DTC C1411: Electrical Control Module

DTC detecting condition: 

Defective VDCCM

Trouble symptom: 

• ABS does not operate.
• EBD does not operate.
• VDC does not operate.
• Hill start assist does not operate.
• Hill descent control does not operate. (Model with X mode)
• EyeSight does not operate. (Model with EyeSight)

Wiring diagram: 

Vehicle dynamics control system Ref. to WIRING SYSTEM>VEHICLE DYNAMICS CONTROL SYSTEM .

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK VDCCM&H/U GROUND CIRCUIT (CHECK FOR OPEN CIRCUIT)  .
   1. Turn the ignition switch to OFF.
   2. Disconnect the connector from the VDCCM&H/U.
   3. Measure the resistance between VDCCM&H/U and chassis ground.

      Connector & terminal

      (B310) No. 38 - Chassis ground:

   Is the resistance less than 10 Ω

   Yes: Go to  2.

   No: Repair the VDCCM&H/U ground harness.

2. CHECK POOR CONTACT OF CONNECTORS  .

   Is there poor contact of the connector between the battery, ignition switch and VDCCM&H/U?

   Yes: Repair the connector.

   No: Go to  3.

3. CHECK CAUSE OF SIGNAL NOISE  .

   Are the radio wave devices and electronic components installed correctly?

   Yes: Go to  4.

   No: Install the radio wave devices and electronic components properly.

4. CHECK CAUSE OF SIGNAL NOISE  .

   Is there a noise source (such as an antenna) installed near the sensor harness and VDCCM?

   Yes: Install the noise sources apart from sensor harness and VDCCM.

   No: Go to  5.

5. CHECK VDCCM&H/U  .
   1. Connect all connectors.
   2. Clear the memory. Ref. to BRAKE CONTROL (DIAGNOSTICS)>Clear memory .
   3. Perform the Inspection Mode. Ref. to BRAKE CONTROL (DIAGNOSTICS)>Inspection Mode .
   4. Read the DTC. Ref. to BRAKE CONTROL (DIAGNOSTICS)>Read Diagnostic Trouble Code (DTC) .

   Is the same DTC displayed?

   Yes: Replace the VDCCM only. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC Control Module and Hydraulic Control Unit (VDCCM & H/U)>REPLACEMENT .

   No: Go to  6.

6. CHECK DETECTION OF OTHER DTCS FOR VDC  .

   Ref. to BRAKE CONTROL (DIAGNOSTICS)>Read Diagnostic Trouble Code (DTC) .

   Is any other DTC displayed?

   Yes: Perform the diagnosis according to DTC. Ref. to BRAKE CONTROL (DIAGNOSTICS)>List of Diagnostic Trouble Code (DTC) .

   No: Currently, it is normal. There may have been a temporary poor contact in the harness and connector or a temporary noise interference.