Subaru Crosstrek Service Manual: Dtc c0046 body integrated module communication circuit
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC C0046 BODY INTEGRATED MODULE COMMUNICATION CIRCUIT
DTC detecting condition:
No CAN signal received from body integrated unit.
Trouble symptom:
• VDC may not operate.
• Hill start assist does not operate.
| STEP | CHECK | YES | NO |
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 C0046 BODY INTEGRATED MODULE COMMUNICATION CIRCUIT">Go to Step 2.
2.CHECK POOR CONTACT OF CONNECTORS.
Is there poor contact of body integrated unit connector?
Repair the connector.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C0046 BODY INTEGRATED MODULE COMMUNICATION CIRCUIT">Go to Step 3.
3.CHECK BODY INTEGRATED UNIT.
Perform the diagnosis for body integrated unit. Basic Diagnostic Procedure">
Is the check result OK?
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C0046 BODY INTEGRATED MODULE COMMUNICATION CIRCUIT">Go to Step 4.
Perform the diagnosis according to DTC. List of Diagnostic Trouble Code (DTC)">
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 C0046 BODY INTEGRATED MODULE 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.
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Do not drive with your foot resting on the
clutch pedal and do not use the clutch to
hold your vehicle at a standstill on an
upgrade. Either of those actions may
cause clutch damage.
Do not drive with your hand resting on the
shift lever. This may cause wear on the
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