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Nissan Sentra B18 (2020-2025) Service Manual: U1112-24 Deceleration Request Signal

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

U1112

24

DECELERATION REQUEST SIGNAL

(Deceleration Request Signal)

1

Diagnosis condition

Accelerator pedal opening ≥ 4 deg

Signal

CAN communication signal

Threshold

TCM is unable to receive the CAN communications signal from chassis control module

Diagnosis delay time

2 seconds

2

Diagnosis condition

Nissan Sentra Vehicle speed ≤ 10 km/h (6 MPH)

Signal

CAN communication signal

Threshold

TCM is unable to receive the CAN communications signal from chassis control module

Diagnosis delay time

10 seconds

POSSIBLE CAUSE

  • Harness or connector (CAN communication line is error)

  • Chassis control module

  • TCM

FAIL-SAFE

Not changed from normal driving

DTC CONFIRMATION PROCEDURE

  1. 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.

  2. CHECK DTC DETECTION

    With CONSULT

    1. Start the engine and wait for at least 10 seconds.

    2. Drive the Nissan Sentra vehicle at 10 km/h (6 MPH) for at least 10 seconds.

    3. Stop the vehicle.

    4. Check the DTC.

    Is "U1112-24" detected?

    YES >>

    Go to Diagnosis Procedure.

    NO >>

    INSPECTION END

Diagnosis Procedure

Diagnosis Procedure

For the diagnosis procedure, refer to Trouble Diagnosis Flow Chart.

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