Subaru Legacy 2004 Service Manual page 3090

• If a particular DTC is not properly stored in mem-
ory (due to a drop in VDCCM&H/U power supply,
etc.) on the occurrence of a problem, the DTC
which is suffixed with a question mark "?" appears
on the Subaru Select Monitor display. This shows it
may be an unreliable reading.
10) If VDC and Subaru Select Monitor cannot com-
municate, check the communication circuit. <Ref.
to VDC(diag)-19, COMMUNICATION FOR INI-
TIALIZING IMPOSSIBLE, INSPECTION, Subaru
Select Monitor.>
2. READ CURRENT DATA
1) On the «Main Menu» display screen, select the {Each System Check} and press the [YES] key.
2) On the «System Selection Menu» display screen, select the {Brake Control} and press the [YES] key.
3) Press the [YES] key after {VDC 4WD AT} is displayed.
4) On the «Brake Control Diagnosis» display screen, select the {Current Data Display/Save}, and then press
the [YES] key.
5) On the «Data Display Menu» display screen, select the display method, and press the [YES] key.
6) Using a 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.
Display
FR Wheel Speed
FL Wheel Speed
RR Wheel Speed
RL Wheel Speed
Steering Angle Sensor
Yaw Rate Sensor
Pressure Sensor
Lateral G Sensor
IG power supply voltage
EMA signal
TCS Operation Light
VDC Operation Light
VDC OFF Light
EBD Warning Light
ABS Warning Light
VDC Warning Light
VDC OK-B signal
Valve Relay Signal
Motor Relay Signal
Motor Relay Monitor
PATA Signal
BLS Signal
Gear position
Engine Speed
PW Signal
Subaru Select Monitor
Contents to be monitored
Wheel speed detected by front ABS wheel speed sensor RH is dis-
played.
Wheel speed detected by front ABS wheel speed sensor LH is dis-
played.
Wheel speed detected by rear ABS wheel speed sensor RH is dis-
played.
Wheel speed detected by rear ABS wheel speed sensor LH is dis-
played.
Steering angle detected by steering angle sensor is displayed.
Vehicle angular speed detected by yaw rate sensor is displayed.
Brake fluid pressure detected by pressure sensor is displayed.
Vehicle lateral acceleration detected by lateral G sensor is dis-
played.
Voltage supplied to VDCCM&H/U is displayed.
Engine control command signal is displayed.
TCS operation condition is displayed.
VDC operation condition is displayed.
ON/OFF condition of VDC OFF indicator light is displayed.
ON operation of the EBD warning light is displayed.
ON operation of the ABS warning light is displayed.
ON operation of the VDC warning light is displayed.
Malfunction of VDC sensor (except for vehicle speed sensor) is
displayed.
Valve relay operation signal is displayed.
Motor relay operation signal is displayed.
Motor relay monitor signal is displayed.
Operation condition of VDC OFF switch is displayed.
Brake ON/OFF is displayed.
Present gear position is displayed.
Current engine speed is displayed.
Acceleration opening is displayed.
VDC(diag)-17
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Display
Indicate the latest DTC on the Subaru
Current
Select Monitor display.
Indicate the latest DTC in previous trou-
Old
ble on the Subaru Select Monitor display.
Indicate the latest DTC in second previ-
Older ous trouble on the Subaru Select Monitor
display.
Indicate the latest DTC in third previous
Before 3 trouble on the Subaru Select Monitor dis-
play.
Contents to be monitored
Unit of measure
km/h or MPH
km/h or MPH
km/h or MPH
km/h or MPH
deg
deg/s
bar
m/s (m/s^2)
V
1 or 0
ON or OFF
ON or OFF
ON or OFF
ON or OFF
ON or OFF
ON or OFF
1 or 0
ON or OFF
ON or OFF
ON or OFF
ON or OFF
ON or OFF
—
rpm
%