Nissan Juke Service and Repair Manual : U0300 can communication data

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 independently). In CAN communication, control units are connected with 2 communication lines (CAN-H line, CAN-L line) 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 CONFIRMATION PROCEDURE


DTC CONFIRMATION PROCEDURE

1.PREPARATION BEFORE WORK

If another DTC CONFIRMATION PROCEDURE occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.

>> GO TO 2.

2.CHECK DTC DETECTION

1. Start the engine and wait for 5 seconds or more.With CONSULT-III


1. Start the engine and wait for 5 seconds or more.

2. Check the DTC.

Is U0300 detected? YES >> Go to TM-389, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CONTROL UNIT CHECK

Check the number of control units replaced before U0300 is detected.

Is one control unit replaced? YES >> The specification of the control unit replaced may be incorrect. Check the part number and the specification.

NO >> GO TO 2.

2.CONTROL UNIT CHECK

1. Remove one of the control unit replaced.With CONSULT-III


1. Remove one of the control unit replaced.

2. Assemble the old control unit before replacement.

3. Turn ignition switch ON, and wait for 2 seconds or more.

4. Select Self Diagnostic Results in TRANSMISSION.

Is U0300detected? YES >> Turn OFF the ignition switch and check other control units in the same manner.

NO >> The specification of the control unit removed may be incorrect. Check the part number and the specification.

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