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Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 530

VDC(diag)-19

Subaru Select Monitor

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

2. READ CURRENT DATA

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

2) On «System Selection Menu» display, select {Brake Control System}.

3) When {VDC} is displayed, select the [OK] button.

4) On «Brake Control Diagnosis» display, select {Current Data Display & Save}.

5) Using the scroll key, scroll the display screen up or down until necessary data is shown.

• A list of the support data is shown in the following table.

NOTE:

For detailed operation procedures, refer to “PC application help for Subaru Select Monitor”.

Display

Contents to be displayed

Unit of

measure

FR Wheel Speed

Wheel speed detected by front ABS wheel speed sensor RH is displayed.

km/h or MPH

FL Wheel Speed

Wheel speed detected by front ABS wheel speed sensor LH is displayed.

km/h or MPH

RR Wheel Speed

Wheel speed detected by rear ABS wheel speed sensor RH is displayed.

km/h or MPH

RL Wheel Speed

Wheel speed detected by rear ABS wheel speed sensor LH is displayed.

km/h or MPH

Steer Angle Sensor Op

Steering angle detected by steering angle sensor is displayed.

deg

Yaw Rate Sensor Output

Vehicle angular speed detected by yaw rate sensor is displayed.

deg/s

Pressure Sensor Output

Brake fluid pressure detected by pressure sensor is displayed.

bar

Lateral G sensor Output

Vehicle lateral acceleration detected by lateral G sensor is displayed.

m/s

ABS_CM Power Voltage

Voltage supplied to VDCCM&H/U is displayed.

E/G Control Stop Flag

Engine control command signal is displayed.

1 or 0

ABS Control Flag

ABS operation condition is displayed.

ON or OFF

EBD Control Flag

EBD operation condition is displayed.

ON or OFF

TCS Control Flag

TCS operation condition is displayed.

ON or OFF

VDC Control Flag

VDC operation condition is displayed.

ON or OFF

OFF Lamp

ON/OFF condition of VDC OFF & VDC traction mode indicator light (6MT model)
or VDC OFF indicator light (5MT model) is displayed.

ON or OFF

EBD Warning Light

ON operation of the EBD warning light is displayed.

ON or OFF

ABS Warning Light

ON operation of the ABS warning light is displayed.

ON or OFF

VDC Warning Light

ON operation of the VDC warning light is displayed.

ON or OFF

Valve Relay Signal

Valve relay driving signal is displayed.

ON or OFF

Motor Relay Signal

Motor relay driving signal is displayed.

ON or OFF

M. Relay monitor Voltage

Voltage applied to the motor relay is displayed.

OFF SW Signal

Operation condition of VDC OFF switch is displayed.

ON or OFF

Brake Switch Signal

Brake ON/OFF is displayed.

ON or OFF

Fr Rr G sensor Output

Vehicle longitudinal acceleration detected by longitudinal G sensor is displayed.

m/s

Clutch Signal

Clutch ON/OFF is displayed.

ON or OFF

Reverse Signal

Reverse gear ON/OFF is displayed.

ON or OFF

VDC(diag)-20

Subaru Select Monitor

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

3. FUNCTION CHECK

4. FREEZE FRAME DATA

NOTE:

• Data stored at the time of trouble occurrence is shown on display.

• Each time a trouble occurs, the latest information is stored in the freeze frame data in memory.

• If a freeze frame data is not properly stored in memory (due to a drop in VDCCM power supply, etc.), a

DTC suffixed with a question mark “?” appears on the Subaru Select Monitor display. This shows it may be

an unreliable reading.

Display

Contents of display

Index No.

ABS Sequence Control Mode Operate the valve and pump motor continuously

to perform the ABS sequence control.

<Ref. to VDC-14, ABS Sequence Control.>

VDC Check Mode

Operate the valve and pump motor continuously
to perform the VDC sequence control.

<Ref. to VDC-17, VDC Sequence Control.>

Set up mode for Neutral of
Steering Angle Sensor & Lat-
eral G Sensor 0 point

Set the steering angle sensor neutral position
and the lateral G sensor “0” point.

<Ref. to VDC-22, Steering Angle Sensor.>

Display

Contents to be displayed

Steer Angle
Sensor Op

Steering angle detected by steering
angle sensor is displayed.

Yaw Rate Sen-
sor Output

Vehicle angular speed detected by yaw
rate sensor is displayed.

Lateral G sen-
sor Output

Vehicle lateral acceleration detected by
lateral G sensor is displayed.

Pressure Sen-
sor Output

Brake fluid pressure detected by pres-
sure sensor is displayed.

Vehicle speed

Vehicle speed calculated by VDC control
module is displayed.

FR Wheel
Speed

Wheel speed detected by front ABS
wheel speed sensor RH is displayed in
km/h or MPH.

FL Wheel Speed

Wheel speed detected by front ABS
wheel speed sensor LH is displayed in
km/h or MPH.

RR Wheel
Speed

Wheel speed detected by rear ABS
wheel speed sensor RH is displayed in
km/h or MPH.

RL Wheel
Speed

Wheel speed detected by rear ABS
wheel speed sensor LH is displayed in
km/h or MPH.

Accel opening
angle

Acceleration opening is displayed.

Engine Speed

Engine speed on malfunction occur-
rence is displayed.

Gear Position

Gear position on malfunction occurrence
is displayed.

ABS_CM Power
Voltage

Voltage supplied to VDC control module
is displayed.

Steering angle
flag

Whether the absolute angle of the steer-
ing angle sensor was determined is dis-
played.

E/G Control
Stop Flag

Engine control command signal is dis-
played.

VDC Control
Flag

VDC control condition is displayed.

EBD Control
Flag

EBD control condition is displayed.

TCS Control
Flag

TCS control condition is displayed.

ABS Control
Flag

ABS control condition is displayed.

OFF Switch
Detection

ON/OFF condition of the VDC operated
by the driver is displayed.

Brake Switch
Signal

Brake ON/OFF is displayed.

Fr Rr G sensor
Output

Vehicle longitudinal acceleration
detected by longitudinal G sensor is dis-
played.

Clutch Signal

Clutch ON/OFF is displayed.

Reverse Signal

Reverse gear ON/OFF is displayed.

Display

Contents to be displayed

VDC(diag)-21

Subaru Select Monitor

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

5. PARAMETER SELECTION

CAUTION:

• Subaru Select Monitor is required for param-

eter selection.

• This function can be used for the replace-

ment part of VDCCM&H/U and VDCCM.
NOTE:

• When the VDCCM is replaced with a replace-

ment part, be sure to perform the parameter selec-

tion/registration to the VDCCM using this function.

• For confirmation of applied models, refer to the

“Model number plate” attached to the vehicles.

<Ref. to ID-2, IDENTIFICATION, Identification.>

• When the applied model is entered wrong, re-en-

try is possible.

• When the registration has not been performed,

the DTC code “Parameter selection error” is detect-

ed together with the ABS/EBD/VDC warning light il-

lumination.

1) Connect the Subaru Select Monitor.

2) On «Main Menu» display, select {Each System

Check}.

3) On «System Selection Menu» display, select

{Brake Control System}.

4) When {VDC} is displayed, select the [OK] button.

5) On «Brake Control Diagnosis» display, select

{Select Parameter}.

6) Check the applied model and option code indi-

cated in the “Model number plate”. <Ref. to ID-2,

IDENTIFICATION, Identification.>

7) Enter the applied model of 7-digit alphanumeric

characters and press the [Enter] key.

8) When the option code input screen appears after

entering the applied model, enter the option code

consisting of 4-digit alphanumeric characters, and

press the [Enter] key When the option code is 3 dig-

its, add “0” in front and enter the code as 4 digits.

9) When the confirmation screen indicating the ve-

hicle information appears, check that the correct

applied model and grade are displayed and click

the [OK] button.
NOTE:

When the displayed applied model and grade are

different from those of the vehicle, perform registra-

tion operations again after clicking the [OK] button.

10) Execute Clear Memory after parameter selec-

tion and registration operations because the DTC

for “Parameter selection error” is memorized.

6. PARAMETER CHECK

NOTE:

The parameter data registered in the VDCCM is

shown on the display.

1) Connect the Subaru Select Monitor.

2) On «Main Menu» display, select {Each System

Check}.

3) On «System Selection Menu» display, select

{Brake Control System}.

4) Click the [OK] button after {VDC} is displayed.

5) On «Brake Control Diagnosis» display, select

{Confirm on parameter}.

6) On the {Confirm on parameter} display screen,

check that the applied model and grade of the tar-

get vehicle are included, and click the [OK] button.

7) If the applied model and grade of the target ve-

hicle are not included on the {Confirm on parame-

ter} display screen, perform parameter selection

and registration. <Ref. to VDC(diag)-21, PARAME-

TER SELECTION, OPERATION, Subaru Select

Monitor.>

VDC(diag)-22

Subaru Select Monitor

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

B: INSPECTION

1. COMMUNICATION FOR INITIALIZING IMPOSSIBLE

DETECTING CONDITION:

Defective harness connector

TROUBLE SYMPTOM:

Communication is impossible between VDC and Subaru Select Monitor.

WIRING DIAGRAM:

Vehicle Dynamics Control System <Ref. to WI-67, Vehicle Dynamics Control System.>

Step

Check

Yes

CHECK IGNITION SWITCH.

Is the ignition switch ON?

Go to step

Turn the ignition
switch to ON, and
select VDC mode
using Subaru
Select Monitor.

CHECK BATTERY.
1) Turn the ignition switch to OFF.
2) Measure the battery voltage.

Is the voltage 11 V or more?

Go to step

Charge or replace
the battery.

MAIN SBF

SBF-6

F/B

No.33

M/B No.13

B310 VDCCM & H/U

B40

B310

4 5 6 7 8 9

26 27 28 29 30

2 3

31 32 33 34 35 36

10 11

14 15 16 17 18 19

37 38 39 40

12 13

41 42 43 44 45 46

20 21

23 24

VDC00547

B40

1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16

B440

B441

1 2 3 4 5

BATTERY

DATA LINK

CONNECTOR

IGNITION

SWITCH

Content .. 528 529 530 531 ..