise cancel conditions diagnosis.
<Ref. to CC-10, Subaru Select Monitor.>
Is trouble code indicated?

Trouble code is not indicated.

Go to step 4.

Go to “List of Diag-
nostic Trouble
Code (DTC)”.
<Ref. to CC-26,
List of Diagnostic
Trouble Code
(DTC).>

4

CHECK CRUISE CONTROL SET OPERA-
TION.
Check cruise control set operation.
Can cruise control be set while driving at 40
km/h (25 MPH)?

Cruise control can be set.

Go to step 5.

Go to symptom 2.
<Ref. to CC-12,
SYMPTOM
CHART, Diagnos-
tics Chart with
Symptom.>

5

CHECK VEHICLE SPEED IS HELD WITHIN
SET SPEED.
Make sure vehicle speed is held within set
speed.
Is vehicle speed held within set speed

±

3 km/h

(

±

2 MPH) ?

Vehicle speed is held within
set speed.

Go to step 6.

Go to symptom 3.
<Ref. to CC-12,
SYMPTOM
CHART, Diagnos-
tics Chart with
Symptom.>

6

CHECK RESUME/ACCEL OPERATION.
Check RESUME/ACCEL operation.
Does vehicle speed increase or return to set
speed after RESUME/ACCEL switch has been
pressed?

Vehicle speed increases or
returns to set speed.

Go to step 7.

Go to symptom 4.
<Ref. to CC-12,
SYMPTOM
CHART, Diagnos-
tics Chart with
Symptom.>

7

CHECK SET/COAST OPERATION.
Check SET/COAST operation.
Does vehicle speed decrease after SET/
COAST switch has been pressed?

Vehicle speed decreases.

Go to step 8.

Go to symptom 5.
<Ref. to CC-12,
SYMPTOM
CHART, Diagnos-
tics Chart with
Symptom.>

8

CHECK CANCEL OPERATION.
Check CANCEL operation.
Is cruise control released after CANCEL switch
has been pressed?

Cruise control is released.

Go to step 9.

Go to symptom 6.
<Ref. to CC-12,
SYMPTOM
CHART, Diagnos-
tics Chart with
Symptom.>

9

CHECK CRUISE CONTROL RELEASE OP-
ERATION.
Check cruise control release operation.
Is cruise control released after brake pedal has
been depressed?

Cruise control is released.

Go to step 10.

Go to symptom 7.
<Ref. to CC-12,
SYMPTOM
CHART, Diagnos-
tics Chart with
Symptom.>

CC-3

CRUISE CONTROL SYSTEM (DIAGNOSTICS)

BASIC DIAGNOSTIC PROCEDURE

10

CHECK CRUISE CONTROL RELEASE OP-
ERATION.
Check cruise control release operation.
Is cruise control released after clutch pedal
has been depressed? (MT)

Cruise control is released.

Finish the diag-
nostics.

Go to symptom 8.
<Ref. to CC-12,
SYMPTOM
CHART, Diagnos-
tics Chart with
Symptom.>

Step

Value

Yes

No