Subaru Crosstrek Service Manual: Dtc c0057 ecm communication circuit

DTC detecting condition:

No CAN signal from ECM.

Trouble symptom:

• VDC does not operate.

• EyeSight does not operate.

1.CHECK LAN SYSTEM.

Perform the diagnosis for LAN system. Basic Diagnostic Procedure">

Is there any fault in LAN system?

Perform the diagnosis according to DTC for LAN system. List of Diagnostic Trouble Code (DTC)">

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C0057 ECM COMMUNICATION CIRCUIT">Go to Step 2.

2.CHECK POOR CONTACT OF CONNECTORS.

Is there poor contact of ECM connector?

Repair the connector.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C0057 ECM COMMUNICATION CIRCUIT">Go to Step 3.

3.CHECK ECM.

Refer to the basic diagnostic procedure of ENGINE (DIAGNOSTICS).

Is the check result OK?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C0057 ECM COMMUNICATION CIRCUIT">Go to Step 4.

Replace the ECM. Engine Control Module (ECM)">

4.CHECK VDCCM&H/U.

1) Connect all connectors.

2) Perform the Clear Memory Mode. Clear Memory Mode">

3) Perform the Inspection Mode. Inspection Mode">

4) Read the DTC. Read Diagnostic Trouble Code (DTC)">

Is the same DTC displayed?

Replace the VDCCM&H/U. VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)">

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C0057 ECM COMMUNICATION CIRCUIT">Go to Step 5.

5.CHECK DETECTION OF OTHER DTCS FOR VDC.

Read Diagnostic Trouble Code (DTC)">

Is any other DTC displayed?

Perform the diagnosis according to DTC. List of Diagnostic Trouble Code (DTC)">

Currently, it is normal. There may have been a temporary poor contact in the harness and connector or a temporary noise interference.

Dtc c0047 can communication

Dtc c0057 ecm control system

Other materials:

Removal
FUEL INJECTION (FUEL SYSTEMS)(H4DO) > Fuel Pump RelayREMOVAL1. Disconnect the ground cable from battery.2. Remove the glove box. Glove Box > REMOVAL">3. Remove the fuel pump relay from relay block. ...

Suspension Inspection
PERIODIC MAINTENANCE SERVICES > SuspensionINSPECTION1. FRONT SUSPENSION BALL JOINT1. Lift up the vehicle until front wheels are off ground.2. Grasp the bottom of tire and move it in and out in axial direction. If movement (B) is observed between the brake disc cover (A) and end of front arm (D), ...

Headlight flasher
CAUTION Do not hold the lever in the flashing position for more than just a few seconds. To flash the headlights, pull the lever toward you and then release it. The high beam will stay on for as long as you hold the lever. The headlight flasher works even though the lighting switch is in ...