VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC C0044 TCM COMMUNICATION CIRCUIT
DTC detecting condition:
No CAN signal from TCM.
Trouble symptom:
• ABS does not operate.
• VDC does not operate.
• EyeSight 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 C0044 TCM COMMUNICATION CIRCUIT">Go to Step 2.
2.CHECK POOR CONTACT OF CONNECTORS.
Is there poor contact of TCM connector?
Repair the connector.
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C0044 TCM COMMUNICATION CIRCUIT">Go to Step 3.
3.CHECK TCM.
Refer to the basic diagnostic procedure for Transmission (diagnostics).
Is the check result OK?
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C0044 TCM COMMUNICATION CIRCUIT">Go to Step 4.
Replace the TCM. Transmission Control Module (TCM)">
4.CHECK VDCCM&H/U.
1) Perform the Clear Memory Mode. Clear Memory Mode">
2) Perform the Inspection Mode. Inspection Mode">
3) 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 C0044 TCM 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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