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Nissan Pathfinder Owners & Service Manuals

Nissan Pathfinder: Door & Lock - Ecu Diagnosis Information

Nissan Pathfinder (R53) 2022-2025 Service Manual / Body Exterior, Doors, Roof & Vehicle Security :: Door & Lock / Ecu Diagnosis Information

Bcm Nissan Pathfinder Fifth generation

List of ECU Reference

ECU Reference
BCM Values On The Diagnosis Tool
Reference Value
Fail-safe
DTC Inspection Priority Chart
DTC Index

Intelligent Key Unit ➤ Nissan Pathfinder 5th Gen

Automatic Back Door Control Unit Nissan Pathfinder Fifth generation

Reference Value

VALUES ON THE DIAGNOSIS TOOL

NOTE:

The following table includes information (items) inapplicable to this Nissan Pathfinder vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items.

CONSULT MONITOR ITEM
Monitor Item Condition Value/Status
Automatic back door status Automatic back door system Malfunction: All functions cannot operate NG 1
Malfunction: Only AUTO CLOSER FUNCTION can operate NG 2

NOTE:

This item is displayed, but cannot be monitored

 Not used
Normal Normal
ABD position learn status Calibration of automatic back door position information Not complete Yet
Complete Done
Automatic back door close SW Automatic back door close switch Released Off
Pressed On
Automatic back door SW Automatic back door switch Released Off
Short pressed Short
Long pressed Long

NOTE:

This item is displayed, but cannot be monitored

 Not used
Lock & close SW Automatic back door lock and close switch Released Off
Pressed On
Keyless signal (back door) Intelligent Key button (back door) Released Off
Short pressed Short
Long pressed Long

NOTE:

This item is displayed, but cannot be monitored

 Not used
ABD OPE REQ (opener SW) Back door opener switch

NOTE:

This item is displayed, but cannot be monitored

 Not used
Released Off
Pressed On

NOTE:

This item is displayed, but cannot be monitored

 Not used
ABD OPE REQ (hands free) Hands free sensor Other than bellow Off
Detected On
Spindle sensor LH Back door Open The numeral value increases
Close The numeral value decreases
Spindle sensor RH Back door Open The numeral value increases
Close The numeral value decreases
Half latch SW Back door Fully closed/ half latch Off
Open On
Close SW Back door Other than bellow Off
Closure operation (open) On
Open SW Back door Other than bellow Off
Closure operation (close) On
Touch sensor LH Touch sensor LH Other than bellow Off
Detect obstruction On
Circuit open Open

NOTE:

This item is displayed, but cannot be monitored

 Not used
Touch sensor RH Touch sensor RH Other than bellow Off
Detect obstruction On
Circuit open Open

NOTE:

This item is displayed, but cannot be monitored

 Not used
Nissan Pathfinder Vehicle condition Vehicle status Sleep status Sleep

NOTE:

This item is displayed, but cannot be monitored

 Not used

AUTO ACC status (remaining time 60 seconds or less) IGN OFF ⇒ Door open

IGN OFF ⇒ Door open 		ACC 1

AUTO ACC status (remaining time 60 seconds or more)

IGN ON ⇒ IGN OFF 		ACC 2

NOTE:

This item is displayed, but cannot be monitored

 Not used
Ignition switch ON IGN ON
Engine cranking Cranking
Engine running Running
Engine restart Restart
stop/start operation stop/start

NOTE:

This item is displayed, but cannot be monitored

 Unavailable
Door lock operation Other than bellow Off
When door lock operation using door request switch or Intelligent Key On
Nissan Pathfinder Vehicle speed While driving Equivalent to speedometer reading
Parking brake SW Parking brake Off Off
On On
P range Selector lever Other than P position Off
P position On
Transmission type Transmission type is displayed AT/CVT
Ignition switch Ignition switch Other than ON position Off
ON position On
ABD C/U power supply — Battery voltage
Sleep/wake up Nissan Pathfinder Vehicle status Sleep status Sleep

NOTE:

This item is displayed, but cannot be monitored

 Not used

NOTE:

This item is displayed, but cannot be monitored

 Not used
Wake–up status Wake up
Door lock interlock OPE COND Automatic back door system (automatic back door lock and close switch operation) Other than bellow Off
Any door open NG 1
Intelligent Key cannot detected or Key ID unmatched NG 2
Normal Normal
Diagnosis mask status Sleep or cranking Status 1
Auto ACC Status 2
Ignition switch ON and battery voltage 10 V or less Status 3
Ignition switch ON and battery voltage 10 V or more Status 4
Receives invalid CAN signal Status 5

NOTE:

This item is displayed, but cannot be monitored

 Not used

NOTE:

This item is displayed, but cannot be monitored

 Not used

NOTE:

This item is displayed, but cannot be monitored

 Unavailable
Meter setting 1 (ABD) Power back door setting Other than bellow Not ope
OFF Off
ON On
Reset Reset
Sleep condition

NOTE:

This item is displayed, but cannot be monitored

 Not used
Automatic back door system is operate NG
Automatic back door system is not operate OK

NOTE:

This item is displayed, but cannot be monitored

 Not used
Meter setting 2 (ABD) Power back door setting OFF Off
ON On
ABD operation status Automatic back door Other than bellow Off
Open operation Open
Close operation Close
Lock and close oeration Doorlock
ABD operation permission Automatic back door system operating condition Operation not permitted NG
Activation permission OK
When low battery voltage Stop

NOTE:

This item is displayed, but cannot be monitored

 Not used
Nissan Pathfinder Vehicle speed diagnosis 1 When the received vehicle speed signal is normal OK
When the received Nissan Pathfinder vehicle speed signal is abnormal NG
Vehicle speed diagnosis 2 When the received Nissan Pathfinder vehicle speed signal is normal OK
When the received Nissan Pathfinder vehicle speed signal is abnormal NG
Open SW error count Displays the number of count up of the open switch malfunction. 0 – 3
Close SW error count Displays the number of count up of the close switch malfunction. 0 – 3

TERMINAL LAYOUT

PHYSICAL VALUES

NOTE:

Waveform reference

Terminal No.

(Wire color) 		Description Condition

Voltage

(Approx.)
(+) (–) Signal name Input/Output

3

(LA/R) 		Ground Automatic back door close switch Input Automatic back door close switch Pressed 0 - 1 V
Released Battery voltage

4

(LA/LG) 		Ground Automatic back door switch Input Automatic back door switch Pressed 0 - 1 V
Released Battery voltage

9

(LA/SB) 		Ground Close switch signal Input Back door closure motor Open operation 0 - 1 V
Other than above Battery voltage

10

(LA/P) 		Ground Half latch switch signal Input Back door Open 0 - 1 V
Fully closed/half latch Battery voltage

11

(LA/G) 		Ground Open switch signal Input Back door closure motor Close operation 0 - 1 V
Other than above Battery voltage

12

(LA/Y) 		Ground Touch sensor LH signal Input Touch sensor LH Detect obstruction 0.2 - 3 V
Other than above 3.4 - 6.5 V

13

(LA/LG) 		Ground Touch sensor RH signal Input Touch sensor RH Detect obstruction 0.2 - 3 V
Other than above 3.4 - 6.5 V

14

(LA/GR) 		Ground Touch sensor ground Input — 0 - 1 V
          Not sounding 0 - 1 V

16

(LA/R) 		Ground CAN-Low Input/Output — —

18

(LA/GR) 		Ground Encoder RH B signal Input — 0 - 1 V

19

(LA/BR) 		Ground Encoder RH A signal Input — 0 - 1 V

20

(LA/P) 		Ground Encoder RH power supply Output — 0 - 1 V

21

(LA/V) 		Ground Automatic back door lock and close switch Input Automatic back door lock and close switch Pressed 0 - 1 V
Released Battery voltage

28

(LA/SB) 		Ground Encoder ground — — 0 - 1 V

29

(LA/L) 		Ground Encoder LH B signal Input Back door Moving (auto)

When stopped 0 - 1 V or Battery voltage

30

(LA/R) 		Ground Encoder LH A signal Input Back door Moving (auto)

When stopped 0 - 1 V or Battery voltage

31

(LA/Y) 		Ground Encoder LH power supply Output — Battery voltage

32

(LA/L) 		Ground CAN-High Input/Output — —

33

(L) 		Ground Back door closure motor (open) Output Back door Open operation Battery voltage
Other than above 5 V

34

(SB) 		Ground Back door closure motor (close) Output Back door Close operation Battery voltage
Other than above 5 V

35

(R) 		Ground Spindle motor RH (open) Output Back door Auto open operation

Auto close operation 0 - 1 V

37

(BR) 		Ground Power supply (BAT) Input — Battery power supply

38

(V) 		Ground Spindle motor LH (open) Output Back door Auto open operation

Auto close operation 0 - 1 V

39

(LG) 		Ground Spindle motor LH (close) Output Back door Auto close operation

Auto open operation 0 - 1 V

40

(B) 		Ground Spindle motor RH (close) Output Back door Auto close operation

Auto open operation 0 - 1 V

42

(GR) 		Ground Ground — — 0 - 1 V

44

(W) 		Ground Ground (noise shield) — — 0 - 1 V

Fail-safe

Refer to Fail-safe.

DTC Inspection Priority Chart

If some DTCs are displayed at the same time, perform inspections one by one based on the following priority chart.

Priority DTC
1

  • B2428–44: Automatic back door control unit

  • B2428–45: Automatic back door control unit

  • B2428–46: Automatic back door control unit

  • B2428–49: Automatic back door control unit

  • B2428–52: Automatic back door control unit

  • B2428–54: Automatic back door control unit

  • U0075–00: Control module comm Bus C Off

  • U2141–87: Communication lost with ATCU

  • U2148–87: Communication lost with VDC

  • U214E–87: Communication lost with METER

  • U214F–87: Communication lost with BCM

  • U215B–87: Communication lost with USM
2

  • B2409–12: Half latch switch

  • B2409–14: Half latch switch

  • B2416–15: Touch sensor circuit RH open

  • B2417–15: Touch sensor circuit LH open

  • B2419–12: Open switch

  • B2419–14: Open switch

  • B2420–12: Close switch

  • B2420–14: Close switch

  • B2422–78: Back door position abnormal

  • B2422–79: Back door position abnormal

  • B2426–11: Spindle sensor LH

  • B2426–12: Spindle sensor LH

  • B2426–13: Spindle sensor LH

  • B2426–25: Spindle sensor LH

  • B2427–11: Spindle sensor RH

  • B2427–12: Spindle sensor RH

  • B2427–13: Spindle sensor RH

  • B2427–25: Spindle sensor RH

  • B242A–11: Closure motor

  • B242A–12: Closure motor

  • B242A–13: Closure motor

  • B242A–19: Closure motor

  • B242A–98: Closure motor

  • B2436–11: Spindle motor LH

  • B2436–12: Spindle motor LH

  • B2436–13: Spindle motor LH

  • B2436–19: Spindle motor LH

  • B2436–98: Spindle motor LH

  • B2437–11: Spindle motor RH

  • B2437–12: Spindle motor RH

  • B2437–13: Spindle motor RH

  • B2437–19: Spindle motor RH

  • B2437–98: Spindle motor RH

DTC Index

NOTE:

Details of time display

  • 1 - 39: Displayed if any previous malfunction is present when current condition is normal. It increases like 1 → 2 → 3...38 → 39 after returning to the normal condition whenever ignition switch OFF → ON. The counter remains at 39 even if the number of cycles exceeds it. It is counted from 1 again when placing ignition switch OFF → ON after returning to the normal condition if the malfunction is detected again.

Self Diagnostic Result
CONSULT display Fail-safe Reference page
B2409-12: Half latch switch × DTC Description
B2409-14: Half latch switch × DTC Description
B2416-15: Touch sensor circuit RH open × DTC Description
B2417-15: Touch sensor circuit LH open × DTC Description
B2419-12: Open switch × DTC Description
B2419-14: Open switch × DTC Description
B2420-12: Close switch × DTC Description
B2420-14: Close switch × DTC Description
B2422-78: Back door position abnormal × DTC Description
B2422-79: Back door position abnormal × DTC Description
B2426-11: Spindle sensor LH × DTC Description
B2426-12: Spindle sensor LH × DTC Description
B2426-13: Spindle sensor LH × DTC Description
B2426-25: Spindle sensor LH × DTC Description
B2427-11: Spindle sensor RH × DTC Description
B2427-12: Spindle sensor RH × DTC Description
B2427-13: Spindle sensor RH × DTC Description
B2427-25: Spindle sensor RH × DTC Description
B2428-44: Automatic back door control unit × DTC Description
B2428-45: Automatic back door control unit × DTC Description
B2428-46: Automatic back door control unit × DTC Description
B2428-49: Automatic back door control unit × DTC Description
B2428-52: Automatic back door control unit × DTC Description
B2428-54: Automatic back door control unit × DTC Description
B242A-11: Closure motor × DTC Description
B242A-12: Closure motor × DTC Description
B242A-13: Closure motor × DTC Description
B242A-19: Closure motor × DTC Description
B242A-98: Closure motor × DTC Description
B2436-11: Spindle motor LH × DTC Description
B2436-12: Spindle motor LH × DTC Description
B2436-13: Spindle motor LH × DTC Description
B2436-19: Spindle motor LH × DTC Description
B2436-98: Spindle motor LH × DTC Description
B2437-11: Spindle motor RH × DTC Description
B2437-12: Spindle motor RH × DTC Description
B2437-13: Spindle motor RH × DTC Description
B2437-19: Spindle motor RH × DTC Description
B2437-98: Spindle motor RH × DTC Description
Network-DTC
CONSULT display Fail-safe Reference page
U0075–00: Control module comm Bus C Off × DTC Description
U2141–87: Communication lost with ATCU × DTC Description
U2148–87: Communication lost with VDC × DTC Description
U214E–87: Communication lost with METER × DTC Description
U214F–87: Communication lost with BCM × DTC Description
U215B–87: Communication lost with USM × DTC Description

Hands Free Sensor Control Unit Nissan Pathfinder

Reference Value

TERMINAL LAYOUT

PHYSICAL VALUES

Terminal No.

(Wire color) 		Description Condition

Voltage

(Approx.)
(+) (–) Signal name Input/Output

1

(GR) 		Ground Serial communication Input/Output Ignition switch ON

2

(W) 		Ground Power supply (BAT) Input — Battery voltage

3

(B) 		Ground Ground — — 0 V

4

(R) 		Ground Hands free sensor (upper side) input signal Input — —

5

(L) 		Ground Hands free sensor (upper side) output signal Output — —

6

(P) 		Ground Hands free sensor (lower side) input signal Input — —

7

(LG) 		Ground Hands free sensor (lower side) output signal Output — —

NOTE:

Voltage generated in communication circuit between hands free sensor and hands free sensor control unit is extremely low and therefore cannot be measured.

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Nissan Pathfinder (R53) 2022-2025 Service Manual

Ecu Diagnosis Information

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