When performing the entire diagnosis or cruise
control diagnosis, first start the engine and wait until initial
illumination of the ABS/VDC warning light completes. (If you start the
diagnostics before performing the above procedures, the cancel code “43”
is recorded and CRUISE indicator does not illuminate even though the
CRUISE switch is pressed.)
When performing diagnosis, observe the legal speed limit on the road.
The cancel code will also appear when the 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.
CRUISE CONTROL (DIAGNOSTICS) > General Description
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.
In the cruise control memory, not only the
cruise control “cancel” occurred (although the “cancel” operation is not
entered by the driver), but also the “cancel” condition input by the
driver is stored.
The latest memory content (latest code) is
cleared when 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.
CRUISE CONTROL (DIAGNOSTICS) > General Description
INSPECTION
Before performing diagnosis, check the following items which might affect cruise control problems.
CRUISE CONTROL (DIAGNOSTICS) > Diagnostic Procedure for Subaru Select Monitor Communication
INSPECTION
Trouble symptom:
Cannot communicate with [Engine Control System].
Detecting condition:
Defective connector
Power supply circuit malfunction
Defective CAN communication circuit
Defective Subaru Select Monitor
For diagnostic procedure, refer to the diagnosis for the engine.
CRUISE CONTROL (DIAGNOSTICS) > Real-time Diagnosis
OPERATION
1.
On [Start] screen, select [Diagnosis].
2.
On [Select Vehicle] screen, input the target vehicle information and select [OK].
3.
On [Main Menu] screen, select [Each System].
4.
On [Select System] screen, select [Engine], and then select [Next].
5.
On [Select Function] screen, select [Data Monitor].
6.
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.
Place the shift lever in any position other than neutral.
For detailed operation procedures, refer to “Help” of application.
CRUISE CONTROL (DIAGNOSTICS) > Cancel Code
OPERATION
1.
On [Start] screen, select [Diagnosis].
2.
On [Select Vehicle] screen, input the target vehicle information and select [OK].
3.
On [Main Menu] screen, select [Each System].
4.
On [Select System] screen, select [Engine], and then select [Next].
5.
Drive vehicle at 40 km/h (25 MPH) or more and set the cruise control.
When performing the entire diagnosis or cruise
control diagnosis, first start the engine and wait until initial
illumination of the ABS/VDC warning light completes. (If you start the
diagnostics before performing the above procedures, the cancel code “43”
is recorded and CRUISE indicator does not illuminate even though the
CRUISE switch is pressed.)
When performing diagnosis, observe the legal speed limit on the road.
The cancel code will also appear when the 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.
6.
When the set speed is canceled 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] on the engine malfunction diagnosis screen will display the cancel code on the select monitor display.
The [Current] and [The past] are contained in the cancel code. The latest code recognized during current test drive is displayed in [Current]. Cancel codes resulting from fault diagnosis of switches relating to the system and cruise control are also displayed in [The past].
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.
CRUISE CONTROL (DIAGNOSTICS) > Diagnostic Procedure with Cancel Code
34
The vehicle was driven at higher speed than the
set vehicle speed for a long time (approximately 10 minutes) during
cruise driving.
The cancel code is detected when the vehicle was
driven for a long time at the higher speed than the speed available for
cruise set through the accelerator operation.
Perform the cruise setting again. It is normal if the cancel code is not detected.
CRUISE CONTROL (DIAGNOSTICS) > Diagnostic Procedure with Cancel Code
35
Detected when the vehicle speed feedback is not possible.
Set vehicle speed cannot be maintained because
of some reasons (steep uphill, parking brake forgotten to be returned to
the home position, etc.) during cruise driving.
The cancel code is detected when the driving condition is not suitable for cruise control.
Eliminate the probable cause, and perform the cruise set operation again.
CRUISE CONTROL (DIAGNOSTICS) > Diagnostic Procedure with Cancel Code
CRUISE indicator does not illuminate even though you pressed the CRUISE switch before starting the engine.
Detected when the CRUISE switch is pressed
during the initial diagnosis of ABS/VDC. It is normal if the CRUISE
indicator illuminates when you press the CRUISE switch again after
starting the engine and confirming that the initial illumination of the
ABS/VDC warning light has been ended.
CRUISE CONTROL (DIAGNOSTICS) > Diagnostic Procedure with Cancel Code
44
Body integrated unit malfunction is detected.
Body integrated unit malfunction is detected during cruise driving or cruise setting operation.
This cancel code may be detected when the
vehicle suddenly started with VDC OFF on low µ road surface. In this
case, restart the engine and perform the cruise control setting
operation again. If the cancel code is not detected, it is normal.
CRUISE CONTROL (DIAGNOSTICS) > Diagnostic Procedure with Cancel Code
64
Malfunction related to engine is detected.
Abnormal decrease in engine speed is detected during cruise driving.
If the malfunction indicator is not remaining
on/blinking, this cancel code may be detected due to malfunction of the
ECM. In this case, restart the engine and perform the cruise control
setting operation again. If the cancel code is not detected, it is
normal. (Temporary malfunction)
CRUISE CONTROL (DIAGNOSTICS) > Diagnostic Procedure with Cancel Code
65
Cruise control command switch malfunction is detected.
When 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.)
If the malfunction indicator is not remaining
on/blinking, this cancel code may be detected due to malfunction of the
ECM. In this case, restart the engine and perform the cruise control
setting operation again. If the cancel code is not detected, it is
normal. (Temporary malfunction)
CRUISE CONTROL (DIAGNOSTICS) > Diagnostics with Phenomenon
DIAGNOSTIC PROCEDURE WITH PHENOMENON
Phenomenon
Check Item
Note
1
CRUISE switch is not turned ON. (CRUISE
indicator does not illuminate.) Or cruise control was canceled without
operating the CRUISE switch.
CRUISE CONTROL (DIAGNOSTICS)>General Description>CAUTION