Subaru Legacy IV (2008 year). Service manual - part 1160

CC(diag)-22

Diagnostic Procedure with Cancel Code

CRUISE CONTROL SYSTEM (DIAGNOSTICS)

E: 15

This DTC is detected when the cancel switch is pressed or problem relating to the main switch occurs.
TROUBLE SYMPTOM:
• Cruise control cannot be set. (Cancelled immediately.)
• Cruise control cannot be released.
Refer to DTC 11 for diagnostic procedure.
<Ref. to CC(diag)-13, 11, Diagnostic Procedure with Cancel Code.>

CC(diag)-23

Diagnostic Procedure with Cancel Code

CRUISE CONTROL SYSTEM (DIAGNOSTICS)

F: 16

This DTC is detected when the ignition switch is turned OFF or problem relating to the ignition switch occurs.
TROUBLE SYMPTOM:
Cruise control cannot be set.
WIRING DIAGRAM:

G: 21

Cruise control command switch malfunction is detected.
TROUBLE SYMPTOM:
• Cruise control cannot be set. (Cancelled immediately.)
• Cruise control cannot be released.
Refer to DTC 11 for diagnostic procedure.
<Ref. to CC(diag)-13, 11, Diagnostic Procedure with Cancel Code.>

Step

Check

Yes

No

1

CHECK IGNITION SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the ECM harness connector.
3) Turn the ignition switch to ON.
4) Measure the voltage between harness con-
nector terminal and chassis ground.

Connector & terminal

(B135) No. 19 (+) — Chassis ground (–):

Is the voltage 10 V or more?

Check for poor 
contact of ECM 
connector.

• Check fuse No. 
12 (in fuse & relay 
box).
• Check the har-
ness for open or 
short circuit 
between ignition 
switch and ECM.

CC-00485

B135

MAIN SBF

F/B  No.12

SBF-6

BATTERY

IGNITION
SWITCH

ECM

19

B135

10

29

28

32

22

21

20

23

30 31

11

13

12

15

24

33

17

1

2

3

4

5

6

7

14

16

25

9

8

34

27

26

19

18

35

CC(diag)-24

Diagnostic Procedure with Cancel Code

CRUISE CONTROL SYSTEM (DIAGNOSTICS)

H: 22

Malfunction related to vehicle speed sensor is detected.
DIAGNOSIS:
Open or shorted circuit in vehicle speed sensor system.
TROUBLE SYMPTOM:
Cruise control cannot be set. (Cancelled immediately.)

Step

Check

Yes

No

1

CHECK ABS OR VDC WARNING LIGHT.
1) Turn the ignition switch to ON.
2) After the initial operation of combination 
meter is completed, check if the ABS or VDC 
warning light continues to illuminate.

Does the warning light continue 
to illuminate?

Check ABSCM or 
VDCCM.
<Ref. to 
ABS(diag)-2, Basic 
Diagnostic Proce-
dure.>
<Ref. to 
VDC(diag)-2, 
Basic Diagnostic 
Procedure.>

Go to step 2.

2

CHECK DTC FOR LAN COMMUNICATION.
Using the Subaru Select Monitor to read the 
DTC of body integrated unit.

Is a DTC of low-speed CAN dis-
played?

Check the LAN 
communication cir-
cuit. <Ref. to 
LAN(diag)-2, Basic 
Diagnostic Proce-
dure.>

Replace the ECM.
<Ref. to 
FU(H4SO)-39,
Engine Control 
Module (ECM).>
<Ref. to 
FU(H4DOTC)-52, 
Engine Control 
Module (ECM).>
<Ref. to 
FU(H6DO)-38, 
Engine Control 
Module (ECM).>

CC(diag)-25

Diagnostic Procedure with Cancel Code

CRUISE CONTROL SYSTEM (DIAGNOSTICS)

I:

24

Malfunction in cruise control-related switch is detected.
TROUBLE SYMPTOM:
• Cruise control cannot be set. (Cancelled immediately.)
• Cruise control cannot be released.
Refer to DTC 11 for diagnostic procedure.
<Ref. to CC(diag)-13, 11, Diagnostic Procedure with Cancel Code.>

J: 25

Malfunction of brake input circuit in ECM is detected.
Refer to the Engine Diagnostic Procedure for diagnostic procedure.
<Ref. to EN(H4SO)(diag)-2, PROCEDURE, Basic Diagnostic Procedure.>
<Ref. to EN(H4DOTC)(diag)-2, PROCEDURE, Basic Diagnostic Procedure.>
<Ref. to EN(H6DO)(diag)-2, PROCEDURE, Basic Diagnostic Procedure.>

K: 31

Engine speed signal malfunction is detected.
Abnormal increase of engine speed is detected.
Gear is placed in 1st or Reverse position.
After driving at the 2nd gear position or higher, perform the cruise setting again. If a cancel code is not de-
tected, it is normal.

L: 32

This DTC is detected out of vehicle speed range.
Increase vehicle speed high enough to allow the cruise control to function, and then perform setting operation
again.
If cancel code is still detected after setting cruise again, perform the diagnosis for DTC 22.
Refer to DTC 22 for diagnostic procedure.
<Ref. to CC(diag)-24, 22, Diagnostic Procedure with Cancel Code.>

M: 34

The vehicle has been driven at a speed higher than set speed for a long time (approximately 10 minutes) dur-
ing cruise driving.
This cancel code is detected when driving for a long period of time at a speed higher than appropriate for
cruise control setting by operating the accelerator pedal.
Perform the cruise control setting operation again. If the cancel code is not detected, it is normal.

N: 35

Detected when it is impossible to perform the vehicle speed feedback.
Set vehicle speed cannot be kept for some reasons (steep uphill, unreleased parking brake, etc.) during
cruise driving.
Cancel code is detected when driving conditions are not suitable for cruise control.
Perform cruise set operation again after clearing the possible cause.

O: 41

VDC/TCS has operated.
Vehicle dynamics control (VDC) or TCS is operated during cruise driving or cruise setting.
<Ref. to VDC(diag)-2, PROCEDURE, Basic Diagnostic Procedure.>

P: 43

Malfunction of ABS/VDC is detected.
VDC malfunction is detected during cruise driving or cruise setting.
<Ref. to VDC(diag)-2, PROCEDURE, Basic Diagnostic Procedure.>