Nissan Versa Sedan Service ManualTransmission & driveline » Transaxle & transmission (TM)
P0863 TCM Communication
P0863 TCM Communication
Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent malfunction detection ability.
Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN-H and CAN-L) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.
DTC Logic
DTC DETECTION LOGIC
| DTC | Trouble diagnosis name | DTC detection condition | Possible causes |
| P0863 | TCM Communication Circuit | When detecting error during the initial diagnosis of CAN controller to TCM. | Harness or connectors (CAN communication line is open or shorted.) |
DTC CONFIRMATION PROCEDURE
1.PREPARATION BEFORE WORK
If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn the ignition switch OFF and wait for at least 10 seconds, then perform the next test.
>> GO TO 2.
2.CHECK DTC DETECTION
With CONSULT
- Start engine and wait for at least 10 seconds.
- Check DTC.
Is "P0863" detected?
YES >> Go to TM, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI "Intermittent Incident".
Diagnosis Procedure
1.CHECK CAN COMMUNICATION CIRCUIT
With CONSULT
- Start the engine.
- Check DTC.
Is "P0863" indicated?
YES >> Replace the TCM. Refer to TM, "Removal and Installation".
NO >> Check intermittent incident. Refer to GI, "Intermittent Incident".