Nissan Rogue (T33) 2021-Present Service Manual: U02bb Can Communication

Nissan Rogue (T33) 2021-Present Service Manual / Engine :: Engine Control System / Kr15ddt :: Dtc/circuit Diagnosis / U02bb Can Communication

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
U02BB 00

Lost comm with EVAP sys purge pump

(Lost comm with EVAP sys purge pump) 		Diagnosis condition Ignition switch ON
Signal (terminal) Signal voltage of LIN communication
Threshold ECM detects LIN communication error
Diagnosis delay time —

POSSIBLE CAUSE

  • Harness or connectors (LIN communication circuit is open or shorted.)

  • EVAP canister electric purge pump

  • ECM

FAIL-SAFE

Not applicable

DTC Confirmation Procedure

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.

>>

GO TO 2.

CHECK DTC PRIORITY

  1. Turn ignition ON and wait at least 10 seconds.

  2. Check DTC.

Is DTC detected?

YES>>

Proceed to DTC 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 HARNESS CONNECTOR FOR HALF-LOCK

  1. Turn ignition switch OFF.

  2. Check the fitting state of EVAP canister electric purge pump harness connector.

    NOTE:

    Secure lock mechanism of connector.

    Push in male connector in direction of the arrow to lock.

    Locked state.

  3. Turn ignition switch ON.

  4. Start the engine and wait at least 1 minute.

Is DTC U02BB detected again?

YES>>

GO TO 2.

NO>>

INSPECTION END

CHECK LIN COMMUNICATION CIRCUIT

  1. Turn ignition switch OFF.

  2. Disconnect ECM harness connector and EVAP canister electric purge pump harness connector.

  3. Check the continuity between ECM harness connector and EVAP canister electric purge pump harness connector.

    ECM EVAP canister electric purge pump Continuity
    Connector Terminal Connector Terminal
    F72 23 F105 4 Existed

  4. Also check harness for short to power and short to ground.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace error-detected parts.

CHECK EVAP CANISTER ELECTRIC PURGE PUMP POWER SUPPLY

  1. Turn ignition switch OFF.

  2. Disconnect EVAP canister electric purge pump harness connector.

  3. Turn ignition switch ON.

  4. Check the voltage between EVAP canister electric purge pump harness connector and ground.

    + −

    Voltage

    (Approx.)
    EVAP canister electric purge pump
    Connector Terminal
    F105 6 Ground Battery voltage

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace error-detected parts.

REPLACE EVAP CANISTER ELECTRIC PURGE PUMP

  1. Replace EVAP canister electric purge pump. Refer to Removal and Installation.

  2. Erase DTC.

  3. Perform DTC confirmation procedure again. Refer to DTC Description.

Is DTC detected again?

YES>>

Replace ECM. Refer to ECM : Removal & Installation.

NO>>

INSPECTION END

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