Subaru 2004 LEGACY, Service Manual

Page: 441 / 609

VDC(diag)-119
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK YAW RATE & LATERAL G SENSOR
INSTALLATION. Is the yaw rate & lateral G sen-
sor installation bolt tightened to
7.5 N
⋅
m (0.76 kgf-m, 5.5 ft-lb)?
Go to step 2. Tighten the yaw
rate & lateral G
sensor installation
bolt.
2 CHECK LATERAL G SENSOR OUTPUT.
1) Park the vehicle on a level surface.
2) Select {Current Data Display & Save} in
Subaru Select Monitor.
3) Read the lateral G sensor output displayed
on display. Is the indicated reading on the
monitor display
−
1.5 — 1.5
m/s
2
?
Go to step 3. Replace the yaw
rate & lateral G
sensor.
3 CHECK LATERAL G SENSOR OUTPUT.
1) Turn the ignition switch to OFF.
2) Remove the yaw rate & lateral G sensor
from vehicle.
3) Turn the ignition switch to ON, and select
{Current Data Display & Save} in Subaru
Select Monitor.
4) Read the lateral G sensor output displayed
on display. When the yaw rate & lateral G
sensor is inclined 90
°
to the
right, is the indicated value 6.8
— 12.8 m/s
2
?
Go to step 4. Replace the yaw
rate & lateral G
sensor.
4 CHECK LATERAL G SENSOR.
Read the lateral G sensor output displayed on
screen. When the yaw rate & lateral G
sensor is inclined 90
°
to the
left, is the indicated value
−
6.8
—
−
12.8 m/s
2
?
Go to step 5. Replace the yaw
rate & lateral G
sensor.
5 CHECK POOR CONTACT IN CONNECTORS.
Turn the ignition switch to OFF. Is there poor contact in con-
nector between VDCCM&H/U
and yaw rate & lateral G sen-
sor? Repair the con-
nector. Go to step 6.
6 CHECK VDCCM&H/U.
1) Connect all the connectors.
2) Erase the memory.
3) Perform the inspection mode.
4) Read the DTC. Is the same DTC displayed? Replace the
VDCCM&H/U.
<Ref. to VDC-7,
VDC Control Mod-
ule & Hydraulic
Control Unit
(VDCCM&H/U).> Go to step 7.
7 CHECK OTHER DTC DETECTION. Is any other DTC displayed? Perform the diag-
nosis according to
DTC. Temporary poor
contact occurs.