Subaru Legacy 2003 Service Manual page 2966

2. YAW RATE SENSOR SIGNAL
1 CHECK YAW RATE AND LATERAL G SEN-
SOR USING OSCILLOSCOPE.
1) Connect all connectors.
2) Set oscilloscope to TCM connector termi-
nals.
Positive probe; (R100) No. 4
Earth lead; (R100) No. 6
3) Start the engine.
4) Measure signal voltage indicated on oscillo-
scope. <Ref. to VDC-17, WAVEFORM,
MEASUREMENT, Control Module I/O Sig-
nal.>
Is the voltage within the specified range?
2 CHECK YAW USING OSCILLOSCOPE.
1) Turn ignition switch to OFF.
2) Set oscilloscope to TCM connector termi-
nals.
Positive probe; (R100) No. 2
Earth lead; (R100) No. 6
3) Start the engine.
4) Measure signal voltage indicated on oscillo-
scope. <Ref. to VDC-17, WAVEFORM,
MEASUREMENT, Control Module I/O Sig-
nal.>
Is the voltage within the specified range?
YAW RATE AND LATERAL G SENSOR
Step Value
2.1 V — 2.9 V
5 V
VDC-25
Yes
Go to step 2. Replace yaw rate
and lateral G sen-
sor is normal.
Yaw rate and lat- Replace yaw rate
eral G sensor is and lateral G sen-
normal. sor.
VDC
No