Nissan Pathfinder: System Description - System (automatic Back Door System) ++

System Description

SYSTEM DIAGRAM

System Description

The automatic back door system performs the automatic open/close operation of the back door by operating the automatic back door switch, automatic back door close switch, automatic back door lock and close switch, back door opener switch, hands free sensor, and Intelligent Key.

Automatic back door system controls operation function of the following items.

• Hands free function (hands free sensor operation)

• Automatic open/close temporary stop function

• Back door open position setting function

• Automatic back door open/close function

• Warning function

• Back door auto closure function

• Anti-pinch function

Signal transmission function list

Signal name	Input	Output	Description
Automatic back door switch signal	Automatic back door switch	Automatic back door control unit	Inputs automatic back door switch signal.
Automatic back door close switch signal	Automatic back door close switch	Automatic back door control unit	Inputs automatic back door close switch signal.
Touch sensor LH signal	Touch sensor LH	Automatic back door control unit	Inputs touch sensor LH signal.
Touch sensor RH signal	Touch sensor RH	Automatic back door control unit	Inputs touch sensor RH signal.
Half latch switch signal	Back door lock assembly	Automatic back door control unit	Inputs half latch switch signal.
Open switch signal	Back door lock assembly	Automatic back door control unit	Inputs open switch signal.
Close switch signal	Back door lock assembly	Automatic back door control unit	Inputs close switch signal.
Encoder signal	Spindle unit LH	Automatic back door control unit	Inputs encoder signal.
Hands free sensor signal	Hands free sensor (Upper side)	Hands free sensor control unit	Inputs hands free sensor signal.
	Hands free sensor (lower side)
Encoder signal	Spindle unit LH	Automatic back door control unit	Inputs encoder signal.
Key ID signal	Remote keyless entry receiver	Intelligent Key Unit	Inputs Key ID signal.
Outside key antenna signal	Outside key antenna (rear bumper)	Intelligent Key Unit	Inputs outside key antenna signal.
Back door opener switch signal	Back door opener switch	BCM	Inputs back door opener switch signal.
Automatic back door serial link	Hands free sensor control unit	BCM	Inputs automatic back door serial link and transmits it via communication line.
Automatic back door operation request signal	Hands free sensor control unit	BCM	Inputs automatic back door operation request signal and transmits it via communication line.
Automatic back door setting signal	Automatic back door control unit	BCM	Inputs automatic back door setting signal and transmits it via CAN communication.
Shift position signal	TCM	BCM	Inputs shift position signal and transmits it via CAN communication.
Nissan Pathfinder Vehicle speed signal	ABS actuator and electric unit (control unit)	BCM	Inputs Nissan Pathfinder vehicle speed signal and transmits it via CAN communication.
Key ID verification request signal	Intelligent Key Unit	BCM	Inputs key ID verification request signal and transmits it via CAN communication.
Key ID verification completed signal	Intelligent Key Unit	BCM	Inputs key ID verification completed signal and transmits it via CAN communication.
Ignition switch ON signal	Intelligent Key Unit	BCM	Inputs ignition switch ON signal and transmits it via CAN communication.
Wake up signal	Automatic back door control unit	Intelligent Key Unit	Inputs wake up signal and transmits it via CAN communication.
Sleep-ready signal	Automatic back door control unit	Intelligent Key Unit	Inputs sleep-ready signal and transmits it via CAN communication.
Back door open request signal	Automatic back door control unit	Intelligent Key Unit	Inputs back door open request signal and transmits it via CAN communication.
Sleep wake up signal	Automatic back door control unit	Intelligent Key Unit	Inputs sleep wake up signal and transmits it via CAN communication.
Door lock status signal	BCM	Intelligent Key Unit	Inputs door lock status signal and transmits it via CAN communication.
Nissan Pathfinder Vehicle status signal	BCM	IPDM E/R	Inputs Nissan Pathfinder vehicle status signal and transmits it via CAN communication.

HANDS FREE FUNCTION (HANDS FREE SENSOR OPERATION)

The hands free function is a function that automatically opens/closes the back door when the user moves a foot toward rear bumper and then pulls it back quickly (performs a kick motion).

Hands Free Sensor Operation

When the user performs a kick motion toward rear bumper while carrying Intelligent Key as shown in the figure, hands free sensor (upper side) detects shin motion of leg and hands free sensor (lower side) detects instep motion of foot. This varies the voltage waveform of hands free sensor. Hands free sensor control unit judges user operation by detecting the voltage change of hands free sensor.

NOTE: Quick forward kick and return while the Intelligent Key is within range. Wait approximately 2 seconds after kick.

NOTE: Do not swing foot side to side or pause during kick.

Hands Free Sensor Detection Area

It is necessary to perform a kick motion within space as shown in the figure for activating the hands free sensor completely. The detection area may differ depending on the conditions of the surroundings.

 

NOTE:

• For activating the hands free function, a kick motion must be detected by both hands free sensor (upper side) and hands free sensor (lower side).

• Hands free sensor may not operate in a place near a radio-wave generation source such as a coin-operated parking lot or radio wave tower.

• Hands free sensor may not operate if shoes that block static electricity (safety shoes, etc.) are worn when operating hands free sensor.

• Hands free sensor may not operate if there is any metal near rear bumper.

• Automatic open/close function may operate if hands free sensor detects an animal, rain, an object, etc. when Intelligent Key is near the rear bumper.

• When automatic open function is activated by hands free function, BCM unlocks all doors and activates Intelligent Key warning buzzer.

 

Operation Condition

When all of the following conditions are satisfied:

• Vehicle speed: 0 mp/h

• Shift position: P position

• Power back door setting: ON

• Intelligent Key: Within outside key antenna (rear bumper) detection area

Operation Description (Fully Closed to Fully Open of Back Door)

• When the user moves a foot toward rear bumper and pulls back quickly (performs a kick motion) while carrying Intelligent Key, voltage waveform change of hands free sensor (upper side) and hands free sensor (lower side) occurs.

• Hands free sensor control unit judges user operation by detecting the voltage waveform change of hands free sensor (upper side) and hands free sensor (lower side). The hands free sensor control unit then transmits automatic back door operation request signal to BCM via serial communication.

• When BCM receives an automatic back door operation request signal from hands free sensor control unit, the BCM transmits a key ID verification request signal to Intelligent Key unit via CAN communication.

• When Intelligent Key unit receives a key ID verification request signal, Intelligent Key unit activates outside key antenna (rear bumper) and checks that Intelligent Key is near rear bumper.

• When Intelligent Key is within the outside key antenna (rear bumper) detection area, Intelligent Key receives the request signal and transmits the key ID signal to Intelligent Key unit via remote keyless entry receiver.

• Intelligent Key unit receives key ID signal and verifies the received key ID with the registered key ID.

• When key IDs verification match, Intelligent Key unit transmits a key ID verification completed signal to automatic back door control unit via CAN communication. When selective unlock function is OFF, BCM unlocks all doors simultaneously. For details of selective unlock function, refer to System Description.

• When automatic back door control unit receives a key ID verification completed signal from Intelligent Key unit, the automatic back door control unit operates back door auto closure function and opens back door.

• Automatic back door control unit operates the automatic open function after back door auto closure function stops, and opens back door to the full open position^* automatically.

  ^*: Full open position can be changed with back door open position setting function.

Operation Description (Fully Open to Fully Closed of Back Door)

• When the user moves a foot toward rear bumper and pulls back quickly (performs a kick motion) while carrying Intelligent Key, voltage waveform change of hands free sensor (upper side) and hands free sensor (lower side) occurs.

• Hands free sensor control unit judges user operation by detecting the voltage waveform of hands free sensor (upper side) and hands free sensor (lower side). The hands free sensor control unit then transmits an automatic back door operation request signal to BCM via serial communication.

• When BCM receives an automatic back door operation request signal from hands free sensor control unit, the BCM transmits a key ID verification request signal to Intelligent Key unit via CAN communication.

• When Intelligent Key unit receives key ID verification request signal, Intelligent Key unit activates outside key antenna (rear bumper) and checks that Intelligent Key is near rear bumper.

• When Intelligent Key is within the outside key antenna (rear bumper) detection area, Intelligent Key receives the request signal and transmits the key ID signal to Intelligent Key unit via remote keyless entry receiver.

• Intelligent Key unit receives a key ID signal and verifies it with the registered key ID.

• When the key IDs match, Intelligent Key unit transmits the key ID verification completed signal to automatic back door control unit via CAN communication.

• When automatic back door control unit receives key ID verification completed signal from Intelligent Key unit, the automatic back door control unit operates automatic close function to close back door automatically until back door is in the ajar state (latch and striker are engaged).

• When automatic back door control unit detects back door ajar state, the unit operates back door auto closure function to close back door completely.

AUTOMATIC OPEN/CLOSE TEMPORARY STOP FUNCTION

Automatic open/close temporary stop function temporarily stops the open/close operation by operating back door opener switch, automatic back door lock and close switch, automatic back door close switch, automatic back door switch, Intelligent Key or hands free sensor during automatic open/close operation.

Each Switch, Intelligent Key or Hands Free Sensor Operation

• Automatic open/close operation stops when back door opener switch, automatic back door lock and close switch, automatic back door close switch, automatic back door switch, Intelligent Key or hands free sensor is operated during automatic open/close operation.

• If the back door opener switch, automatic back door lock and close switch, automatic back door close switch, automatic back door switch, Intelligent Key, or hands free sensor is operated during the operation of automatic open/close temporary stop function (back door operation is stopped), the back door direction of operation changes automatically. As a result, the back door operates in the direction opposite to the direction of operation before operation stop.

BACK DOOR OPEN POSITION SETTING FUNCTION

Back door open position setting function is a function that enables users to set the full opening stop position of automatic open operation when back door may contact an obstacle if fully opened by the automatic open operation.

CAUTION:

• It is not possible to set the position farther than the initial setting fully open position in the open direction.

• The position of back door cannot be set to approximately 30% or less than full open position. (Opening angle cannot be set to approximately 28° or less.)

• If a Nissan Pathfinder vehicle is parked on a steep slope after setting the fully open position of back door to half open or less, the door may open to near the half open position instead of stopping at the set position.

• When more than one user uses the Nissan Pathfinder vehicle, the back door fully open position setting function may be changed. Be careful when operating automatic open operation for the first time.

 

Setting Procedure

By performing the following operations, stop position of the back door open position setting function can be set.

1. Set the shift position to P range.

2. Fully close the back door. (When back door is already fully closed, this operation is not necessary.)

3. After turning OFF the power back door setting, release the latch by back door opener switch operation.

4. Manually move the back door to the desired stop position.

5. While maintaining the back door position, press and hold the automatic back door close switch for 3 seconds or more. When the setting is successfully completed, Intelligent Key warning buzzer sounds (pattern C).

Reset Procedure

By performing the following operation, the setting of the back door open position setting function can be canceled.

1. Set the shift position to P range.

2. Open the back door to the fully open position.

3. Manually move the back door to the upper limit position in the opening direction.

4. Press and hold the automatic back door close switch for 3 seconds or more. When the setting is successfully completed, Intelligent Key warning buzzer sounds (pattern C).

AUTOMATIC BACK DOOR OPEN/CLOSE FUNCTION

Automatic back door open/close function operates auto open/close of back door according to operation of automatic back door switch, automatic back door close switch, back door opener switch, hands free sensor, and Intelligent Key.

When pushing the automatic back door lock and close switch while carrying the Intelligent Key, the back door will close, and when fully closed, all doors can be locked.

Operation Condition

When all of the following conditions are satisfied:

• Shift position: P position

• Vehicle speed: 0 mp/h

• Power supply (automatic power back door control unit): Approx. 11 V or more

• Intelligent Key is within outside key antenna (rear bumper) detection area. (when automatic back door lock and lock and close switch operated)

• All doors are in unlock status (when automatic back door switch operated)

Automatic Open/close Operation When Each Switch is Operated

The automatic open/close operation when each switch is operated differs according to the stop position or operating status of back door. Refer to the following.

NOTE:

• When the back door position is in the range of [between "just before fully closed" and the position approximately less than 5.91 in (150 mm) from "just before fully closed"], the back door does not operate even if any of switches are operated. But this is not a malfunction.

• To operate the back door by switches, manually close the back door to "Fully closed" position or manually open the back door approximately 5.91 in (150 mm) or more from the position of "Just before fully closed". And then operate any of switches.

 

Automatic back door switch

Condition			Automatic back door switch	Back door operation
Back door position	Back door condition	Power back door setting
Full open	Stop	ON	Long press (0.5 sec)	Perform the automatic close function
		OFF		Non-operation
Fully open to just before fully open	Stop	ON	Long press (0.5 sec)	Perform the automatic close function
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation
Middle	Stop	ON	Long press (0.5 sec)	Automatic close operation (Operation before stop: when opening automatically) Automatic open operation (Operation before stop: when closing automatically)
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation
Just before fully closed to fully closed	Stop	ON	Long press (0.5 sec)	Perform the automatic open function
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation
Full closed	Stop	ON	Long press (0.5 sec)	Perform the automatic open function
		OFF		Non-operation

Intelligent Key (long press)

Condition			Intelligent Key	Back door operation
Back door position	Back door condition	Power back door setting
Full open	Stop	ON	Long press (0.5 sec)	Perform the automatic close function
		OFF		Non-operation
Fully open to just before fully open	Stop	ON	Long press (0.5 sec)	Perform the automatic close function
	Stop	OFF		Perform the automatic close function
Middle	Stop	ON	Long press (0.5 sec)	Automatic close operation (Operation before stop: when opening automatically) Automatic open operation (Operation before stop: when closing automatically)
	Stop	OFF		Non-operation
Just before fully closed to fully closed	Stop	ON	Long press (0.5 sec)	Perform the automatic open function
	Stop	OFF		Non-operation
Full closed	Stop	ON	Long press (0.5 sec)	Perform the automatic open function
		OFF		Non-operation

Intelligent Key (short press)

Condition			Intelligent Key	Back door operation
Back door position	Back door condition	Power back door setting
Full open	Stop	ON	Short press (0.1 sec)	Non-operation
		OFF
Fully open to just before fully open	Stop	ON	Short press (0.1 sec)	Non-operation
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation
Middle	Stop	ON	Short press (0.1 sec)	Non-operation
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation
Just before fully closed to fully closed	Stop	ON	Short press (0.1 sec)	Non-operation
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation
Full closed	Stop	ON	Short press (0.1 sec)	Non-operation
		OFF

Automatic back door lock and close switch

Condition			Automatic back door lock and close switch	Back door operation
Back door position	Back door condition	Power back door setting
Full open	Stop	ON	Press	Perform the automatic close function
		OFF		Non-operation
Fully open to just before fully open	Stop	ON	Press	Perform the automatic close function
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation
Middle	Stop	ON	Press	Perform the automatic close function
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation
Just before fully closed to fully closed	Stop	ON	Press	Non-operation
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation

Automatic back door close switch

Condition			Automatic back door close switch	Back door operation
Back door position	Back door condition	Power back door setting
Full open	Stop	ON	Press	Perform the automatic close function
		OFF		Non-operation
Fully open to just before fully open	Stop	ON	Press	Perform the automatic close function
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation
Middle	Stop	ON	Press	Automatic close operation (Operation before stop: when opening automatically) Automatic open operation (Operation before stop: when closing automatically)
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation
Just before fully closed to fully closed	Stop	ON	Press	Perform the automatic open function
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation

Back door opener switch

Condition			Back door opener switch	Back door operation
Back door position	Back door condition	Power back door setting
Full open	Stop	ON	Press	Perform the automatic close function
		OFF		Non-operation
Fully open to just before fully open	Stop	ON	Press	Perform the automatic close function
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation
Middle	Stop	ON	Press	Automatic close operation (Operation before stop: when opening automatically) Automatic open operation (Operation before stop: when closing automatically)
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation
Just before fully closed to fully closed	Stop	ON	Press	Perform the automatic open function
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation
Full closed	Stop	ON	Press	Perform the automatic open function
		OFF		Perform the back door auto closure open operation

Hands free function (hands free sensor operation)

Condition			Hands free sensor	Back door operation
Back door position	Back door condition	Power back door setting
Full open	Stop	ON	ON	Perform the automatic close function
		OFF		Non-operation
Fully open to just before fully open	Stop	ON	ON	Perform the automatic close function
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation
Middle	Stop	ON	ON	Automatic close operation (Operation before stop: when opening automatically) Automatic open operation (Operation before stop: when closing automatically)
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation
Just before fully closed to fully closed	Stop	ON	ON	Perform the automatic open function
	Automatic open function operating			Stop of the auto operation
	Automatic close function operating			Stop of the auto operation
	Stop	OFF		Non-operation
Full closed	Stop	ON	ON	Perform the automatic open function
		OFF		Non-operation

NOTE:

Intelligent Key must be carried for starting the automatic open/close function by hands free sensor operation (hands free function) with the back door stopped.

 

Timing Chart (Full Closed to Fully Open Operation): Case 1

Timing	Operation
	Buzzer operate (A pattern) and, back door closure motor starts the open operation.
	Open SW turns ON, and back door latch release operation completes.
	Half latch SW turns ON, and then back door closure motor performs reverse operation and returns to the neutral position.
	When close SW turns OFF, back door closure motor reverse operation stops, and then completes returning to the neutral position.

Timing Chart (Full Closed to Fully Open Operation): Case 2

Timing	Operation
	Buzzer operate (A pattern) and, back door closure motor starts the open operation.
	Half latch SW turns ON, and back door latch release operation completes.
	Open SW turns ON, and then back door closure motor performs reverse operation and returns to the neutral position.
	When close SW turns OFF, back door closure motor reverse operation stops, and then completes returning to the neutral position.

Timing Chart (Fully Open to Fully Closed Operation)

Timing	Operation
	Buzzer operate (A pattern) and, spindle motor starts the close operation.

CONTROL IF NOT WITHIN THE OPERATION CONDITIONS DURING THE OPERATION

If the back door is not within the operation conditions during the operation, the automatic back door control unit performs the control as follows.

Item (Condition)		Back door operation status
Power back door setting: ON→OFF		Operation stops
Operation condition release during the operation start announcement		Automatic back door function is not operating
Shift position: P position→other than P position		Open operation: Operation stops Close operation: Operation continues (once back door fully closed state is detected, automatic operation does not become available again until the shift position is shifted to P range)
Nissan Pathfinder Vehicle speed (0 km/h → More than 3 km/h)	Automatic open function operating	Operation stop [Back door fully closed or buzzer sounds until the Nissan Pathfinder vehicle stops (pattern B)]
	Automatic close function operating	The operation is continued [buzzer sounds (pattern B) until back door fully closed]
Malfunction detected (Power supply circuit, half latch switch, and back door condition)		Operation stops
Touch sensor circuit (Normal → Open)	Open operation	Operation stops
	Close operation	Operation stops
	Closure (close) operation	Closure closing operation, or warning buzzer operates (B pattern)
	Closure [open (return the latch to the neutral position)]	Operation continues

WARNING FUNCTION

The warning function is as follows and gives the user warning information using Intelligent Key warning buzzer.

Intelligent Key warning buzzer

Pattern		Description	Time
A		Operation start announcement	0.75 sec
B	Pi------••••••	The conditions are not satisfied in the fully open position or during the operation, and then the operation continues	Back door fully closed or Nissan Pathfinder vehicle is stopped
C		Calibration of automatic back door position information is complete Back door open position setting procedure is complete	2.5 sec
D		Anti-pinch operation start announcement	0.2 sec

BACK DOOR AUTO CLOSURE FUNCTION

Open Function

When back door opener switch is pressed and power back door setting in the OFF position, BCM transmits the back door open request signal to automatic back door control unit via CAN communication, and automatic back door control unit opens back door lock assembly.

Timing Chart (Open function): Case 1

Timing Chart (Open function): Case 2

Closure Function

When the back door is closed to the half-latch position, the motor drives to rotate the latch lever and pulls it in from half latched to fully latched and automatically closes the door. Then, the closure motor reverses to the neutral position.

Timing Chart (Closure Function)

ANTI-PINCH FUNCTION

• When pinching of foreign material is detected during the operation of automatic open/close function, the back door is operated in the reverse direction.

• The detection methods are the following two types.

1. Overload detection (detection by encoder)

   • When a drop in the operating speed is detected during the operation of the automatic open/close function, this is judged as pinching, and reverse operation operates.

   • If an overload by pinching or contact with foreign material is detected, reverse operation operates again. At this time, when the second overload is detected, automatic operation stops.

2. Pinching detection (detection by back door touch sensor)

   If the side part of the door pinches foreign material during the operation of automatic close function, the touch sensor detects this, and the door operates in the reverse direction. If a reverse operation is performed during driving, back door shifts to closing operation again. At this time, if the touch sensor detects foreign material in the closing direction for a second time, automatic operation stops.

• Automatic operation is stopped when one of the following conditions is detected after the first overload or pinching is detected.

  • Automatic back door switch: ON

  • Intelligent Key back door open button: ON

  • Automatic back door close switch: ON

  • Automatic back door lock and close switch: ON

  • Back door opener switch: ON

  • Hands free sensor: ON

  • Overload detection or pinching detection: second time

Operation Condition

Detection method		Encoder pulse	Touch sensor
Operation when any trapped foreign material is detected	Stop the Nissan Pathfinder vehicle	Buzzer sounds (pattern D) and reverse operation	Buzzer sounds (pattern D) and the back door stops in the fully-open position after reverse operation when automatic close function operating
	Running the Nissan Pathfinder vehicle	No reverse operation (buzzer sounds, pattern B)	Stop of the automatic close function
Number of allowable reverse operations		Perform the automatic open/close temporary stop function after 2 reverse operations regardless of the operation direction

Fail-safe

Display contents of CONSULT	Fail-safe
B2409–12: Half latch switch	Inhibit automatic back door system [only operate back door closure function (open function)]
B2409–14: Half latch switch	Manual latch and unlatch functions available only Inhibit automatic back door system [only operate back door closure function (open function)]
B2416–15: Touch sensor circuit RH open	Inhibit automatic back door system (only operate back door closure function)
B2417–15: Touch sensor circuit LH open
B2419–12: Open switch	Inhibit automatic back door system all function
B2419–14: Open switch
B2420–12: Close switch
B2420–14: Close switch
B2422–78: Back door position abnormal	Inhibit automatic back door system (only operate back door closure function)
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
B2428–44: Automatic back door control unit	Inhibit automatic back door system all function
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
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	Inhibit automatic back door system (only operate back door closure function)
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
U0075–00: Control module comm Bus C Off	Inhibit automatic back door system all function
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