Nissan Murano: Power Window Serial Link / Main Power Window and Door Lock/unlock Switch

Nissan Murano (Z52) 2015-2024 Service Manual / Body Exterior, Doors, Roof & Vehicle Security / Power Window Control System :: Dtc/circuit Diagnosis / Power Window Serial Link / Main Power Window and Door Lock/unlock Switch

Component Function Check

CHECK POWER WINDOW SWITCH OUTPUT SIGNAL

CONSULT

Select “CDL LOCK SW ” or “CDL UNLOCK SW” in “Data Monitor” mode of “BCM(DOOR LOCK)”. Refer to CONSULT Function (BCM - DOOR LOCK).

Monitor item Condition
CDL LOCK SW LOCK : ON
UNLOCK : OFF
CDL UNLOCK SW LOCK : OFF
UNLOCK : ON

Is the inspection result normal?

YES>>

Power window serial link is OK.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and BCM transmit and receive the signal by power window serial link.

The signal mentioned below is transmitted from BCM to main power window and door lock/unlock switch and power window and door lock/unlock switch RH:

  • Keyless power window down signal

The signal mentioned below is transmitted from main power window and door lock/unlock switch to power window and door lock/unlock switch RH:

  • Front door window RH operation signal

  • Power window lock switch signal

  • Retained power operation signal

Power Window Serial Link Check

CHECK POWER WINDOW SWITCH OUTPUT SIGNAL

  1. Remove key and close front door LH and RH.

  2. Check signal between BCM connector and ground with oscilloscope when door lock and unlock switch (LH and RH) is turned to “LOCK” or “UNLOCK”.

  3. Check that signals which are shown in the figure below can be detected during 10 second just after door lock and unlock switch (LH and RH) is turned to “LOCK” or “UNLOCK”.

    (+) (–)

    Signal

    (Reference value)
    BCM
    Connector Terminal
    M19 54 Ground

Is the inspection result normal?

YES>>

Power window serial link is OK.

NO>>

GO TO 2.

CHECK POWER WINDOW SERIAL LINK CIRCUIT

  1. Ignition switch OFF.

  2. Disconnect BCM connector and main power window and door lock/unlock switch harness connector.

  3. Check continuity between BCM connector and main power window and door lock/unlock switch connector.

    BCM Main power window and door lock/unlock switch Continuity
    Connector Terminal Connector Terminal
    M19 54 D7 11 Yes
  4. Check continuity between BCM connector and ground.

    BCM Ground Continuity
    Connector Terminal
    M19 54 No

Is the inspection result normal?

YES>>

Replace main power window and door lock/unlock switch. Refer to Removal and Installation.

NO>>

Repair or replace harness or connectors.

    Power Window Serial Link

    ..

    Power Window and Door Lock/unlock Switch Rh

    Description Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and BCM transmit and receive the signal by power window serial link...

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