Nissan Pathfinder: Door & Lock - Dtc/circuit Diagnosis

• Ajar Switch
• Back Door Opener Actuator
• Back Door Opener Switch
• Back Door Request Switch
• Door Request Switch
• Door Switch
• Hazard Function
• Intelligent Key Battery
• Intelligent Key Warning Buzzer
• Touch Sensor
• Unlock Sensor
• 4022 B2001-45 Intelligent Key Unit
• 4022 B2010-1c Battery Voltage
• 4022 B203c-14 Inside Antenna
• 4022 B203e-14 Outside Antenna
• 4022 B2046-42 Eeprom
• 4022 B2087 One Touch Sensor (fl)
• 4022 B2086-23: Request Sw (bd/tr)
• 4022 B2409-12 Half Latch Switch
• 4022 B2409-14 Half Latch Switch
• 4022 B2417-15 Touch Sensor Circuit Lh Open
• 4023 B2419-12 Open Switch
• 4023 B2419-14 Open Switch
• 4023 B2422-78 Back Door Position Abnormal
• 4023 B2426-11 Spindle Sensor Lh
• 4023 B2426-12 Spindle Sensor Lh
• 4023 B2426-13 Spindle Sensor Lh
• 4023 B2426-25 Spindle Sensor Lh
• 4023 B2428-44 Automatic Back Door Control Unit
• 4023 B2428-52 Automatic Back Door Control Unit
• 4023 B2428-54 Automatic Back Door Control Unit
• 4024 B242a-98 Closure Motor
• 4024 B2436-11 Spindle Motor Lh
• 4024 B2436-12 Spindle Motor Lh
• 4024 B2436-98 Spindle Motor Lh
• 4024 B2f06-11 Trunk/back Door Opener Sw
• 4024 U0075-00 Communication Bus C Off
• 4024 U2140-87 Can Ecm
• 4024 U2141-87 Communication Lost with Atcu
• 4024 Automatic Back Door Close Switch
• 4024 Automatic Back Door Serial Communication

Ajar Switch Nissan Pathfinder 5th Gen

ComponentFunctionCheck

CHECK FUNCTION

CONSULT

1. Ignition switch ON.

2. Select “TRUNK” of “BCM”.

3. Select “Back door/trunk lid switch” in “DATA MONITOR” mode.

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

Monitor item	Condition		Status
Back door/trunk lid switch	Back door	Open	On
		Closed	Off

Is the inspection result normal?

YES>>

Back door switch is OK.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK AJAR 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	7	Ground	Battery voltage

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK AJAR SWITCH CIRCUIT

1. Disconnect BCM connector.

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

   Back door lock assembly		BCM		Continuity
   Connector	Terminal	Connector	Terminal
   D557	7	B59	96	Yes

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

   Back door lock assembly		(-)	Continuity
   Connector	Terminal
   D557	7	Ground	No

Is the inspection result normal?

YES>>

Replace BCM. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK AJAR SWITCH GROUND CIRCUIT

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

Back door lock assembly		(-)	Continuity
Connector	Terminal
D557	8	Ground	Yes

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace harness.

CHECK AJAR SWITCH

Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

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

CHECK INTERMITTENT INCIDENT

Refer to Intermittent Incident.

>>

Inspection End.

Component Inspection

CHECK AJAR SWITCH

1. Ignition switch OFF.

2. Disconnect back door lock assembly connector.

3. Check continuity between back door lock assembly terminals.

   Back door lock assembly		Condition		Continuity
   Terminal
   7	8	Back door	Open	Yes
   			Close	No

Is the inspection result normal?

YES>>

Inspection End.

NO>>

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

Back Door Opener Actuator Nissan Pathfinder SUV

ComponentFunctionCheck

CHECK FUNCTION

CONSULT

1. Ignition switch ON.

2. Select “TRUNK” of “BCM”.

3. Select “Trunk/back door” in “ACTIVE TEST” mode.

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

   Monitor item		Status
   Trunk/back door	On	Back door	OPEN

Is the inspection result normal?

YES>>

Back door opener actuator is OK.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK BACK DOOR OPENER ACTUATOR 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.

(+)		(–)	Condition		Voltage (Approx.)
Back door lock assembly
Connector	Terminal
D557	4	Ground	Back door opener switch	ON	Battery voltage

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK BACK DOOR OPENER ACTUATOR CIRCUIT

1. Disconnect back door control module connector.

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

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

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

   Back door control module		—	Continuity
   Connector	Terminal
   B55	11	Ground	No

Is the inspection result normal?

YES>>

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

NO>>

Repair or replace harness.

CHECK BACK DOOR OPENER ACTUATOR GROUND CIRCUIT

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

Back door lock assembly		—	Continuity
Connector	Terminal
D557	8	Ground	Yes

Is the inspection normal?

YES>>

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

NO>>

Repair or replace harness.

Back Door Opener Switch Nissan Pathfinder Fifth generation

ComponentFunctionCheck

CHECK FUNCTION

CONSULT

1. Ignition switch ON.

2. Select “TRUNK” of “BCM”.

3. Select “Request switch BD/TR” in “DATA MONITOR” mode.

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

Monitor item	Condition		Status
Request switch BD/TR	Back door opener switch	Pressed	On
		Released	Off

Is the inspection result normal?

YES>>

Back door opener switch is OK.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK BACK DOOR OPEN INPUT SIGNAL

1. Ignition switch OFF.

2. Disconnect back door opener switch connector.

3. Check voltage between back door opener switch harness connector and ground.

   (+)		(–)	Voltage (Approx.)
   Back door opener switch
   Connector	Terminal
   D559	1	Ground	Battery voltage

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK BACK DOOR OPENER SWITCH CIRCUIT

1. Disconnect BCM connector.

2. Check continuity between BCM harness connector and back door opener switch harness connector.

   BCM		Back door opener switch		Continuity
   Connector	Terminal	Connector	Terminal
   B59	98	D559	1	Yes

3. Check continuity between BCM harness connector and ground.

   BCM		—	Continuity
   Connector	Terminal
   B59	98	Ground	No

Is the inspection result normal?

YES>>

Replace BCM. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK BACK DOOR OPENER SWITCH GROUND CIRCUIT

Check continuity between back door opener switch harness connector and ground.

Back door opener switch		—	Continuity
Connector	Terminal
D559	2	Ground	Yes

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace harness.

CHECK BACK DOOR OPENER SWITCH

Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Replace back door opener switch. Refer to Removal and Installation.

CHECK INTERMITTENT INCIDENT

Refer to Intermittent Incident.

>>

Inspection End.

Component Inspection

CHECK BACK DOOR OPENER SWITCH

1. Ignition switch OFF.

2. Disconnect back door opener switch connector.

3. Check continuity between back door opener switch terminals.

   Back door opener switch		Condition		Continuity
   Terminal
   1	2	Back door opener switch	Pressed	Yes
   			Released	No

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace back door opener switch. Refer to Removal and Installation.

Back Door Request Switch Nissan Pathfinder 5th Gen

Component Inspection

CHECK BACK DOOR REQUEST SWITCH

1. Ignition switch OFF.

2. Disconnect back door opener switch connector.

3. Check back door opener switch terminals.

Back door opener switch		Condition		Continuity
Terminal
3	4	Back door request switch	Pressed	Yes
			Released	No

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace back door opener switch. Refer to Removal and Installation.

Door Request Switch Nissan Pathfinder 5th Gen

Component Inspection

CHECK DOOR REQUEST SWITCH

1. Ignition switch OFF.

2. Disconnect malfunctioning door request switch connector.

3. Check continuity between malfunctioning door request switch terminals.

Door request switch		Condition		Continuity
Terminal
1	2	Door request switch	Pressed	Yes
			Released	No

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace outside handle. Refer to Removal and Installation (front door) or Removal and Installation (rear door).

Door Switch Nissan Pathfinder 5th Gen

ComponentFunctionCheck

CHECK FUNCTION

CONSULT

1. Select “DOOR LOCK” of “BCM”.

2. Select “DOOR SW-DR”, “Door switch AS”, “DOOR SW-RL” and “DOOR SW-RR” in “DATA MONITOR” mode.

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

Monitor item	Condition		Status
DOOR SW-DR	Front door LH	Open	On
		Closed	Off
Door switch AS	Front door RH	Open	On
		Closed	Off
DOOR SW-RL	Rear door LH	Open	On
		Closed	Off
DOOR SW-RR	Rear door RH	Open	On
		Closed	Off

Is the inspection result normal?

YES>>

Door switch is OK.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK DOOR SWITCH INPUT SIGNAL

1. Ignition switch OFF.

2. Disconnect malfunctioning door lock assembly connector.

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

   (+)			(–)	Voltage (Approx.)
   Door lock assembly
   Connector		Terminal
   Front LH	D14	5	Ground	Battery voltage
   Front RH	D114	8
   Rear LH	D205	5
   Rear RH	D305	8

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK DOOR SWITCH CIRCUIT

1. Disconnect BCM connector.

2. Check continuity between door lock assembly harness connector and BCM harness connector.

   Door lock assembly			BCM		Continuity
   Connector		Terminal	Connector	Terminal
   Front LH	D14	5	B59	81	Yes
   Front RH	D114	8		93
   Rear LH	D205	5		94
   Rear RH	D305	8		95

3. Check continuity between door lock assembly harness connector and ground.

   Door lock assembly			—	Continuity
   Connector		Terminal
   Front LH	D14	5	Ground	No
   Front RH	D114	8
   Rear LH	D205	5
   Rear RH	D305	8

Is the inspection result normal?

YES>>

Replace BCM. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK DOOR SWITCH GROUND CIRCUIT

Check continuity between door lock assembly harness connector and ground.

Door lock assembly			—	Continuity
Connector		Terminal
Front LH	D14	6	Ground	Yes
Front RH	D114	7
Rear LH	D205	6
Rear RH	D305	7

YES>>

GO TO 4.

NO>>

Repair or replace harness.

CHECK DOOR SWITCH

Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Replace malfunctioning door lock assembly. Refer to Removal and Installation (front door) or Removal and Installation (rear door).

CHECK INTERMITTENT INCIDENT

Refer to Intermittent Incident.

>>

Inspection End.

Component Inspection

CHECK DOOR SWITCH

1. Ignition switch OFF.

2. Disconnect malfunctioning door lock assembly connector.

3. Check continuity between door lock assembly terminals.

   Door lock assembly			Condition		Continuity
   Terminal
   Front LH	5	6	Door	Closed	No
   				Opened	Yes
   Front RH	7	8		Closed	No
   				Opened	Yes
   Rear LH	5	6		Closed	No
   				Opened	Yes
   Rear RH	7	8		Closed	No
   				Opened	Yes

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace malfunctioning door lock assembly. Refer to Removal and Installation (front door) or Removal and Installation (rear door).

Hazard Function Nissan Pathfinder 5th Gen

ComponentFunctionCheck

CHECK FUNCTION

CONSULT

1. Select “FLASHER” of “BCM”.

2. Select “FLASHER” in “ACTIVE TEST” mode.

3. Touch “LH” or “RH” to check that it works normally.

Is the inspection result normal?

YES>>

Hazard warning lamp circuit is OK.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK HAZARD OPERATION

Refer to System Description.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Refer to Symptom Table.

CHECK INTERMITTENT INCIDENT

Refer to Intermittent Incident.

>>

Inspection End.

Intelligent Key Battery Nissan Pathfinder 5th Gen

Component Inspection

CHECK INTELLIGENT KEY BATTERY

Check by connecting a resistance (approximately 300 Ω) so that the current value becomes about 10 mA. Refer to Removal and Installation.

Standard

: Approx. 2.5 - 3.0 V

Is the measurement value within the specification?

YES>>

Inspection End.

NO>>

Replace Intelligent Key battery.

Intelligent Key Warning Buzzer Nissan Pathfinder Fifth generation

Diagnosis Procedure

CHECK INTELLIGENT KEY WARNING BUZZER POWER SUPPLY CIRCUIT

1. Ignition switch OFF.

2. Check signal between Intelligent Key warning buzzer harness connector and ground using oscilloscope.

   (+)		(–)	Condition	Signal (Reference value)
   Intelligent Key warning buzzer
   Connector	Terminal
   B408	1	Ground	Sounding NOTE: The pulse cycle changes depending on buzzer sounds.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK INTELLIGENT KEY WARNING BUZZER CIRCUIT

1. Disconnect Intelligent Key unit connector and Intelligent Key warning buzzer connector.

2. Check continuity between Intelligent Key unit harness connector and Intelligent Key warning buzzer harness connector.

   Intelligent Key unit		Intelligent Key warning buzzer		Continuity
   Connector	Terminal	Connector	Terminal
   M38	3	B408	1	Yes

3. Check continuity between Intelligent Key unit harness connector and ground.

   Intelligent Key unit		—	Continuity
   Connector	Terminal
   M38	3	Ground	No

Is the inspection result normal?

YES>>

Replace Intelligent Key unit. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK INTELLIGENT KEY WARNING BUZZER GROUND CIRCUIT

Check continuity between Intelligent Key warning buzzer harness connector and ground.

Intelligent Key warning buzzer		—	Continuity
Connector	Terminal
B408	2	Ground	Yes

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace harness.

CHECK INTELLIGENT KEY WARNING BUZZER

Check Intelligent Key warning buzzer. Refer to Component Inspection.

Is the inspection result normal?

YES>>

Check intermittent incident. Refer to Intermittent Incident.

NO>>

Replace Intelligent Key warning buzzer. Refer to Removal and Installation.

Component Inspection

CHECK INTELLIGENT KEY WARNING BUZZER

1. Ignition switch OFF.

2. Disconnect Intelligent Key warning buzzer connector.

3. Connect battery power supply directly to Intelligent Key warning buzzer terminals and check the operation.

   Intelligent Key warning buzzer		Operation
   Terminal
   (+)	(−)
   1	2	Buzzer sounds

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace Intelligent Key warning buzzer. Refer to Removal and Installation.

Touch Sensor Nissan Pathfinder 2022

Component Inspection

CHECK TOUCH SENSOR

1. Ignition switch OFF.

2. Disconnect touch sensor connector.

3. Check resistance between touch sensor terminals.

Touch sensor		Condition		Resistance
Terminal
1	4	Touch sensor	Detect obstruction	400 Ω or less
			Other than above	0.95 – 1.05 kΩ

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace touch sensor. Refer to Removal and Installation.

Unlock Sensor Nissan Pathfinder Fifth generation

Diagnosis Procedure

CHECK UNLOCK SENSOR INPUT SIGNAL

1. Ignition switch OFF.

2. Disconnect front door lock assembly LH connector.

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

   (+)		(–)	Voltage (Approx.)
   Front door lock assembly LH
   Connector	Terminal
   D14	7	Ground	Battery voltage

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

GO TO 2.

CHECK UNLOCK SENSOR CIRCUIT

1. Disconnect BCM connector.

2. Check continuity between BCM harness connector and front door lock assembly LH harness connector.

   BCM		Front door lock assembly LH		Continuity
   Connector	Terminal	Connector	Terminal
   M18	10	D14	7	Yes

3. Check continuity between BCM harness connector and ground.

   BCM		—	Continuity
   Connector	Terminal
   M18	10	Ground	No

Is the inspection result normal?

YES>>

Replace BCM. Refer to Removal and Installation.

NO>>

Repair or replace harness.

CHECK UNLOCK SENSOR GROUND CIRCUIT

Check continuity between front door lock assembly LH harness connector and ground.

Front door lock assembly LH		—	Continuity
Connector	Terminal
D14	6	Ground	Yes

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace harness.

CHECK UNLOCK SENSOR

Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Replace front door lock assembly LH. Refer to Removal and Installation.

CHECK INTERMITTENT INCIDENT

Refer to Intermittent Incident.

>>

Inspection End.

Component Inspection

CHECK UNLOCK SENSOR

1. Ignition switch OFF.

2. Disconnect front door lock assembly LH connector.

3. Check continuity between front door lock assembly LH terminals.

Front door lock assembly LH		Condition		Continuity
Terminal
6	7	Front door LH	Unlock	Yes
			Lock	No

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace front door lock assembly LH. Refer to Removal and Installation.