Nissan Murano: Door & Lock :: Dtc/circuit Diagnosis / B242a Clsr Condition

Nissan Murano (Z52) 2015-2024 Service Manual / Body Exterior, Doors, Roof & Vehicle Security / Door & Lock :: Dtc/circuit Diagnosis / B242a Clsr Condition

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen items

(Trouble diagnosis content) 		DTC detecting condition
B242A-01

CLSR CONDITION

(Closure condition) 		Diagnosis condition All times
Signal (terminal) Open switch signal, close switch signal (automatic back door control module connector terminal: 5, 11)
Threshold Automatic back door control module detects open switch and close switch ON, when the back door closure motor starts to operate.
Diagnosis delay time –
B242A-11

CLSR CONDITION

(Closure condition) 		Diagnosis condition All times
Signal (terminal) Back door closure motor (open) signal, back door closure motor (close) signal (automatic back door control module connector terminal: 31, 38)
Threshold One of the closure motor open/close circuits is shorted to ground: current flowing through one of circuits is higher than a threshold (18 A for 30 ms).
Diagnosis delay time –
B242A-12

CLSR CONDITION

(Closure condition) 		Diagnosis condition All times
Signal (terminal) Back door closure motor (open) signal, back door closure motor (close) signal (automatic back door control module connector terminal: 31, 38)
Threshold One of the closure motor open/close circuits is shorted to battery voltage: the voltage of a circuits is above a threshold (3 V or more) when that specific terminal is inactive.
Diagnosis delay time –
B242A-13

CLSR CONDITION

(Closure condition) 		Diagnosis condition All times
Signal (terminal) Back door closure motor (open) signal, back door closure motor (close) signal (automatic back door control module connector terminal: 31, 38)
Threshold One of the closure motor open/close circuits is open: current flowing through one of circuits is lower than a threshold (2.4 A). This can only be detected when that specific terminal is activated (motor rotates in a specific direction)
Diagnosis delay time –
B242A-63

CLSR CONDITION

(Closure condition) 		Diagnosis condition All times
Signal (terminal) Back door closure motor (open) signal, back door closure motor (close) signal (automatic back door control module connector terminal: 31, 38)
Threshold When the automatic back door control module and closure motor operate in the same direction for 35 times or more continuously
Diagnosis delay time –

POSSIBLE CAUSE

  • Entry of foreign materials to back door lock assembly

  • Back door mechanism

  • Close switch

  • Open switch

  • Harness or connectors (open or shorted)

  • Automatic back door control module

  • Closure motor (continuous action)

FAIL-SAFE

Inhibit automatic back door system back door auto closure function

DTC Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

  1. Ignition switch ON.

  2. Operate back door auto closure operation.

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

Is DTC detected?

YES>>

DTC “B242A-01”: Refer to DTC Diagnosis Procedure (B242A-01).

YES>>

DTC “B242A-11”: Refer to DTC Diagnosis Procedure (B242A-11).

YES>>

DTC “B242A-12”: Refer to DTC Diagnosis Procedure (B242A-12).

YES>>

DTC “B242A-13”: Refer to DTC Diagnosis Procedure (B242A-13).

YES>>

DTC “B242A-63”: Refer to DTC Diagnosis Procedure (B242A-63).

NO>>

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

NO>>

Confirmation after repair: Inspection End.

Diagnosis Procedure (B242A-01)

CHECK FOR FOREIGN MATERIALS IN BACK DOOR LOCK ASSEMBLY

Check for entry of foreign materials in back door lock assembly.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

REMOVE FOREIGN MATERIALS AND ERASE DTC

CONSULT

  1. Remove foreign materials.

  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 “B242A-01” detected?

YES>>

GO TO 3.

NO>>

Inspection End

CHECK BACK DOOR LOCK OPEN/CLOSE OPERATION

Manually check open and close operation of back door lock.

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

GO TO 4.

CHECK INSTALLATION OF BACK DOOR LOCK ASSEMBLY

Check that back door lock assembly is installed normally. Refer to Removal and Installation.

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

GO TO 5.

ADJUST OF BACK DOOR LOCK ASSEMBLY INSTALLATION AND ERASE DTC

CONSULT

  1. Ignition switch OFF.

  2. Adjust of back door lock assembly 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 “B242A-01” detected?

YES>>

GO TO 6.

NO>>

Inspection End.

REPLACE BACK DOOR LOCK ASSEMBLY AND ERASE DTC-1

CONSULT

  1. Ignition switch OFF.

  2. Replace back door lock assembly. 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 “B242A-01” detected?

YES>>

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

NO>>

Inspection End.

CHECK OPEN SWITCH AND CLOSE SWITCH MONITOR ITEM

CONSULT

  1. Select “OPEN SW” and “CLOSE SW” in “Data Monitor” mode of “AUTO BACK DOOR”.

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

Monitor item Condition Status
OPEN SW Back door Half latch/fully closed OFF
Open ON
CLOSE SW Back door Half latch/fully closed OFF
Applied ON

Is the inspection result normal?

YES>>

GO TO 12.

NO>>

GO TO 8.

CHECK OPEN SWITCH OR CLOSE SWITCH INPUT SIGNAL

  1. Ignition switch OFF.

  2. Disconnect back door lock assembly connector.

  3. Check voltage between back door lock assembly harness connector and ground.

    (+) (–)

    Voltage

    (Approx.)
    Back door lock assembly
    Connector Terminal
    D557 4 Ground Battery voltage
    5

Is the inspection result normal?

YES>>

GO TO 10.

NO>>

GO TO 9.

CHECK OPEN SWITCH OR CLOSE SWITCH CIRCUIT

  1. Disconnect automatic back door control module connector.

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

    Automatic back door control module Back door lock assembly Continuity
    Connector Terminal Connector Terminal
    B55 5 D557 4 Yes
    11 5

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

    Automatic back door control module Ground Continuity
    Connector Terminal
    B55 5 No
    11

Is the inspection result normal?

YES>>

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

NO>>

Repair or replace harness.

CHECK HALF LATCH SWITCH GROUND CIRCUIT

  1. Disconnect back door lock assembly connector.

  2. Check continuity between back door lock assembly harness connector and ground.

    Back door lock assembly Ground Continuity
    Connector Terminal
    B557 8 Yes

Is the inspection result normal?

YES>>

GO TO 11.

NO>>

Repair or replace harness.

REPLACE BACK DOOR LOCK ASSEMBLY AND ERASE DTC

CONSULT

  1. Replace back door lock assembly. Refer to Removal and Installation.

  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 “B242A-01” detected?

YES>>

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

NO>>

Inspection End.

ERASE DTC

CONSULT

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

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

Is DTC “B242A-01” detected?

YES>>

GO TO 13.

NO>>

Check intermittent incident. Refer to Intermittent Incident.

REPLACE BACK DOOR LOCK ASSEMBLY AND ERASE DTC

CONSULT

  1. Ignition switch OFF.

  2. Replace back door lock assembly. 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 “B242A-01” detected?

YES>>

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

NO>>

Inspection End.

Diagnosis Procedure (B242A-11)

CHECK CLOSURE MOTOR CIRCUIT

  1. Ignition switch OFF.

  2. Disconnect automatic back door control module and back door lock assembly connector.

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

    Automatic back door control module Ground Continuity
    Connector Terminal
    B56 31 No
    38

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 back door lock assembly 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 “B242A-11” detected?

YES>>

GO TO 3.

NO>>

Check intermittent incident. Refer to Intermittent Incident.

REPLACE BACK DOOR LOCK ASSEMBLY AND ERASE DTC

CONSULT

  1. Ignition switch OFF.

  2. Replace back door lock assembly. 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 “B242A-11” detected?

YES>>

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

NO>>

Inspection End.

Diagnosis Procedure (B242A-12)

CHECK CLOSURE MOTOR CIRCUIT

  1. Ignition switch OFF.

  2. Disconnect automatic back door control module and back door lock assembly connector.

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

    (+) (–)

    Voltage

    (Approx.)
    Automatic back door control module
    Connector Terminal
    B56 31 Ground 0 V
    38

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 back door lock assembly 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 “B242A-12” detected?

YES>>

GO TO 3.

NO>>

Check intermittent incident. Refer to Intermittent Incident.

REPLACE BACK DOOR LOCK ASSEMBLY AND ERASE DTC

CONSULT

  1. Ignition switch OFF.

  2. Replace back door lock assembly. 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 “B242A-12” detected?

YES>>

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

NO>>

Inspection End.

Diagnosis Procedure (B242A-13)

CHECK CLOSURE MOTOR CIRCUIT

  1. Ignition switch OFF.

  2. Disconnect automatic back door control module and back door lock assembly connector.

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

    Automatic back door control module Back door lock assembly Continuity
    Connector Terminal Connector Terminal
    B56 31 D557 1 Yes
    38 2

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 back door lock assembly 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 “B242A-13” detected?

YES>>

GO TO 3.

NO>>

Check intermittent incident. Refer to Intermittent Incident.

REPLACE BACK DOOR LOCK ASSEMBLY AND ERASE DTC

CONSULT

  1. Ignition switch OFF.

  2. Replace back door lock assembly. 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 “B242A-13” detected?

YES>>

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

NO>>

Inspection End.

Diagnosis Procedure (B242A-63)

ERASE DTC

CONSULT

  1. Ignition switch ON.

  2. At least 12 minutes are passed after automatic back door operation is inhibited.

  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 “B242A-63” detected?

YES>>

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

NO>>

Inspection End.

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