DTC C1424: ECM

DTC detecting condition: 

A fault is detected if malfunction judgment flag for the engine system is received from ECM for a predetermined time or more.

Trouble symptom: 

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

1. CHECK ECM  .
   1. Start the engine.
   2. Read the DTC of [Engine] using the Subaru Select Monitor. Refer to ENGINE (DIAGNOSTICS) (H4DO)>Diagnostic Trouble Code (DTC) . Refer to ENGINE (DIAGNOSTICS) (H4DOTC)>Diagnostic Trouble Code (DTC) .

      Are any DTCs displayed?

      Yes  : Perform the diagnosis according to the DTC. Refer to ENGINE (DIAGNOSTICS) (H4DO)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST . Refer to ENGINE (DIAGNOSTICS) (H4DOTC)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST .

      No  : Go to  2.

2. CHECK VDCCM&H/U  .
   1. Using the Subaru Select Monitor, perform the clear memory of [Brake Control]. Refer to COMMON (DIAG)>CLEAR MEMORY .
   2. Execute the inspection mode. Refer to BRAKE CONTROL (DIAGNOSTICS)>Inspection Mode .
   3. Read the DTC of [Brake Control] using the Subaru Select Monitor. Refer to BRAKE CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

      Is the same DTC displayed?

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

      No  : Go to  3.

3. CHECK DETECTION OF OTHER DTCS FOR VDC  .

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

   Is any other DTC displayed?

   Yes  : Perform the diagnosis according to the DTC. Refer 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.