Subaru Crosstrek manuals

Subaru Crosstrek Service Manual: Dtc c0047 can communication

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC C0047 CAN COMMUNICATION

DTC DETECTING CONDITION:

CAN communication line circuit is open or shorted.

TROUBLE SYMPTOM:

ABS does not operate.

VDC does not operate.

EyeSight does not operate.

STEPCHECKYESNO

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 C0047 CAN COMMUNICATION">Go to Step 2.

2.CHECK POOR CONTACT OF CONNECTORS.

Is there poor contact of VDCCM&H/U connector?

Repair the connector.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C0047 CAN COMMUNICATION">Go to Step 3.

3.CHECK OUTPUT OF STEERING ANGLE SENSOR WITH SUBARU SELECT MONITOR.

1) Using the Subaru Select Monitor, select “Data monitor”. Subaru Select Monitor > OPERATION">

2) Check the «Steer Angle Sensor Op».

Does «Steer Angle Sensor Op» change?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C0047 CAN COMMUNICATION">Go to Step 4.

Check output of the steering angle sensor. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C0071 STEER ANGLE SENSOR OP">

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)">

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

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