Subaru Outback (BR): Cruise Control System (Diagnostics)

Basic Diagnostic Procedure

A: PROCEDURE

CAUTION:

• When performing diagnosis, observe the legal speed limit on the road.
• The cancel code will be also appear when cruise control is cancelled by the driver's operation. Do not confuse them.
• Be sure to get an assistant to support the diagnosis while driving, and have him/her operate the select monitor.

General Description

A: CAUTION

Airbag system wiring harness is routed near the cruise control command switch.

CAUTION:

• Do not use the electrical test equipment on the airbag system wiring harnesses and connector circuits.
• Be careful not to damage the airbag system wiring harness when servicing the cruise control command switch. Airbag system wiring harness is routed near the cruise control command switch.

B: PREPARATION TOOL

1. SPECIAL TOOL

2. GENERAL TOOL

C: INSPECTION

Measure the battery voltage and specific gravity of electrolyte.

Standard voltage:
12 V or more

Specific gravity:
1.260 or more

Electrical Component Location

A: LOCATION

1. Engine control module (ECM)
2. Cruise control command switch
3. Stop light and brake switch
4. Cruise indicator light and cruise set indicator light
5. Transmission control module (TCM) (AT and CVT model)
6. Inhibitor switch (CVT model)
7. Neutral position switch (MT model)
8. Clutch switch (MT model)

Engine Control Module (ECM) I/O Signal

A: ELECTRICAL SPECIFICATION

For details on the input/output signals for the engine control module, refer to ENGINE (DIAGNOSTICS).

<Ref. to EN(H4SO)(diag)-17, ELECTRICAL SPECIFICATION, Engine Control Module (ECM) I/O Signal.>

<Ref. to EN(H4DOTC)(diag)-18, ELECTRICAL SPECIFICATION, Engine Control Module (ECM) I/O Signal.>

<Ref. to EN(H6DO)(diag)-18, ELECTRICAL SPECIFICATION, Engine Control Module (ECM) I/O Signal.>

B: WIRING DIAGRAM

<Ref. to WI-105, WIRING DIAGRAM, Cruise Control System.>

Subaru Select Monitor

A: OPERATION

1. GENERAL DESCRIPTION

The on-board diagnosis function of the cruise control system uses Subaru Select Monitor.

The on-board diagnosis function operates in two categories, which are used depending on the type of problems; 1) Cruise Control Cancel Conditions Diagnosis:

1. This category of diagnosis requires actual vehicle driving in order to determine the cause, as when cruise speed is cancelled during driving although cruise cancel condition is not entered.
2. Cruise control memory in ECM stores the cancel code which occurred during driving. When there are multiple cancel code, they are shown on the Subaru Select Monitor.

CAUTION:

• The cruise control memory stores not only the cruise "cancel" which occurred (although "cancel" operation is not entered by the driver), but also the "cancel" condition input by the driver.
• The content of the latest memory (the latest code) is cleared when the ignition switch is turned to OFF. However, memory contents set by the diagnosis of faulty switches related to the system and cruise control will remain as trouble history (memory code) after the ignition switch is turned to OFF.

2) Real-time Diagnosis: Real-time diagnosis function is used to determine whether or not the input signal system is in good order, according to signal emitted from switches, sensors, etc.

1. Vehicle cannot be driven at cruise speed when the problem occurs in the cruise control system or relevant circuits.
2. Monitor the signal conditions from switches and sensors.

2. BASIC OPERATION

For the operation procedure, refer to the "PC application help for Subaru Select Monitor".

Read Cancel Code

A: OPERATION

1) On "Main Menu" display, select {Each System Check}.

On "System Selection Menu" display, select {Engine Control System} and select the [OK]. Select [OK] after the engine type information is displayed.

2) Drive vehicle at 40 km/h (25 MPH) or more and set the cruise control.

CAUTION:

• When performing diagnosis, observe the legal speed limit on the road.
• The cancel code will also appear when cruise control is cancelled by the driver's operation. Do not confuse them.
• Be sure to get an assistant to support the diagnosis while driving, and have him/her operate the select monitor.

3) When the set speed is cancelled by itself (without any cancel operations such as applying brake) or when the cruise control could not be set by performing the setting operation, selecting the {Cancel Code(s) Display} on the engine malfunction diagnosis screen will display the cancel code on the select monitor display.

NOTE: The {Latest Diagnostic Code(s)} and {Memorized Diagnostic Code(s)} are contained in the cancel code. The latest code recognized during current test drive is displayed in {Latest Diagnostic Code(s)}. Cancel codes resulting from fault diagnosis of switches relating to the system and cruise control are also displayed in {Memorized Diagnostic Code(s)}.

4) Perform engine DTC clear memory operation. <Ref. to EN(H4SO)(diag)-51, OPERATION, Clear Memory Mode.> <Ref. to EN(H4DOTC)(diag)-53, OPERATION, Clear Memory Mode.> <Ref. to EN(H6DO)(diag)-57, OPERATION, Clear Memory Mode.>

Cancel code of switches relating to the system and cruise control are deleted by clearing memory on the engine side.

NOTE:

• The latest code will be cleared by turning ignition switch to OFF.
• For detailed operation procedures, refer to "PC application help for Subaru Select Monitor".
• For details on cancel codes, refer to List of Cancel Code. <Ref. to CC(diag)-13, List of Cancel Code.>

Real-time Diagnosis

A: OPERATION

1) Select {Current Data Display & Save} in "Engine Diagnosis" display screen.

2) Make sure that normal display is shown when operated as follows:

• Depress and release the brake pedal. (Stop light switch and brake switch are turned ON.)
• Turn the "CRUISE" switch to ON.
• Turn the "CANCEL" switch to ON.
• Turn the "SET/-" switch to ON.
• Turn the "RES/+" switch to ON.
• Depress or release the clutch switch.
• Place the shift lever in any position other than neutral.

NOTE: For detailed operation procedures, refer to "PC application help for Subaru Select Monitor".

Diagnostics with Phenomenon

A: DIAGNOSTIC PROCEDURE WITH PHENOMENON

B: CHECK CRUISE INDICATOR LIGHT AND CRUISE SET INDICATOR LIGHT

TROUBLE SYMPTOM:

Cruise control can be set, but the CRUISE indicator and SET indicator do not illuminate.

List of Cancel Code

A: LIST

NOTE:

• The cancel code is registered even when cancel is performed intentionally by the driver.
• Cancel codes are cleared if the ignition switch is turned to OFF.
• If a different cancel code is input after a cancel code (latest code) has been input, the latest code is overwritten.
• If the cruise indicator light is flashing, a malfunction is occurring in the system or cruise control related switch. The cancel code at this time is saved even after ignition switch is OFF as a memory code of a past malfunction.
• To display a cancel code, use the Subaru Select Monitor to read the code after the cruise control is deactivated during a driving test.

Diagnostic Procedure with Cancel Code

A: 11

When CRUISE switch is pressed, or a malfunction related to CRUISE switch occurs, this is detected.

TROUBLE SYMPTOM:

• Cruise control cannot be set. (Cancelled immediately.)
• Cruise control cannot be released.

WIRING DIAGRAM:

B: 12

Detected when brake pedal is depressed or malfunction related to stop light & brake switch occurs.

TROUBLE SYMPTOM:

• Cruise control cannot be set.
• Cruise control cannot be released.

WIRING DIAGRAM:

C: 13

Detected when clutch pedal is depressed or malfunction related to clutch switch occurs.

TROUBLE SYMPTOM:

• Cruise control cannot be set.
• Cruise control cannot be released.

WIRING DIAGRAM:

D: 14

Detected when select lever is set in the neutral position, or when malfunction related to neutral position switch occurs.

TROUBLE SYMPTOM:

Cruise control cannot be set.

WIRING DIAGRAM:

E: 15

Detected when CANCEL switch is pressed or malfunction related to CRUISE 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)-15, 11, Diagnostic Procedure with Cancel Code.>

F: 16

Detected when ignition switch is turned to OFF or malfunction related 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)-15, 11, Diagnostic Procedure with Cancel Code.>

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.)

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)-15, 11, Diagnostic Procedure with Cancel Code.>

J: 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 detected, it is normal.

K: 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)-23, 22, Diagnostic Procedure with Cancel Code.>

L: 34

The vehicle has been driven at a speed higher than set speed for a long time (approximately 10 minutes) during 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.

M: 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.

N: 41

VDC/TCS/EPB is operated.

Vehicle dynamics control (VDC) or TCS/EPB is operated during cruise driving or cruise setting.

<Ref. to VDC(diag)-2, PROCEDURE, Basic Diagnostic Procedure.>

O: 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.>

P: 44

Body integrated unit malfunction is detected.

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

<Ref. to LAN(diag)-2, PROCEDURE, Basic Diagnostic Procedure.>

Q: 45

Malfunction of the combination meter is detected.

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

<Ref. to LAN(diag)-2, PROCEDURE, Basic Diagnostic Procedure.>

R: 49

Automatic transmission malfunction is detected.

Automatic transmission malfunction is detected during cruise driving or cruise setting. <Ref. to 5AT(diag)-2, PROCEDURE, Basic Diagnostic Procedure.> <Ref. to CVT(diag)-2, PROCEDURE, Basic Diagnostic Procedure.>

S: 61

Malfunction in the stop light & brake switch is detected.

TROUBLE SYMPTOM:

• Cruise control cannot be set.
• Cruise control cannot be released.

  Refer to DTC 12 for diagnostic procedure.

  <Ref. to CC(diag)-17, 12, Diagnostic Procedure with Cancel Code.>

T: 62

Neutral position switch malfunction is detected.

TROUBLE SYMPTOM:

Cruise control cannot be set.

Refer to DTC 14 for diagnostic procedure.

<Ref. to CC(diag)-20, 14, Diagnostic Procedure with Cancel Code.>

U: 63

Malfunction of vehicle speed signal variation is detected.

TROUBLE SYMPTOM:

Cruise control cannot be set. (Cancelled immediately.) Refer to DTC 22 for diagnostic procedure.

<Ref. to CC(diag)-23, 22, Diagnostic Procedure with Cancel Code.>

V: 64

Malfunction related to engine 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.>

W: 65

Cruise control command switch malfunction is detected.

While the command switch is pressed ON for a long time (approximately two minutes), stuck ON condition 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)-15, 11, Diagnostic Procedure with Cancel Code.>

X: 66

Cruise control processing malfunction 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.>

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