VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC C0072 CHANGE RANGE OF YAW RATE SENSOR SIGNAL IS TOO BIG

DTC DETECTING CONDITION:

Defective yaw rate sensor

TROUBLE SYMPTOM:

VDC does not operate.

WIRING DIAGRAM:

• LHD model

• RHD model

STEPCHECKYESNO

1.CHECK DRIVING PLACE.

Check if the vehicle ran the road with banks or sandy surface (which does not mean a dirt road).

Did the vehicle run the road with banks or sandy surface (which does not mean a dirt road)?

VDCCM&H/U may record DTC when the vehicle ran the road with banks or sandy surface (which does not mean a dirt road).

2.CHECK YAW RATE & G SENSOR INSTALLATION.

Is the yaw rate & G sensor installation bolt tightened to 7.5 N·m (0.76 kgf-m, 5.5 ft-lb)?

Tighten the yaw rate & G sensor attachment bolt.

3.CHECK YAW RATE & G SENSOR POWER SUPPLY.

1) Turn the ignition switch to OFF.

2) Disconnect the connector from yaw rate & G sensor.

3) Turn the ignition switch to ON.

4) Measure the voltage between yaw rate & G sensor and chassis ground.

Connector & terminal

(B230) No. 1 (+) — Chassis ground (−):

Is the voltage 10 — 15 V?

Repair the yaw rate & G sensor power supply circuit.

4.CHECK YAW RATE & G SENSOR GROUND CIRCUIT.

Measure the resistance between yaw rate & G sensor and chassis ground.

Connector & terminal

(B230) No. 4 — Chassis ground:

Is the resistance less than 0.5 Ω?

Repair the yaw rate & G sensor ground circuit.

5.CHECK OUTPUT OF YAW RATE & G SENSOR WITH SUBARU SELECT MONITOR.

1) Drive the vehicle on a flat road.

2) Park the vehicle straight.

3) Select {Current Data Display & Save} in Subaru Select Monitor.

4) Read the yaw rate output displayed on display.

Is the reading indicated on monitor display −4 — 4 deg/s?

Replace the yaw rate & G sensor.

6.CHECK YAW RATE & G SENSOR.

1) Turn the ignition switch to OFF.

2) Connect all connectors.

3) Clear the memory.

4) Perform the Inspection Mode.

5) Read the DTC.

Is the same DTC displayed?

7.CHECK VDCCM&H/U.

1) Turn the ignition switch to OFF.

2) Replace the yaw rate & G sensor.

3) Clear the memory.

4) Perform the Inspection Mode.

5) Read the DTC.

Is the same DTC displayed?

Replace the VDCCM only.

8.CHECK OTHER DTC DETECTION.

Is any other DTC displayed?

Perform the diagnosis according to DTC.

Temporary poor contact occurs.

9.CHECK OTHER DTC DETECTION.

Is any other DTC displayed?

Perform the diagnosis according to DTC.

Malfunction is found in original yaw rate & G sensor.