DTC C0057 ECM Communication Circuit: Trouble Symptom
WARNING: This page is about a different car, the 2012 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
- ABS does not operate.
- VDC does not operate.
DIAGNOSTIC PROCEDURE CHART
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK LAN SYSTEM. Perform the diagnosis for LAN system. < Ref. to OPERATION , Read Diagnostic Trouble Code (DTC). > |
Is there any fault in LAN system? | Perform the diagnosis according to DTC for LAN system. < Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > | Go to step 2 . |
| 2 CHECK POOR CONTACT OF CONNECTORS. | Is there poor contact of ECM connector? | Repair the connector. | Go to step 3 . |
| 3 CHECK ECM. Refer to the BASIC DIAGNOSTIC PROCEDURE for each engine (diagnostics). |
Is ECM normal? | Go to step 4. | Replace the ECM. < Ref. to ENGINE CONTROL MODULE (ECM) . > < Ref. to ENGINE CONTROL MODULE (ECM) . > |
4 CHECK VDCCM&H/U.
|
Is the same DTC displayed? | Replace the VDCCM only. < Ref. to REPLACEMENT , VDC Control Module and Hydraulic Control Unit (VDCCM&H/U). > | Go to step 5 . |
| 5 CHECK OTHER DTC DETECTION. | Is any other DTC displayed? | Perform the diagnosis according to DTC. < Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > | It results from a temporary noise interference. |