Subaru Legacy (2005 year). Manual - part 1019

CC(diag)-13

CRUISE CONTROL SYSTEM (DIAGNOSTICS)

List of Diagnostic Trouble Code (DTC)

21

Cruise Control Switch Mal-
function When Ignition 
Switch Is Turned To ON

When the ignition switch is turned to ON, each switch of 
cruise control command switch is already turned to ON.

This DTC is indicated 
without operating the main 
switch. <Ref. to CC(diag)-
15, DTC 11, 15, 21 AND 
24 CRUISE CONTROL 
COMMAND SWITCH, 
Diagnostic Procedure with 
Diagnostic Trouble Code 
(DTC).>

22

Vehicle Speed Variation 
Malfunction

Malfunction of vehicle speed signal variation is detected.

<Ref. to CC(diag)-32, 
DTC 22 AND 32 VEHICLE 
SPEED SENSOR, Diag-
nostic Procedure with 
Diagnostic Trouble Code 
(DTC).>

23

Engine Related Sensor 
Malfunction

Malfunction related to engine is detected.

<Ref. to EN(H4SO 
2.0)(diag)-2, Basic Diag-
nostic Procedure.> <Ref. 
to EN(H4SO 2.5)(diag)-2, 
Basic Diagnostic Proce-
dure.> <Ref. to 
EN(H4DOTC)(diag)-2, 
Basic Diagnostic Proce-
dure.> <Ref. to 
EN(H6DO)(diag)-2, Basic 
Diagnostic Procedure.>

24

Cruise Control Related 
Switch Malfunction

Command switch malfunction is detected. (When the 
switch is being pressed ON for an abnormal period of 
time (about two minutes), open circuit is detected.)

This DTC is indicated with 
normal operation. <Ref. to 
CC(diag)-15, DTC 11, 15, 
21 AND 24 CRUISE CON-
TROL COMMAND 
SWITCH, Diagnostic Pro-
cedure with Diagnostic 
Trouble Code (DTC).>

25

Brake Switch Input Circuit 
Malfunction

Malfunction of brake switch input circuit in ECM is 
detected.

<Ref. to CC(diag)-18, 
DTC 12 AND 25 STOP 
LIGHT SWITCH AND 
BRAKE SWITCH, Diag-
nostic Procedure with 
Diagnostic Trouble Code 
(DTC).>

26

Engine speed signal

• Abnormal increase of engine speed is detected.
• Gear is placed in Neutral, 1st or Reverse positions.

Cruise in more than 2nd 
shift position.

32

Out of Vehicle Speed of 
Cruise Control Operation

• Controlled vehicle speed decreased under the limit 
during cruising.
• Set operation was performed out of vehicle speed 
available for setting.
• Resume operation was performed without memorized 
vehicle speed.

This DTC is displayed 
though the vehicle speed 
is increased to the speed 
available for cruise set and 
set operation was per-
formed again. <Ref. to 
CC(diag)-32, DTC 22 
AND 32 VEHICLE SPEED 
SENSOR, Diagnostic Pro-
cedure with Diagnostic 
Trouble Code (DTC).>

DTC

Item

Contents of diagnosis

Reference

CC(diag)-14

CRUISE CONTROL SYSTEM (DIAGNOSTICS)

List of Diagnostic Trouble Code (DTC)

33

WAIT is prohibited after 
operating accelerator 
pedal.

Controlled vehicle speed increased above the limit dur-
ing cruising.

This DTC is displayed 
when driving at higher 
speed than appropriate 
cruise control speed. In 
this case, lower the vehi-
cle speed to the speed 
available for cruise set, 
and perform cruise set 
operation again.

34

Prohibited when accelera-
tor pedal position large is 
continued.

The vehicle has been driven at higher speed than set 
vehicle speed for an abnormal period of time (about 10 
minutes) during cruise driving.

This DTC is displayed 
when driving for a long 
period of time at higher 
speed than appropriate 
cruise set vehicle speed 
by operating accelerator 
pedal. In this case, 
release the cruise set.

35

Prohibited when vehicle 
speed feedback unavail-
able.

Set vehicle speed cannot keep because of some rea-
sons (steep uphill, parking brake, abnormal decrease of 
engine output, etc.) during cruise driving.

This DTC is displayed 
when driving condition is 
not suitable for cruise con-
trol. Perform cruise set 
operation again after elim-
inating the estimated 
cause.

41

VDC/TCS operation

Vehicle dynamics control (VDC) or TCS is operated dur-
ing cruise driving or cruise setting.

This DTC is displayed 
when driving condition is 
not suitable for cruise con-
trol. Perform cruise set 
operation again after elim-
inating the estimated 
cause.

42

High speed CAN commu-
nication malfunction

High speed CAN communication malfunction is detected 
during cruise driving or cruise setting.

<Ref. to LAN(diag)-2, 
Basic Diagnostic Proce-
dure.>

43

ABS/VDC malfunction

ABS or vehicle dynamics control (VDC) system malfunc-
tion is detected during cruise driving or cruise setting.

<Ref. to ABS(diag)-2, 
Basic Diagnostic Proce-
dure.> or <Ref. to 
VDC(diag)-2, Basic Diag-
nostic Procedure.>

44

Body integrated module 
malfunction

Body integrated module system malfunction is detected 
during cruise driving or cruise setting.

<Ref. to LAN(diag)-2, 
Basic Diagnostic Proce-
dure.>

45

Meter malfunction

Combination meter malfunction is detected during cruise 
driving or cruise setting.

<Ref. to LAN(diag)-2, 
Basic Diagnostic Proce-
dure.>

DTC

Item

Contents of diagnosis

Reference

CC(diag)-15

CRUISE CONTROL SYSTEM (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

8. Diagnostic Procedure with Diagnostic Trouble Code (DTC)

A: DTC 11, 15, 21 AND 24 CRUISE CONTROL COMMAND SWITCH

TROUBLE SYMPTOM:
• Cruise control cannot be set. (Cancelled immediately.)
• Cruise control cannot be released.
WIRING DIAGRAM:
• 2.0 L turbo model, 3.0 L model, 2.5 L EC, K4 and EK model

CC-00265

B136

9

30

29

28

32

31

20

19

18

22

21

10

12

11

14

24

34

33

27

26

16

1

2

3

4

5

6

13

23

15

25

8

7

17

35

ST3

CRUISE CONTROL
COMMAND SWITCH

SET/

COAST

SWITCH

RESUME/

ACCEL

SWITCH

CANCEL

SWITCH

B136

C:

ECM

C11

2

B68

STEERING
ROLL CONNECTOR

3

1

MAIN

SWITCH

5

4

1

C7

E

*

B21

E2

*

36

1 2 3

1

2 3

4 5 6 7 8

1 2 3 4
5 6 7 8

B21

1 2 3 4

12 13 14 15

5 6 7 8

16 17 18 19

9 10 11

20 21 22

23 24 25 26 27 28 29 30 31 32 33

35

34

37

36

39

38

41

40

43

42

44

45

47

46

49

48

51

50

53

52

54

ST3

B68

B138

C:

*

  TERMINAL No. RANDOM 
  ARRANGEMENT

:

LHD

RHD

:

:

LHD MODEL

RHD MODEL

LHD

RHD

:

:

B122

B138

B122

CC(diag)-16

CRUISE CONTROL SYSTEM (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

• 2.0 L non-turbo model, 2.5 L KS, KA model

CC-00266

B136

9

30

29

28

32

31

20

19

18

22

21

10

12

11

14

24

34

33

27

26

16

1

2

3

4

5

6

13

23

15

25

8

7

17

35

ST3

B136

C:

ECM

C21

2

B68

3

1

5

4

1

D14

E

B21

E2

36

1

2 3

4 5 6 7 8

1 2 3 4
5 6 7 8

B21

1 2 3 4

12 13 14 15

5 6 7 8

16 17 18 19

9 10 11

20 21 22

23 24 25 26 27 28 29 30 31 32 33

35

34

37

36

39

38

41

40

43

42

44

45

47

46

49

48

51

50

53

52

54

ST3

B68

1 2 3

B122

C:

CANCEL

SWITCH

SET/

COAST

SWITCH

MAIN

SWITCH

B137

D:

B83

*

*

: LHD MODEL

: RHD MODEL

LHD

RHD

 : 

LHD

B122

 : 

RHD

B83

*

: TERMINAL No. 
  RANDOM 
  ARRANGEMENT  

RESUME/

ACCEL

SWITCH

CRUISE CONTROL
COMMAND SWITCH

STEERING
ROLL CONNECTOR

B137

5

6

7

8

2

1

9

4

3

10

22 23

11 12 13 14 15

24 25

26

16 17

18 19 20 21

27

28 29

30 31

D: