Nissan Rogue (T33) 2021-Present Service Manual: U1cfa Can Comm Circuit

Nissan Rogue (T33) 2021-Present Service Manual / Engine :: Engine Control System / Kr15ddt :: Dtc/circuit Diagnosis / U1cfa Can Comm Circuit

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
U1CFA 00

Lost communication with USM in secondary ECU

(Lost communication with USM in secondary ECU) 		Diagnosis condition Ignition switch ON
Signal (terminal) CAN communication signal
Threshold ECM is not receiving CAN communication signal other than OBD (emission related diagnosis).
Diagnosis delay time 30 seconds or more

POSSIBLE CAUSE

  • Harness or connectors (CAN communication line is open or shorted)

  • IPDM E/R

FAIL-SAFE

Engine Control System

Not applicable

Stop/Start System

When a DTC is detected, the stop/start indicator lamp blinks slowly and the stop/start system operation is prohibited. When ECM detects error while operating the stop/start system, ECM restarts the engine.

DTC CONFIRMATION PROCEDURE

CHECK DTC PRIORITY

If DTC U1CFA is displayed with DTC P0607, first perform the confirmation procedure (trouble diagnosis) for DTC P0607.

Is DTC P0607 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. Ignition switch OFF and wait at least 10 seconds.

  2. Ignition switch ON.

  3. 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. Ignition switch ON and wait at least 3 seconds.

  2. Check 1st trip DTC.

Is DTC U1CFA detected?

YES>>

Refer to Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

CHECK DTC PRIORITY

If DTC U1CFA is displayed with DTC P0607, first perform the confirmation procedure (trouble diagnosis) for DTC P0607.

Is DTC P0607 detected?

YES>>

Proceed to DTC Description.

NO>>

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

    U1cf9 Can Comm Circuit
    DTC Description DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition U1CF9 00 Lost communication with VDC in secondary ECU (Lost comm...
    U2118 Can Comm Circuit
    DTC Description DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition U2118 87 CAN comm err (Intelligent Key) [CAN comm err (Intellige...

    Other materials:

    P00d2 Ho2s2 Heater
    DTC Description DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition P00D2 00 Heated O2 sensor heater B1 sensor 2 (HO2S heater control circuit range/performance bank 1 sensor 2) Diagnosis condition — Signal (terminal) ...

    U224a-87 Can Comm Err (awd/4wd)
    DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detection condition U224A 87 CAN comm err (AWD/4WD) [Controller area network communication error (AWD/4WD control unit)] 1 Diagnosis condition When ignition switch is ON. ...

    Automatic air conditioner (models without rear control)
    Models with heated steering wheel Models without heated steering wheel Basic information Temperature control dial (driver's side) AUTO button Display screen SYNC button Temperature control dial (passenger's side) ON·OFF button Air recirculation button Fan speed buttons Air flow ...