Subaru Legacy 2004 Service Manual page 3189

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step
10 CHECK YAW RATE & LATERAL G SENSOR.
1) Turn the ignition switch to OFF.
2) Connect all the connectors.
3) Turn the ignition switch to ON.
4) Measure the voltage between VDCCM&H/
U connector terminals.
Connector & terminal
(B310) No. 1 (+) — No. 16 (
11 CHECK YAW RATE & LATERAL G SENSOR.
1) Turn the ignition switch to ON.
2) Check the signal pattern of oscilloscope
between VDCCM&H/U connector terminals.
<Ref. to VDC(diag)-15, WAVEFORM, MEA-
SUREMENT, Control Module I/O Signal.>
Connector & terminal
(B310) No. 2 — No. 16:
(B310) No. 28 — No. 16:
12 CHECK YAW RATE & LATERAL G SENSOR.
1) Turn the ignition switch to OFF.
2) Connect all the connectors.
3) Erase the memory.
4) Perform the inspection mode.
5) Read the DTC.
13 CHECK VDCCM&H/U.
1) Turn the ignition switch to OFF.
2) Replace the yaw rate & lateral G sensor.
3) Erase the memory.
4) Perform the inspection mode.
5) Read the DTC.
14 CHECK YAW RATE & LATERAL G SENSOR.
1) Turn the ignition switch to OFF.
2) Connect all the connectors.
3) Erase the memory.
4) Perform the inspection mode.
5) Read the DTC.
15 CHECK OTHER DTC DETECTION.
16 CHECK OTHER DTC DETECTION.
Is the voltage 2.1 — 2.9 V?
#
):
Is the oscilloscope pattern the
same waveform as shown in
the figure?
Is the same DTC displayed?
Is the same DTC displayed?
Is the same DTC displayed?
Is any other DTC displayed?
Is any other DTC displayed?
VDC(diag)-116
Check Yes
Go to step 11.
Go to step 12.
Go to step 13.
Replace the
VDCCM&H/U.
<Ref. to VDC-7,
VDC Control Mod-
ule & Hydraulic
Control Unit
(VDCCM&H/U).>
Replace the
VDCCM&H/U.
<Ref. to VDC-7,
VDC Control Mod-
ule & Hydraulic
Control Unit
(VDCCM&H/U).>
Perform the diag-
nosis according to
DTC.
Perform the diag-
nosis according to
DTC.
No
Replace the yaw
rate & lateral G
sensor.
Replace the yaw
rate & lateral G
sensor.
Go to step 15.
Go to step 16.
Go to step 15.
Temporary poor
contact occurs.
Malfunction is
found in original
yaw rate & lateral
G sensor.