Nissan Sentra B18 (2020-2025) Service Manual: U0300-00 Can Communication Data

Nissan Sentra B18 (2020-2025) Service Manual / Transmission & Driveline / Transaxle & Transmission :: Cvt: Re0f15a / Dtc/circuit Diagnosis / U0300-00 Can Communication Data

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
U0300	00	CAN COMM DATA (Internal Control Module Software Incompatibility)	Diagnosis condition	When the ignition switch is ON
			Signal	CAN communication signal
			Threshold	The data length transmitted from each control unit is shorter than the specified length and the status
			Diagnosis delay time	2 seconds

POSSIBLE CAUSE

Control unit other than TCM

FAIL-SAFE

Selector shock is large
Start is slow
Acceleration is slow
Lock-up is not performed

DTC CONFIRMATION PROCEDURE

PREPARATION BEFORE WORK

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

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10 V.

>>
GO TO 2.
CHECK DTC DETECTION
1. Start the engine and wait for at least 2 seconds.
2. Check the DTC.
Is "U0300-00" detected?
YES >>
Proceed to Diagnosis Procedure.
NO-1>>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO-2>>
Confirmation after repair: INSPECTION END

Diagnosis Procedure

Diagnosis Procedure

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.
CONTROL UNIT CHECK
1. Remove one of the control unit replaced.
2. Assemble the old control unit before replacement.
3. Ignition switch ON, and wait for 2 seconds or more.
4. Select “Self Diagnostic Results” in “TRANSMISSION”.
Is "U0300-00" detected again?
YES >>
Ignition switch OFF 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.

U0287-00 Lost Communication (electric Oil Pump)

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U1112-24 Deceleration Request Signal

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