P1764

DTC P1764 TCU CAN MI-COM MALFUNCTION

COMPONENT LOCATION:

GENERAL DESCRIPTION
The TCM can either receive data from the Engine Control Module or ABS control module, or it can send data to the ECM and ABSCM by using CAN communication. The CAN communication is one of the vehicle communications method, which is now widely used to transfer the vehicle data.

DTC DESCRIPTION
When the TCM judges that the CAN micro-computer, which is installed inside the TCM, is malfunctioning, the TCM sets this code.

DTC DETECTING CONDITION

DTC DETECTING CONDITION:

MONITOR SCAN TOOL DATA
1. Connect scan tool to data link connector (DLC).
2. Engine "ON".
3. Monitor the "CAN COMMUNICATION SERVICE DATA (ENGINE RPM, VEHICLE SPEED SENSOR, THROTTLE P. SENSOR, SHIFT POSITION, AIR/C ON. SWITCH, ENGINE TORQUE)" parameters on the scan tool.





Does "CAN BUS LINE DATA " follow the reference data?
YES - Fault is intermittent caused by poor contact in the sensor's and/or TCM (PCM)'s connector or was repaired and TCM (PCM) memory was not cleared. And go to Verification of Vehicle Repair procedure.
NO - Replace TCM as necessary and then go to "Verification of Vehicle Repair" procedure.

VERIFICATION OF VEHICLE REPAIR
After a repair, it is essential to verify that the fault has been corrected.
1. Connect scan tool and select "Diagnostic Trouble Codes (DTCs)" mode.
2. Using a scan tool, Clear DTC.
3. Operate the vehicle within DTC Enable conditions in General information.
4. Are any DTCs present?
YES - Go to the applicable troubleshooting procedure. Transmission
NO - System performing to specification at this time.