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Diagnostic Procedure

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK POWER SUPPLY FOR YAW RATE & G SENSOR. 
  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? Go to step 2  . Repair the yaw rate & G sensor power supply circuit.
2 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 10 Ω? Go to step 3  . Repair the yaw rate & G sensor ground circuit.
3 CHECK YAW RATE & G SENSOR HARNESS. 
  1. Disconnect the connector from the VDCCM&H/U.
  2. Measure the resistance between VDCCM&H/U and yaw rate & G sensor.

    Connector & terminal 

    (B230) No. 3 - (B310) No. 10: 

    (B230) No. 2 - (B310) No. 35: 

 Is the resistance less than 1 Ω? Go to step 4  . Repair the harness between yaw rate & G sensor and VDCCM&H/U.
4 CHECK GROUND SHORT CIRCUIT IN YAW RATE & G SENSOR HARNESS. 
Measure the resistance between yaw rate & G sensor and chassis ground.
Connector & terminal 
(B230) No. 2 - Chassis ground: 
(B230) No. 3 - Chassis ground: 		 Is the resistance 1 MΩ or more? Go to step 5  . Repair the harness between yaw rate & G sensor and VDCCM&H/U.
5 CHECK YAW RATE & G SENSOR. 
  1. Turn the ignition switch to OFF.
  2. Connect all connectors.
  3. Clear the memory. < Refer to CLEAR MEMORY MODE . >
  4. Perform the Inspection Mode. < Refer to INSPECTION MODE . >
  5. Read the DTC.
 Is the same DTC displayed? Go to step 6  . Go to step 7  .
6 CHECK YAW RATE & G SENSOR. 
  1. Turn the ignition switch to OFF.
  2. Replace the yaw rate & G sensor. < Refer to YAW RATE AND G SENSOR . >
  3. Clear the memory. < Refer to CLEAR MEMORY MODE . >
  4. Perform the Inspection Mode. < Refer to INSPECTION MODE . >
  5. Read the DTC.
 Is the same DTC displayed? Replace the VDCCM only. < Refer to REPLACEMENT , VDC Control Module and Hydraulic Control Unit (VDCCM&H/U). > Go to step 8  .
7 CHECK OTHER DTC DETECTION.  Is any other DTC displayed? Perform the diagnosis according to DTC. < Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > Temporary poor contact occurs.
8 CHECK OTHER DTC DETECTION.  Is any other DTC displayed? Perform the diagnosis according to DTC. < Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > Malfunction is found in original yaw rate & G sensor.
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