Subaru Legacy 2002 Service Manual page 2587

DIAGNOSTICS CHART WITH DIAGNOSIS CONNECTOR
VDC (Diagnostics)
No.
8 CHECK LATERAL G SENSOR.
1) Turn ignition switch to OFF.
2) Remove yaw rate and lateral G sensor
from vehicle.
3) Connect connector to yaw rate and lateral
G sensor.
4) Connect connector to VDCCM.
5) Turn ignition switch to ON.
6) Measure voltage between yaw rate and
lateral G sensor connector terminals.
Connector & terminal
(R100) No. 5 (+) — No. 6 (−):
9 CHECK YAW RATE AND LATERAL G SEN-
SOR.
Measure voltage between yaw rate and lateral
G sensor connector terminals.
Connector & terminal
(R100) No. 5 (+) — No. 6 (−):
10 CHECK YAW RATE AND LATERAL G SEN-
SOR.
Measure voltage between yaw rate and lateral
G sensor connector terminals.
Connector & terminal
(R100) No. 5 (+) — No. 6 (−):
11 CHECK POOR CONTACT IN CONNEC-
TORS.
12 CHECK VDCCM.
1) Connect all connectors.
2) Erase the memory.
3) Perform inspection mode.
4) Read out the diagnostic trouble code.
13 CHECK ANY OTHER DIAGNOSTIC
TROUBLE CODES APPEARANCE.
Step
Is the voltage between 2.3
and 2.7 V when yaw rate
and lateral G sensor is
horizontal?
Is the voltage between 3.3
and 3.7 V when yaw rate
and lateral G sensor is
horizontal, and is inclined
90° to the left in front of the
sensor?
Is the voltage between 1.3
and 1.7 V when yaw rate
and lateral G sensor is
horizontal, and is inclined
90° to the right in front of
the sensor?
Is there poor contact in
connector between
VDCCM and yaw rate and
lateral G sensor?
Is the same diagnostic
trouble code as in the cur-
rent diagnosis still being
output?
Are other diagnostic trouble
codes being output?
VDC-128
Check Yes
Go to step 9.
Go to step 10.
Go to step 11.
Repair connector.
Replace VDCCM.
<Ref. to VDC-9,
VDC Control Mod-
ule (VDCCM).>
Proceed with the
diagnosis corre-
sponding to the
diagnostic trouble
code.
No
Replace yaw rate
and lateral G sen-
sor. <Ref. to VDC-
22, Yaw Rate and
Lateral G Sen-
sor.>
Replace yaw rate
and lateral G sen-
sor. <Ref. to VDC-
22, Yaw Rate and
Lateral G Sen-
sor.>
Replace yaw rate
and lateral G sen-
sor. <Ref. to VDC-
22, Yaw Rate and
Lateral G Sen-
sor.>
Go to step 12.
Go to step 13.
A temporary poor
contact.