Nissan Murano: Security Control System :: Dtc/circuit Diagnosis / B2556 Push-Btn Ign Sw

Nissan Murano (Z52) 2015-2024 Service Manual / Body Exterior, Doors, Roof & Vehicle Security / Security Control System :: Dtc/circuit Diagnosis / B2556 Push-Btn Ign Sw

DTC Description

DTC DETECTION LOGIC

DTC No. CONSULT screen terms (Trouble diagnosis content) DTC Detection Condition
B2556

PUSH-BTN IGN SW

(Push-button ignition switch)
Diagnosis condition When ignition switch ON.
Signal (terminal)
Threshold BCM detects the ignition switch stuck at ON for 100 seconds or more
Diagnosis delay time

POSSIBLE CAUSE

  • Push-button ignition switch

  • BCM

  • Harness or connector

    (Ignition switch circuit is shorted.)

FAIL-SAFE

DTC Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

  1. Ignition switch under the following condition:

    Brake pedal: Not depressed.

  2. Release ignition switch and wait 100 seconds or more.

  3. Select “Self Diagnostic Result” mode of “BCM”.

  4. Check DTC.

Is DTC detected?

YES>>

Refer to Diagnosis Procedure.

NO>>

Inspection End.

Diagnosis Procedure

CHECK PUSH-BUTTON IGNITION SWITCH INPUT SIGNAL

  1. Ignition switch OFF.

  2. Disconnect push-button ignition switch connector.

  3. Check voltage between push-button ignition switch harness connector and ground.

    (+) (–)

    Voltage

    (Approx.)
    Push-button ignition switch
    Connector Terminal
    M208 8 Ground Battery voltage

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

GO TO 2.

CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT

  1. Disconnect BCM connector and IPDM E/R connector E119.

  2. Check continuity between push-button ignition switch harness connector and BCM harness connector.

    Push-button ignition switch BCM Continuity
    Connector Terminal Connector Terminal
    M208 8 M18 1 Yes
  3. Check continuity between push-button ignition switch harness connector and ground.

    Push-button ignition switch Ground Continuity
    Connector Terminal
    M208 8 No

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace harness.

REPLACE BCM

  1. Replace BCM. Refer to Removal and Installation.

  2. Perform initialization of BCM and registration of all Intelligent Keys. Refer to Work Procedure.

>>

Inspection End.

CHECK PUSH-BUTTON IGNITION SWITCH

Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Replace push-button ignition switch. Refer to Removal and Installation.

CHECK INTERMITTENT INCIDENT

Refer to Intermittent Incident.

>>

Inspection End.

Component Inspection

CHECK PUSH-BUTTON IGNITION SWITCH

  1. Ignition switch OFF.

  2. Disconnect push-button ignition switch connector.

  3. Check continuity between push-button ignition switch terminals.

    Push-button ignition switch Condition Continuity
    Terminal
    4 8 Push-button ignition switch Pressed Yes
    Not pressed No

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace push-button ignition switch. Refer to Removal and Installation.

    B2555 Stop Lamp

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    B2557 Vehicle Speed

    DTC Description DTC DETECTION LOGICNOTE: If DTC B2557 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to DTC Description...

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    Categories

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    Nissan Murano. Vehicle security system

    Your vehicle has two types of security systems:

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