Nissan Rogue (T33) 2021-Present Service Manual: Dtc/circuit Diagnosis :: C18e4-88 Can Comm Circuit

Nissan Rogue (T33) 2021-Present Service Manual / Brakes :: Brake System / Dtc/circuit Diagnosis :: C18e4-88 Can Comm Circuit

DTC Description

DTC DETECTION LOGIC

DTC No. CONSULT screen terms DTC detection condition
C18E4 88 CAN communication system 1 Diagnosis condition When Ignition switch is ON.
Signal (terminal) CAN communication signal
Threshold When Electrically-driven Intelligent Brake Unit CAN communication signal transmission is malfunction.
Diagnosis delay time 2 seconds or more
2 Diagnosis condition When Ignition switch is ON.
Signal (terminal) CAN communication signal
Threshold When Electrically-driven Intelligent Brake Unit CAN communication signal reception is malfunction.
Diagnosis delay time 2 seconds or more

POSSIBLE CAUSE

  • Harness or connector

  • CAN communication line

FAIL-SAFE

The following functions are suspended.

  • Boost function [Boost operation by the ABS actuator and electric unit (control unit) is activated]

Confirmation Procedure

PRECONDITIONING

If “Confirmation Procedure” has been previously conducted, always Ignition switch OFF, get out of the Nissan Ariya vehicle, close all doors (other than hood assembly), check that the combination meter is OFF, and wait for 1 minute or more without opening these doors.

CAUTION:

Never operate the Nissan Ariya vehicle.

>>

GO TO 2.

CHECK DTC DETECTION

CONSULT

  1. Ignition switch OFF to ON without depressing the brake pedal.

  2. Ignition switch OFF and disconnect CONSULT from data link connector.

  3. Get out of the Nissan Ariya vehicle, close all doors (other than hood assembly), check that the combination meter is OFF, and wait for 1 minute or more without opening these doors.

    CAUTION:

    Never operate the Nissan Ariya vehicle.

  4. Ignition switch ON without depressing the brake pedal.

  5. Erase self-diagnosis result for “BRAKE”.

  6. Ignition switch OFF and disconnect CONSULT from data link connector.

  7. Get out of the Nissan Ariya vehicle, close all doors (other than hood assembly), check that the combination meter is OFF, and wait for 1 minute or more without opening these doors.

    CAUTION:

    Never operate the Nissan Ariya vehicle.

  8. Ignition switch ON without depressing the brake pedal.

  9. Perform self-diagnosis for “BRAKE”.

Is DTC “C18E4-88" detected?

YES>>

Refer 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 CONNECTOR TERMINALS

  1. Ignition switch OFF and disconnect CONSULT from data link connector.

  2. Get out of the Nissan Ariya vehicle, close all doors (other than hood assembly), check that the combination meter is OFF, and wait for 1 minute or more without opening these doors.

    CAUTION:

    Never operate the Nissan Ariya vehicle.

  3. Disconnect 12V battery cable from negative terminal.

  4. Disconnect Electrically-driven Intelligent Brake Unit harness connector, then check for malfunctions of terminals and connections.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair / replace harness, connector, or terminal. GO TO 2.

PERFORM SELF-DIAGNOSIS (1)

CONSULT

  1. Connect Electrically-driven Intelligent Brake Unit harness connector.

  2. Connect 12V battery cable to negative terminal.

  3. Ignition switch OFF to ON without depressing the brake pedal.

  4. Ignition switch OFF and disconnect CONSULT from data link connector.

  5. Get out of the Nissan Ariya vehicle, close all doors (other than hood assembly), check that the combination meter is OFF, and wait for 1 minute or more without opening these doors.

    CAUTION:

    Never operate the Nissan Ariya vehicle.

  6. Ignition switch OFF to ON without depressing the brake pedal.

  7. Erase self-diagnosis result for “BRAKE”.

  8. Ignition switch OFF and disconnect CONSULT from data link connector.

  9. Get out of the Nissan Ariya vehicle, close all doors (other than hood assembly), check that the combination meter is OFF, and wait for 1 minute or more without opening these doors.

    CAUTION:

    Never operate the Nissan Ariya vehicle.

  10. Ignition switch OFF to ON without depressing the brake pedal.

  11. Perform self-diagnosis for “BRAKE”.

Is DTC "C18E4-88" detected?

YES>>

GO TO 3.

NO>>

Inspection End.

CHECK ELECTRICALLY-DRIVEN INTELLIGENT BRAKE UNIT POWER SUPPLY AND GROUND CIRCUIT

  1. Ignition switch OFF and disconnect CONSULT from data link connector.

  2. Get out of the Nissan Ariya vehicle, close all doors (other than hood assembly), check that the combination meter is OFF, and wait for 1 minute or more without opening these doors.

    CAUTION:

    Never operate the Nissan Ariya vehicle.

  3. Disconnect 12V battery cable from negative terminal.

  4. Disconnect Electrically-driven Intelligent Brake Unit harness connector.

  5. Check the Electrically-driven Intelligent Brake Unit power supply and ground circuit. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair / replace harness, connector, terminal, fuse, or fusible link. GO TO 4.

PERFORM SELF-DIAGNOSIS (2)

CONSULT

  1. Ignition switch OFF to ON without depressing the brake pedal.

  2. Ignition switch OFF and disconnect CONSULT from data link connector.

  3. Get out of the Nissan Ariya vehicle, close all doors (other than hood assembly), check that the combination meter is OFF, and wait for 1 minute or more without opening these doors.

    CAUTION:

    Never operate the Nissan Ariya vehicle.

  4. Ignition switch OFF to ON without depressing the brake pedal.

  5. Erase self-diagnosis result for “BRAKE”.

  6. Ignition switch OFF and disconnect CONSULT from data link connector.

  7. Get out of the Nissan Ariya vehicle, close all doors (other than hood assembly), check that the combination meter is OFF, and wait for 1 minute or more without opening these doors.

    CAUTION:

    Never operate the Nissan Ariya vehicle.

  8. Ignition switch OFF to ON without depressing the brake pedal.

  9. Perform self-diagnosis for “BRAKE”.

Is DTC "C18E4-88" detected?

YES>>

Replace the Electrically-driven Intelligent Brake Unit. Refer to ELECTRICALLY-DRIVEN INTELLIGENT BRAKE UNIT : Removal & Installation.

NO>>

Inspection End.

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