Nissan Rogue (T33) 2021-Present Service Manual: Dtc/circuit Diagnosis :: B2921-A2 Driver Seat Control Unit

Nissan Rogue (T33) 2021-Present Service Manual / Body Interior :: Automatic Drive Positioner / Dtc/circuit Diagnosis :: B2921-A2 Driver Seat Control Unit

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen items

(Trouble diagnosis content) 		DTC detection condition
B2921-A2

Driver seat control unit

(Driver seat control unit) 		Diagnosis condition The power consumption control of driver seat control unit is in wake-up state
Signal (terminal) Battery power supply (terminal #48)
Threshold 8 V or less
Diagnosis delay time 1 second or more

POSSIBLE CAUSE

  • Fuse

  • Driver seat control unit battery power supply harness is open or shorted

  • Driver seat control unit

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

  1. Ignition switch ON.

  2. Select “Self diagnosis result” mode of “DRIVER SEAT”.

Is DTC detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO>>

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

NO>>

Confirmation after repair: Inspection End.

DTC Diagnosis Procedure

CHECK FUSE

  1. Ignition switch OFF.

  2. Check that the following fuse is not blown (open):

    Signal name Fuse No. Capacity
    Battery power supply 54 20 A

Is the fuse blown (open)?

YES>>

Replace the blown (open) fuse after repairing the affected circuit.

NO>>

GO TO 2.

CHECK BATTERY POWER SUPPLY VOLTAGE

  1. Disconnect driver seat control unit connector.

  2. Check voltage between driver seat control unit harness connector and ground.

    (+) (—)

    Voltage

    (Approx.)
    Driver seat control unit
    Connector Terminal
    B214 48 Ground Battery voltage

Is the inspection result normal?

YES>>

Replace driver seat control unit. Refer to Removal and Installation.

NO>>

Repair the driver seat control unit battery power supply circuit.

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