Nissan Murano: Door & Lock :: Dtc/circuit Diagnosis / B2426 Spindle Sensor Lh

Nissan Murano (Z52) 2015-2024 Service Manual / Body Exterior, Doors, Roof & Vehicle Security / Door & Lock :: Dtc/circuit Diagnosis / B2426 Spindle Sensor Lh

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen items

(Trouble diagnosis content) 		DTC detecting condition
B2426–11

SPINDLE SENSOR LH

(Spindle sensor left hand) 		Diagnosis condition All times
Signal (terminal) Encoder LH power supply (automatic back door control module connector terminal: 19)
Threshold Short circuit is detected in encoder power supply output circuit inside automatic back door control module. B2427-11 is detected simultaneously because encoder sensor RH receives power supply from the same power supply circuit as LH (circuit inside automatic back door control module).
Diagnosis delay time –
B2426–23

SPINDLE SENSOR LH

(Spindle sensor left hand) 		Diagnosis condition All times
Signal (terminal) Encoder LH A signal, encoder LH B signal (automatic back door control module connector terminal: 6, 7)
Threshold Either pulse signal A value or pulse signal B value is stuck to OFF side during automatic open/close operation.
Diagnosis delay time –
B2426–24

SPINDLE SENSOR LH

(Spindle sensor left hand) 		Diagnosis condition All times
Signal (terminal) Encoder LH A signal, encoder LH B signal (automatic back door control module connector terminal: 6, 7)
Threshold Either pulse signal A value or pulse signal B value is stuck to ON side during automatic open/close operation.
Diagnosis delay time –
B2426–29

SPINDLE SENSOR LH

(Spindle sensor left hand) 		Diagnosis condition All times
Signal (terminal) Encoder LH A signal, encoder LH B signal (automatic back door control module connector terminal: 6, 7)
Threshold Automatic back door control module detects the abnormal pulse values of encoder LH.
Diagnosis delay time –
B2426–32

SPINDLE SENSOR LH

(Spindle sensor left hand) 		Diagnosis condition All times
Signal (terminal) Encoder LH A signal, encoder LH B signal (automatic back door control module connector terminal: 6, 7)
Threshold Automatic back door control module detects spindle unit failure.
Diagnosis delay time –

POSSIBLE CAUSE

  • Improper installation of back door assembly

  • Calibration of automatic back door position information

  • Back door mechanism

  • Encoder (spindle unit LH)

  • Harness or connectors (encoder circuit is open or shorted)

  • Automatic back door control module

FAIL-SAFE

Inhibit automatic back door system auto open/close function

DTC Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

  1. Ignition switch ON.

  2. Operate automatic back door.

  3. Select “Self Diagnostic Result” mode of “AUTO BACK DOOR”.

Is DTC detected?

YES>>

DTC “B2426-11”: Refer to DTC Diagnosis Procedure (B2426-11).

YES>>

DTC “B2426-23”: Refer to DTC Diagnosis Procedure (B2426-23).

YES>>

DTC “B2426-24”: Refer to DTC Diagnosis Procedure (B2426-24).

YES>>

DTC “B2426-29” or DTC “B2426-32”: Refer to DTC Diagnosis Procedure (B2426-29 or B2426-32).

NO>>

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

NO>>

Confirmation after repair: Inspection End.

Diagnosis Procedure (B2426-11)

ERASE DTC

CONSULT

  1. Ignition switch ON.

  2. Select “Self Diagnostic Result” mode of “AUTO BACK DOOR”.

  3. Erase DTC, and then repeat “DTC CONFIRMATION PROCEDURE”. Refer to DTC Confirmation Procedure.

Is DTC “B2426-11” detected?

YES>>

GO TO 2.

NO>>

Check intermittent incident. Refer to Intermittent Incident.

CHECK SPINDLE MOTOR CIRCUIT

  1. Ignition switch OFF.

  2. Disconnect automatic back door control module and spindle unit connector.

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

    (+) (–)

    Voltage

    (Approx.)
    Automatic back door control module
    Connector Terminal
    B55 6 Ground 0 V
    7

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace harness.

REPLACE SPINDLE UNIT LH

CONSULT

  1. Ignition switch OFF.

  2. Replace spindle unit LH. Refer to Removal and Installation.

  3. Ignition switch ON.

  4. Select “Self Diagnostic Result” mode of “AUTO BACK DOOR”.

  5. Erase DTC, and then repeat “DTC CONFIRMATION PROCEDURE”. Refer to DTC Confirmation Procedure.

Is DTC “B2426-11” detected?

YES>>

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

NO>>

Inspection End.

Diagnosis Procedure (B2426-23)

CHECK ENCODER POWER SUPPLY

  1. Ignition switch OFF.

  2. Disconnect spindle unit LH connector.

  3. Check voltage between spindle unit LH harness connector and ground.

    (+) (–)

    Voltage

    (Approx.)
    Spindle unit LH
    Connector Terminal
    B70 6 Ground Battery voltage

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK ENCODER POWER SUPPLY CIRCUIT

  1. Disconnect automatic back door control module connector.

  2. Check continuity between automatic back door control module harness connector and spindle unit LH harness connector.

    Automatic back door control module Spindle unit LH Continuity
    Connector Terminal Connector Terminal
    B55 19 B70 6 Yes

  3. Check continuity between automatic back door control module harness connector and ground.

    Automatic back door control module Ground Continuity
    Connector Terminal
    B55 19 No

Is the inspection result normal?

YES>>

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

NO>>

Repair or replace harness.

CHECK ENCODER GROUND CIRCUIT

  1. Disconnect automatic back door control module connector.

  2. Check continuity between automatic back door control module harness connector and spindle unit LH harness connector.

    Automatic back door control module Spindle unit LH Continuity
    Connector Terminal Connector Terminal
    B55 21 B70 3 Yes

  3. Check continuity between automatic back door control module harness connector and ground.

    Automatic back door control module Ground Continuity
    Connector Terminal
    B55 21 No

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace harness.

CHECK ENCODER COMMUNICATION CIRCUIT

  1. Check continuity between automatic back door control module harness connector and spindle unit LH harness connector.

    Automatic back door control module Spindle unit LH Continuity
    Connector Terminal Connector Terminal
    B55 6 B70 7 Yes
    7 10

  2. Check continuity between automatic back door control module harness connector and ground.

    Automatic back door control module Ground Continuity
    Connector Terminal
    B55 6 No
    7

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair or replace harness.

ERASE DTC

CONSULT

  1. Connect automatic back door control module and spindle unit LH connector.

  2. Ignition switch ON.

  3. Select “Self Diagnostic Result” mode of “AUTO BACK DOOR”.

  4. Erase DTC, and then repeat “DTC CONFIRMATION PROCEDURE”. Refer to DTC Confirmation Procedure.

Is DTC “B2426-23” detected?

YES>>

GO TO 6.

NO>>

Inspection End.

REPLACE SPINDLE UNIT

CONSULT

  1. Ignition switch OFF.

  2. Replace spindle unit LH. Refer to Removal and Installation.

  3. Ignition switch ON.

  4. Select “Self Diagnostic Result” mode of “AUTO BACK DOOR”.

  5. Erase DTC, and then repeat “DTC CONFIRMATION PROCEDURE”. Refer to DTC Confirmation Procedure.

Is DTC “B2426-23” detected?

YES>>

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

NO>>

Inspection End.

Diagnosis Procedure (B2426-24)

CHECK ENCODER COMMUNICATION CIRCUIT

  1. Ignition switch OFF.

  2. Disconnect automatic back door control module and spindle unit LH connector.

  3. Check continuity between automatic back door control module harness connector and ground.

    (+) (-)

    Voltage

    (Approx.)
    Automatic back door control module
    Connector Terminal
    B55 6 Ground 0 V
    7

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace harness.

ERASE DTC

CONSULT

  1. Connect automatic back door control module and spindle unit LH connector.

  2. Ignition switch ON.

  3. Select “Self Diagnostic Result” mode of “AUTO BACK DOOR”.

  4. Erase DTC, and then repeat “DTC CONFIRMATION PROCEDURE”. Refer to DTC Confirmation Procedure.

Is DTC “B2426-24” detected?

YES>>

GO TO 3.

NO>>

Inspection End.

REPLACE SPINDLE UNIT

CONSULT

  1. Ignition switch OFF.

  2. Replace spindle unit LH. Refer to Removal and Installation.

  3. Ignition switch ON.

  4. Select “Self Diagnostic Result” mode of “AUTO BACK DOOR”.

  5. Erase DTC, and then repeat “DTC CONFIRMATION PROCEDURE”. Refer to DTC Confirmation Procedure.

Is DTC “B2426-24” detected?

YES>>

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

NO>>

Inspection End.

Diagnosis Procedure (B2426-29 or B2426-32)

CHECK DTC CONDITION

CONSULT

  1. Ignition switch ON.

  2. Move then back door manually.

  3. Select “Self Diagnostic Result” mode of “AUTO BACK DOOR”.

What is the display history of DTC “B2426-29”or DTC “B2426-32”?

“CRNT”>>

GO TO 3.

“PAST”>>

GO TO 2.

ERASE DTC

CONSULT

Erase DTC, and then repeat “DTC CONFIRMATION PROCEDURE”. Refer to DTC Confirmation Procedure.

Is DTC “B2426-29” or DTC “B2426-32”detected?

YES>>

GO TO 3.

NO>>

Inspection End.

REPLACE SPINDLE UNIT AND ERASE DTC

CONSULT

  1. Ignition switch OFF.

  2. Replace spindle unit LH. Refer to Removal and Installation.

  3. Perform initialization setting of automatic back door position information.

    Refer to Work Procedure.

  4. Ignition switch ON.

  5. Select “Self Diagnostic Result” mode of “AUTO BACK DOOR”.

  6. Erase DTC, and then repeat “DTC CONFIRMATION PROCEDURE”. Refer to DTC Confirmation Procedure.

Is DTC “B2426-29” or DTC “B2426-32”detected?

YES>>

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

NO>>

Inspection End.

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