DTC C1732: Lateral G Sensor

DTC detecting condition: 

• A fault is detected if the sensor signal value is not correct.
• A fault is detected if the steering angle sensor signal/yaw rate sensor signal change while the lateral G sensor signal indicates a constant value.
• A fault is detected if the communication status of lateral G sensor is abnormal.

Trouble symptom: 

• ABS does not operate.
• VDC does not operate.
• AVH does not function.
• EyeSight does not operate.

1. CHECK INSTALLATION OF VDCCM AND H/U  .

   Is VDCCM and H/U installed properly without being tilted?

   Is the bracket deformation-free?

   Are the VDCCM and H/U installation bolts installed without missing or getting loose?

   Yes:  Go to  2 .

   No:  Repair the defective part.

   • Install VDCCM and H/U properly.
   • Replace the bracket if faulty.
   • Tighten the VDCCM and H/U installation bolt. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>GENERAL DESCRIPTION>COMPONENT>VDC CONTROL MODULE and HYDRAULIC CONTROL UNIT (VDC CM and H/U) .

     Go to  2 .

2. CHECK OUTPUT OF STEERING ANGLE SENSOR USING SUBARU SELECT MONITOR  .
   1. Park the vehicle straight on a level surface.
   2. Using the Subaru Select Monitor, read data of [Steering Angle Sensor] in the [Data Monitor] of [Brake Control]. Ref. to BRAKE CONTROL (DIAGNOSTICS)>DATA MONITOR .

   Is the value of [Steering Angle Sensor] between -10 - 10 deg?

   Yes:  Go to  3 .

   No:  Check the installation of steering angle sensor.

3. CHECK OUTPUT OF LATERAL G SENSOR AND LONGITUDINAL G SENSOR WITH SUBARU SELECT MONITOR  .
   1. Park the vehicle straight on a level surface.
   2. Using the Subaru Select Monitor, read data of [Lateral G Sensor], [Longitudinal G Sensor] in the [Data Monitor] of [Brake Control]. Ref. to BRAKE CONTROL (DIAGNOSTICS)>DATA MONITOR .

   Are the values of [Lateral G Sensor] and [Longitudinal G Sensor] between -2 - 2 m/s^2?

   Yes:  Go to  4 .

   No:  Recheck from step 1, and if the problem is not solved, Go to  7 .

4. SET 0 POINT OF LATERAL G SENSOR AND LONGITUDINAL G SENSOR WITH SUBARU SELECT MONITOR  .
   1. Select the [Work Support] using Subaru Select Monitor. Ref. to BRAKE CONTROL (DIAGNOSTICS)>WORK SUPPORT .
   2. Perform the VDC sensor midpoint setting mode. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM and H/U)>ADJUSTMENT>VDC SENSOR MIDPOINT SETTING MODE .

   Is 0 point setting successful?

   Yes:  Go to  5 .

   No:  Recheck from step 1, and when the 0 point setting is not possible, replace the VDCCM and H/U. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM and H/U) .

5. PERFORM DRIVING TEST  .

   Ref. to BRAKE CONTROL (DIAGNOSTICS)>INSPECTION MODE .

   Does the ABS warning light or VDC warning light illuminate during driving?

   Does ABS or VDC operate abnormally?

   Yes:  Recheck from step 1, and when the warning lights illuminate or improperly operate, replace the VDCCM and H/U. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM and H/U) .

   No:  Go to  6 .

6. CHECK OUTPUT OF LATERAL G SENSOR AND LONGITUDINAL G SENSOR WITH SUBARU SELECT MONITOR  .
   1. Park the vehicle on a level surface.
   2. Using the Subaru Select Monitor, read data of [Lateral G Sensor], [Longitudinal G Sensor] in the [Data Monitor] of [Brake Control]. Ref. to BRAKE CONTROL (DIAGNOSTICS)>DATA MONITOR .

   Are the values of [Lateral G Sensor] and [Longitudinal G Sensor] between -1.5 - 1.5 m/s^2?

   Yes:  Currently, it is normal. There may have been a temporary poor contact in the harness and connector or a temporary noise interference.

   No:  Recheck from step 1, and if the problem is not solved, replace the VDCCM and H/U. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM and H/U) .

7. CHECK OUTPUT OF LATERAL G SENSOR AND LONGITUDINAL G SENSOR WITH SUBARU SELECT MONITOR  .
   1. Remove the VDCCM and H/U installation bolt and bracket.
   2. Keep VDCCM and H/U in a horizontal position.
   3. Using the Subaru Select Monitor, read data of [Lateral G Sensor], [Longitudinal G Sensor] in the [Data Monitor] of [Brake Control]. Ref. to BRAKE CONTROL (DIAGNOSTICS)>DATA MONITOR .

   When the VDCCM and H/U is in a horizontal position, are the values of [Lateral G Sensor] and [Longitudinal G Sensor] between -1.5 - 1.5 m/s^2?

   Yes:  Check the bracket and brake pipe, and install VDCCM and H/U in a horizontal position to the vehicle.

   No:  Replace the VDCCM and H/U. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM and H/U) .