DTC C1411: Electrical Control Module

DTC detecting condition: 

• Judge as malfunction when ECM internal malfunction is detected.
• This malfunction is stored if the electronic parking brake does not operate.

Trouble symptom: 

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

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 

      (B66) No. 46 - 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. Using the Subaru Select Monitor, perform the clear memory of [Brake Control]. Ref. to COMMON (DIAGNOSTICS)>CLEAR MEMORY .
   3. Execute the inspection mode. Ref. to BRAKE CONTROL (DIAGNOSTICS)>INSPECTION MODE .
   4. Read the DTC of [Brake Control] using the Subaru Select Monitor. Ref. to BRAKE CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

   Is the same DTC displayed?

   Yes:  Replace the VDCCM & H/U. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM & H/U) .

   No:  Go to  6.

6. CHECK DETECTION OF OTHER DTCS FOR VDC  .

   Read the DTC of [Brake Control] using the Subaru Select Monitor. Ref. to BRAKE CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

   Is any other DTC displayed?

   Yes:  Perform the diagnosis according to the DTC. Ref. to BRAKE CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST .

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