Nissan Rogue (T33) 2021-Present Service Manual: Dtc/circuit Diagnosis :: B2409-12 Half Latch Switch

Nissan Rogue (T33) 2021-Present Service Manual / Body Exterior, Doors, Roof & Vehicle Security :: Door & Lock / Dtc/circuit Diagnosis :: B2409-12 Half Latch Switch

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen items

(Trouble diagnosis content) 		DTC Detection Condition
B2409-12

Half latch switch

(Half latch switch) 		Diagnosis condition When the door unlock operates while ignition switch is OFF (auto ACC OFF status) or the battery terminal is removed
Signal (terminal) Half latch switch signal
Threshold Automatic back door control unit detect power short of half latch switch circuit
Diagnosis delay time 1 second or less

POSSIBLE CAUSE

  • Harness or connector (half latch switch circuit is power short)

  • Automatic back door control unit

  • Back door lock assembly (half latch switch)

FAIL-SAFE

Inhibit automatic back door system [only operate back door closure function (open function)]

DTC CONFIRMATION PROCEDURE

DTC CONFIRMATION

CONSULT

  1. When the door unlock operates by Intelligent Key or door request switch while ignition switch is OFF (auto ACC OFF status).

  2. Select “Self diagnosis result” mode of “AUTOMATIC BACK DOOR”.

Is DTC 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 HALF LATCH SWITCH INPUT SIGNAL

Check voltage between automatic back door control unit harness connector and ground.

(+) (–) Condition

Voltage

(Approx.)
Automatic back door control unit
Connector Terminal
B55 10 Ground Back door Open 0 – 1 V
Fully closed/ half latch Battery voltage

Is the inspection result normal?

YES>>

Replace automatic back door control unit. Refer to Removal and Installation.

NO>>

GO TO 2.

CHECK HALF LATCH SWITCH CIRCUIT

  1. Disconnect automatic back door control unit connector and back door lock assembly connector.

  2. Check voltage between automatic back door control unit harness connector and ground.

    Automatic back door control unit —

    Voltage

    (Approx.)
    Connector Terminal
    B55 10 Ground 0 V

Is the inspection result normal?

YES>>

Replace back door lock assembly. Refer to Removal and Installation.

NO>>

Repair or replace harness.

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