Nissan Rogue (T33) 2021-Present Service Manual: U2140 Can Comm Circuit

Nissan Rogue (T33) 2021-Present Service Manual / Engine :: Engine Control System / Kr15ddt :: Dtc/circuit Diagnosis / U2140 Can Comm Circuit

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
U2140 87

CAN comm err (ECM)

[CAN communication error (ECM)] 		Diagnosis condition Ignition switch ON
Signal (terminal) CAN communication signal
Threshold eVTC is not receiving CAN communication signal with ECM
Diagnosis delay time 2 seconds or more

POSSIBLE CAUSE

CAN communication line between eVTC and ECM( CAN communication line is open or short)

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

CHECK DTC PRIORITY

If DTC U2140 is displayed with DTC U2384, first perform the confirmation procedure (trouble diagnosis) for DTC U2384.

Is DTC U2384 detected?

YES>>

Proceed to DTC Description.

NO>>

GO TO 2.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

  1. Turn ignition switch OFF and wait at least 10 seconds.

  2. Turn ignition switch ON.

  3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.

>>

GO TO 3.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch ON and wait at least 3 seconds.

  2. Check 1st trip DTC.

Is DTC U2140 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

DTC Diagnosis Procedure

CHECK DTC PRIORITY

If DTC U2140 is displayed with other DTC, first perform the confirmation procedure (trouble diagnosis) for other DTC.

Is applicable DTC detected?

YES>>

Perform diagnosis of applicable. Refer to DTC Index.

NO>>

Perform the trouble diagnosis for CAN communication system. Refer to Trouble Diagnosis Flow Chart.

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