Nissan Murano: Automatic Drive Positioner :: Dtc/circuit Diagnosis / Seat Memory Switch

Nissan Murano (Z52) 2015-2024 Service Manual / Body Interior / Automatic Drive Positioner :: Dtc/circuit Diagnosis / Seat Memory Switch

Component Function Check

DATA MONITOR

CONSULT

  1. Select “MEMORY SW 1”, “MEMORY SW 2” and “SET SW” in “Data Monitor” mode of “AUTO DRIVE POS.”.

  2. Check that the function operates normally according to the following conditions:

    Monitor item Condition Status
    MEMORY SW 1 Memory switch 1 Push ON
    Release OFF
    MEMORY SW 2 Memory switch 2 Push ON
    Release OFF
    SET SW Set switch Push ON
    Release OFF

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Perform diagnosis procedure. Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK SEAT MEMORY SWITCH SIGNAL

  1. Ignition switch OFF.

  2. Disconnect seat memory switch.

  3. Ignition switch ON.

  4. Check voltage between seat memory switch harness connector and ground.

(+) (–)

Voltage

(Approx.)
Seat memory switch
Connector Terminal
D51 8 Ground 5V
2
3

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK MEMORY SWITCH CIRCUIT

  1. Ignition switch OFF.

  2. Disconnect driver seat control unit.

  3. Check continuity between driver seat control unit harness connector and seat memory switch harness connector.

    Driver seat control unit Seat memory switch Continuity
    Connector Terminal Connector Terminal
    B209 11 D51 3 Yes
    21 8
    27 2
  4. Check continuity between driver seat control unit harness connector and ground.

    Driver seat control unit Ground Continuity
    Connector Terminal
    B209 11 No
    21
    27

Is the inspection result normal?

YES>>

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

NO>>

Repair or replace harness.

CHECK MEMORY SWITCH GROUND CIRCUIT

Check continuity between seat memory switch harness connector and ground.

Seat memory switch Ground Continuity
Connector Terminal
D51 1 Yes

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace harness.

CHECK SEAT MEMORY SWITCH

Refer to Component Inspection.

Is the inspection result normal?

YES>>

Check intermittent incident. Refer to Intermittent Incident.

NO>>

Replace seat memory switch. Refer to Removal and Installation.

Component Inspection

CHECK SEAT MEMORY SWITCH

  1. Ignition switch OFF.

  2. Disconnect seat memory switch.

  3. Check continuity between seat memory switch terminals.

    Seat memory switch Condition Continuity
    Terminal
    1 2 Memory switch 1 Push Yes
    Release No
    3 Memory switch 2 Push Yes
    Release No
    8 Set switch Push Yes
    Release No

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace seat memory switch. Refer to Removal and Installation.

    Tilt Switch

    Component Function Check DATA MONITOR CONSULT Select “TILT SW-UP”, “TILT SW-DOWN” in “Data Monitor” mode of “AUTO DRIVE POS.”. Check that the function operates normally according to the following conditions: Monitor item Condition Status TILT SW-UP Tilt switch (up) Operate ON Release OFF TILT SW-DOWN Tilt switch (down) Operate ON Release OFF Is the inspection result normal? YES>> Inspection End...

    Main Power Window and Door Mirror Switch. Select Switch

    Component Function Check DATA MONITOR CONSULT Select “MIR CHNG SW-R” and “MIR CHNG SW-L” in “Data Monitor” mode of “AUTO DRIVE POS.”...

    Other information:

    Nissan Murano (Z52) 2015-2024 Service Manual: I-Li


    System Description SYSTEM DIAGRAMADAS CONTROL UNIT INPUT/OUTPUT SIGNAL ITEMInput Signal Item Transmit unit Signal name Description ECM CAN communication Brake pedal position switch signal Receives Brake pedal position switch state Accelerator pedal position signal Receives accelerator pedal position (angle) Stop lamp switch signal Receives stop lamp switch state Engine speed signal Receives engine speed TCM CAN communication Input speed signal Receives the number of revolutions of input shaft Current gear position signal Receives a current gear position Shift position signal Receives a selector lever position Output shaft revolution signal Receives the number of revolutions of output shaft ABS actuator and electric unit (control unit) CAN communication ABS malfunction signal Receives a malfunction state of ABS ABS operation signal Receives an operational state of ABS TCS malfunction signal Receives a malfunction state of TCS TCS operation signal Receives an operational state of TCS VDC OFF switch signal Receives an ON/OFF state of VDC VDC malfunction signal Receives a malfunction state of VDC VDC operation signal Receives an operational state of VDC Nissan Murano Vehicle speed signal (ABS) Receives wheel speeds of four wheels Yaw rate signal Receives yaw rate acting on the Nissan Murano vehicle Side G sensor signal Receives lateral G acting on the Nissan Murano vehicle Combination meter CAN communication Parking brake switch signal Receives an operational state of the parking brake System selection signal Receives a selection state of each item in "Driver Assistance" BCM CAN communication Turn indicator signal Receives an operational state of the turn signal lamp and the hazard lamp Steering angle sensor CAN communication Steering angle sensor malfunction signal Receives a malfunction state of steering angle sensor Steering angle sensor signal Receives the number of revolutions, turning direction of the steering wheel Steering angle speed signal Receives the turning angle speed of the steering wheel Lane intervention switch Lane intervention switch signal Receives an ON/OFF state of the lane intervention switch Lane camera unit ITS communication Detected lane condition signal Receives detection results of lane marker Output Signal Item Reception unit Signal name Description ABS actuator and electric unit (control unit) CAN communication Target yaw moment signal Transmits a target yaw moment signal to generate yaw moment to the Nissan Murano vehicle Combination meter CAN communication Intelligent Lane Intervention ON indicator lamp signal Transmits an Intelligent Lane Intervention ON indicator lamp signal to turn ON the Intelligent Lane Intervention ON indicator lamp Lane departure warning lamp signal Transmits an lane departure warning lamp signal to turn ON the lane departure warning lamp Lane camera unit ITS communication Nissan Murano Vehicle speed signal Transmits a vehicle speed calculated by the ADAS control unit Turn indicator signal Transmits a turn indicator signal received from BCM Steering assist system ON indicator Steering assist system ON indicator signal Turns ON the steering assist system ON indicator Intelligent Lane Intervention system ON indicator Intelligent Lane Intervention system ON indicator signal Turns ON the Intelligent Lane Intervention system ON indicator Warning system buzzer Warning buzzer signal Activates warning system buzzer...

    Nissan Murano (Z52) 2015-2024 Service Manual: B26f7 Bcm


    DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC Detection Condition B26F7 BCM (Body control module) Diagnosis condition When ignition switch is ON. Signal (terminal) — Threshold Inside key antenna output circuit in BCM is malfunctioning Diagnosis delay time — POSSIBLE CAUSEBCMFAIL-SAFE— DTC Confirmation Procedure PERFORM DTC CONFIRMATION PROCEDURE CONSULT Press door request switch...

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