2011 INFINITI QX56 Back door

COMPONENT PARTSADP-7
< SYSTEM DESCRIPTION >
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Component DescriptionINFOID:0000000006248302
7. ABS actuator and electric unit (con- trol unit)
Refer to BRC-10, "
Component Parts
Location" (With VDC) or BRC-142,
"Component Parts Location" (With
BRAKE ASSIST) or BRC-149,
"Component Parts Location" (With
INTELLIGENT BRAKE ASSIST) 8. Door mirror remote
control switch 9. Seat memory switch
10. Sliding, lifting switch 11. Reclining switch 12. Driver side door switch
13. Door mirror (driver side) 14. T ilt motor 15. Telescopic motor
16. Automatic drive positioner control unit 17. Lifting motor (rear) 18.
Diver seat control unit
19. Lifting motor (front) 20. Sliding motor 21. Reclining motor
A. View with steering column cover low- er removed B. View with instrument lower panel LH
removed C. View with seat cushion pad and seat
back pad removed
D. Backside of seat cushion E. View with seat cushion pad and seat back pad removed
Component parts Description
Driver seat control unit  Main units of automatic drive positioner system.
 It is connected to the CAN.
 It communicates with automatic drive positioner control unit via
UART communication.
 It perform memory function after receiving the door unlock signal
from BCM.
 The address of each part is recorded.
 Operates each motor of seat to the registered position.
 Requests the operation of steering column and door mirror to automatic drive positioner control unit
 Operates the specific seat motor with the signal from power seat
switch.
 Transmits the ignition switch signal (ACC/ON) via UART com- munication to automatic driver positioner control unit.
Automatic drive positioner control unit  It communicates with driver seat control unit via UART commu-
nication.
 Perform various controls with the instructions of driver seat con- trol unit.
 Perform the controls of tilt & telescopic, door mirror and seat memory switch.
 Operates steering column and door mirror with the signal from the driver seat control
BCM Recognizes the following status and transmits it to driver seat con-
trol unit via CAN communication.
 Handle position: LHD
 Driver door: OPEN/CLOSE
 Ignition switch position: ACC/ON
 Steering lock unit status: LOCK/UNLOCK
 Door lock: UNLOCK (with Intelligent key or driver side door re-
quest switch operation)
Key ID
 Starter: CRANKING/OTHER
IPDM E/R ON/OFF signal of A/T shift selector (detention switch) is transmit-
ted to driver seat control unit via CAN communication.
TCM The following signals are transmitted to driver seat control unit via
CAN communication.
 Shift position signal (P range)
 Identification of transmission: A/T
Unified meter and A/C amp. Transmit the vehicle speed signal to driver seat control unit via
CAN communication.
Revision: 2010 May2011 QX56

COMPONENT PARTSADP-9
< SYSTEM DESCRIPTION >
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Door mirror (driver side/
passenger side) Door mirror motor
It makes mirror face operate from side to side and up and down
with the electric power that automatic drive positioner control unit
supplies.
Mirror sensor  Mirror sensor is inst
alled to door mirror.
 The resistance of 2 sensors (horizontal and vertical) is changed when door mirror is operated.
 Automatic drive positioner control unit calculates door mirror po- sition according to the change of the voltage of 2 sensor input
terminals.
Tilt motor Tilt motor
 Tilt motor is installed to steering column assembly.
 Tilt motor is activated with automatic drive positioner control unit.
 Steering column is tilted upward/downward by changing the ro-
tation direction of tilt motor.
Tilt sensor  Tilt sensor is integrated in tilt motor.
 The resistance of tilt sensor is changed according to the up/
down position of steering column.
 The terminal voltage of automatic drive positioner control unit
will be changed according to a change of tilt sensor resistance.
 Automatic drive positioner control unit calculates the tilt position from the voltage.
Telescopic motor Te l e s c o p i c m o t o r
 Telescopic motor is installed to steering column assembly.
 Telescopic motor is activated with automatic drive positioner
control unit.
 Compresses steering column by changing the rotation direction
of telescopic motor.
Telescopic sensor  Telescopic sensor is integrated in telescopic motor.
 The resistance of telescopic sensor is changed according to the
forward/backward position of steering column.
 The terminal voltage of automatic drive positioner control unit will be changed according to a change of telescopic sensor re-
sistance.
 Automatic drive positioner control unit calculates the telescopic position from the voltage.
Sliding motor Sliding motor
 Seat sliding motor is installed to the seat cushion frame.
 Seat sliding motor is activated with driver seat control unit.
 Slides the seat frontward/ rearward by changing the rotation di-
rection of sliding motor.
Sliding sensor  Sliding sensor is integrated in sliding motor.
 The pulse signal is input to driver seat control unit when sliding
is performed.
 Driver seat control unit counts the pulse and calculates the slid- ing amount of the seat.
Reclining motor Reclining motor
 Seat reclining motor is installed to seat back frame.
 Seat reclining motor is activated with driver seat control unit.
 Seatback is reclined frontward/rearward by changing the rota-
tion direction of reclining motor.
Reclining sensor  Reclining sensor is integrated in reclining motor.
 The pulse signal is input to driver seat control unit when the re-
clining is operated.
 Driver seat control unit counts the pulse and calculates the re- clining amount of the seat.
Lifting motor (front) Lifting motor (front)
 Lifting motor (front) is installed to seat side cushion frame.
 Lifting motor is activated with driver seat control unit.
 Seat lifter (front) is moved upward/downward by changing the
rotation direction of lifting motor (front).
Lifting sensor (front)  Lifting sensor (front) is inst
alled in lifting motor (rear).
 When lifting motor (rear) operates, pulse signal is transmitted to driver seat control unit from lifting sensor. Driver seat control unit
counts the pulse and calculates the lift position (rear) of the seat.
Component parts Description
Revision: 2010 May2011 QX56

ADP-12
< SYSTEM DESCRIPTION >
SYSTEM
NOTE:
The lumbar support system are controlled independently with no link to the automatic drive positioner system.
Refer to SE-16, "
LUMBAR SUPPORT SYSTEM : System Description".
Sleep control
Driver seat control unit equips sleep control for reducing power consumption.
The system switches to sleep control when al l of the following conditions are satisfied.
 Ignition switch is OFF (steering lock status).
 All devices of auto driving pos ition system are not operating.
 45 seconds timer of driver s eat control unit is not operating.
 Set switch and memory switch (1 and 2) are OFF.
Wake-up control
Sleep control releases when detecting status change in either of the following item.
 CAN communication
 Power seat switch
 Set switch and seat memory switch (1 and 2)
 Tilt & telescopic switch
MANUAL FUNCTION
Function Description
Manual function The driving position (seat, steering column and door mirror position) can be adjusted
by using the power seat switch, tilt & telescopic switch or door mirror remote control
switch.
Memory function The seat, steering column and door mirror move to the stored driving position by
pressing seat memory switch (1 or 2).
Entry/Exit assist function Exit On exit, the seat moves backward and the steering column moves upward.
Entry
On entry, the seat and steering column returns from exiting position to the previous
driving position.
Intelligent Key interlock function Perform memory operation, exiting operation and entry operation by Intelligent Key
unlock operation or driver side door request switch unlock operation.
Revision: 2010 May2011 QX56

SYSTEMADP-17
< SYSTEM DESCRIPTION >
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EXIT ASSIST FUNCTION
EXIT ASSIST FUNCTION : System DiagramINFOID:0000000006248309
EXIT ASSIST FUNCTION : System DescriptionINFOID:0000000006248310
 When exiting, the condition is satisfied, the seat is moved backward 40 mm (1.57 in) from normal sitting
position and the steering is moved to the most upper position.
 The seat slide amount and the steering oper ation at entry/exit operation can be changed.
NOTE:
 This function is set to ON before delivery (initial setting).
 Further information for the system setting procedure. Refer to ADP-54, "
SYSTEM SETTING : Description".
OPERATION PROCEDURE
1. Shift position P position.
2. Open the driver door with ignition switch in OFF position.
3. Driver seat and steering column will move to the exiting position.
OPERATION CONDITION
Satisfy all of the following items. The exit assist function is not performed if these items are not satisfied.
JMJIA3776GB
Item Request status
Ignition position OFF
System setting [Entry/exit assist function (seat/steering)] ON
Initialization Done
Switch inputs
 Power seat switch
 Tilt & telescopic switch
 Door mirror remote control switch
 Set switch
 Memory switch OFF
(Not operated)
A/T shift selector P position
Handle position LHD
Revision: 2010 May2011 QX56

DIAGNOSIS SYSTEM (DRIVER SEAT CONTROL UNIT)
ADP-23
< SYSTEM DESCRIPTION >
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TELESCO SW-FR “ON/OFF” ××ON/OFF status judged from the telescoping switch (for-
ward) signal.
TELESCO SW-RR “ON/OFF” ××ON/OFF status judged from the telescoping switch (back-
ward) signal.
MIR CON SW–UP “ON/OFF” ××ON/OFF status judged from the mirror switch (up) signal.
MIR CON SW–DN “ON/OFF” ××ON/OFF status judged from the mirror switch (down) signal.
MIR CON SW–RH “ON/OFF” ××ON/OFF status judged from the door mirror remote control
switch (passenger side) signal.
MIR CON SW–LH “ON/OFF” ××ON/OFF status judged from the door mirror remote control
switch (driver side) signal.
MIR CHNG SW–R “ON/OFF” ××ON/OFF status judged from the door mirror remote control
switch (switching to right) signal.
MIR CHNG SW–L “ON/OFF” ××ON/OFF status judged from the door mirror remote control
switch (switching to left) signal.
VEHICLE SPEED — ××Display the vehicle speed signal received from combination
meter by numerical value [km/h].
P RANG SW CAN “ON/OFF” ××ON/OFF status judged from the P range switch signal.
R RANGE (CAN) “ON/OFF” ××ON/OFF status judged from the R range switch signal.
DOOR SW–FL “ON/OFF” ××ON/OFF status judged from the door switch (front driver
side) signal.
DOOR SW–FR “ON/OFF” ××ON/OFF status judged from the door switch (front passen-
ger side) signal.
IGN ON SW “ON/OFF” ××ON/OFF status judged from the ignition switch signal.
ACC ON SW “ON/OFF” ××ON/OFF status judged from the ACC switch signal.
KEY ON SW “ON/OFF” ××ON/OFF status judged from the key on switch signal.
KEYLESS ID — ××Key ID status judged from the key ID signal.
KYLS DR UNLK “ON/OFF” ××ON/OFF status judged from the driver side door unlock ac-
tuator output switch signal.
VHCL SPEED (ABS) “ON/OFF” ××ON/OFF status judged from vehicle speed signal.
HANDLE “RHD/LHD” ××RHD/LHD status judged from handle position signal.
TRANSMISSION “AT or CVT/
MT” ××
AT or CVT/MT status judged from transmission.
SLIDE PULSE — – ×Value (32768) when battery connections are standard. If it
moves backward, the value increases. If it moves forward,
the value decreases.
RECLN PULSE — – ×Value (32768) when battery connections are standard. If it
moves backward, the value increases. If it moves forward,
the value decreases.
LIFT FR PULSE — – ×Value (32768) when battery connections are standard. If it
moves DOWN, the value increases. If it moves UP, the val-
ue decreases.
LIFT RR PULSE — – ×Value (32768) when battery connections are standard. If it
moves DOWN, the value increases. If it moves UP, the val-
ue decreases.
MIR/SEN RH U–D “V” – ×Voltage input from door mirror sensor (passenger side) up/
down is displayed.
MIR/SEN RH R–L “V” – ×Voltage input from door mirror sensor (passenger side) left/
right is displayed.
MIR/SENLHU–D “V” – ×Voltage input from door mirror
sensor (driver side) up/down
is displayed.
Monitor Item Unit
Main
Signals Selection
From
Menu Contents
Revision: 2010 May2011 QX56

ADP-24
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (DRIVER SEAT CONTROL UNIT)
ACTIVE TEST
CAUTION:
When driving vehicle, do not perform active test.
WORK SUPPORT
MIR/SEN LH R–L “V” –×Voltage input from door mirror sensor (driver side) left/right
is displayed.
TILT PULSE — – ×Value (32768) when battery connections are standard. If it
moves DOWN, the value increases. If it moves UP, the val-
ue decreases.
TELESCO PULSE — – ×Value (32768) when battery connections are standard. If it
moves backward, the value increases. If it moves forward,
the value decreases.
Monitor Item Unit
Main
Signals Selection
From
Menu Contents
Test item Description
SEAT SLIDE Activates/deactivates the sliding motor.
SEAT RECLINING Activates/deactivates the reclining motor.
SEAT LIFTER FR Activates/deactivates the lifting motor (front).
SEAT LIFTER RR Activates/deactivates the lifting motor (rear).
TILT MOTOR Activates/deactivates the tilt motor.
TELESCO MOTOR Activates/deactivates the telescopic motor.
MIRROR MOTOR RH Activates/deactivates the mirror motor (passenger side).
MIRROR MOTOR LH Activates/deactivates the mirror motor (driver side).
MEMORY SW INDCTR Turns ON/O FF the memory indicator.
Work item Content Item
SEAT SLIDE VOLUME SET The amount of seat sliding for entry/exit assist can be selected
from 3 items. 40 mm
80 mm
150 mm
EXIT TILT SETTING Entry/exit assist (steering column) can be selected:
ON (operated) – OFF (not operated) ON
OFF
EXIT SEAT SLIDE SETTING Entry/exit assist (seat) can be selected:
ON (operated) – OFF (not operated) ON
OFF
Revision: 2010 May2011 QX56

ADP-26
< ECU DIAGNOSIS INFORMATION >
DRIVER SEAT CONTROL UNIT
TELESCO SW-FR Telescopic switchForward ON
Other than the above OFF
TELESCO SW-RR Telescopic switch Backward ON
Other than the above OFF
DETENT SW A/T shift selector P position OFF
Other than the above ON
STARTER SW Ignition position Cranking ON
Other than the above OFF
SLIDE PULSE Seat sliding Forward The numeral value decreases *
Backward The numeral value increases*
Other than the above No change to numeral value*
RECLN PULSE Seat reclining Forward The numeral value decreases*
Backward
The numeral value increases
*
Other than the above
No change to numeral value*
LIFT FR PULSE Seat lifter (front) Up
The numeral value decreases
*
Down The numeral value increases *
Other than the above
No change to numeral value*
LIFT RR PULSE Seat lifter (rear) Up
The numeral value decreases
*
Down The numeral value increases *
Other than the above No change to numeral value*
MIR/SEN RH U–D Door mirror (passenger side) Change between 3.4 (close to peak)
0.6 (close to valley)
MIR/SEN RH R–L Door mirror (passenger side) Change between 3.4 (close to left edge)
0.6 (close to right edge)
MIR/SEN LH U–D Door mirror (driver side) Change between 3.4 (close to peak)
0.6 (close to valley)
MIR/SEN LH R–L Door mirror (driver side) Change between 0.6 (close to left edge)
3.4 (close to right edge)
TILT PULSE Tilt position Upward
The numeral value decreases
*
Downward The numeral value increases *
Other than the above
No change to numeral value*
TELESCO PULSE Telescopic position Forward
The numeral value decreases
*
Backward The numeral value increases *
Other than the above
No change to numeral value*
STEERING STATUS Steering lock unit LOCK LOCK
unlock UNLOCK
VEHICLE SPEED The condition of vehicle speed is displayed km/h
P RANG SW CAN A/T shift selector P position ON
Other than the above OFF
R RANGE (CAN) A/T shift selector R position ON
Other than the above OFF
DOOR SW-FL Driver door Open ON
Close OFF
Monitor Item Condition Value/Status
Revision: 2010 May2011 QX56

ADP-30
< ECU DIAGNOSIS INFORMATION >
DRIVER SEAT CONTROL UNIT
Fail Safe
INFOID:0000000006248318
The fail-safe mode may be activated if the following symptoms are observed.
33
(R) Ground Battery power supply Input — Battery voltage
34
(B) Ground Sliding motor back-
ward output signal Output Seat sliding Operate
(backward)
12
Other than the
above 0
35
(G) Ground
Reclining motor for-
ward output signal Output Seat reclining Operate
(forward)
12
Other than the
above 0
36
(L) Ground Lifting motor (front)
down output signal
Output Seat lifting (front) Operate
(down)
12
Other than the
above 0
38
(GR) Ground Sliding motor forward
output signal Output Seat sliding Operate
(forward)
12
Other than the
above 0
39
(Y) Ground
Reclining motor back-
ward output signal Output Seat reclining Operate
(backward)
12
Other than the
above 0
40
(W) Ground Lifting motor (front) up
output signal
Output Seat lifting (front) Operate
(up)
12
Other than the
above 0
41
(V) Ground Lifting motor (rear) up
output signal Output Seat lifting (rear) Operate
(up)
12
Other than the
above 0
42
(P/B) Ground
Lifting motor (rear)
down output signal Output Seat lifting (rear) Operate
(down)
12
Other than the
above 0
43
(LG) Ground Ground — — 0
Operating in
fail-safe mode Malfunction ItemRelated
DTC Diagnosis
Only manual functions operate normally. CAN communication U1000
ADP-56
CONTROL UNIT U1010ADP-57
EEPROM B2130ADP-66
Only manual functions, except door mirror, operate normally. UART communication B2128 ADP-64
Only manual functions, except seat sliding, operate normally. Seat sliding output B2112ADP-58
Only manual functions, except seat reclining, operate normally. Seat reclining output B2113ADP-60
Only manual functions, except steering tilt, operate normally. Steering column tilt output B2116ADP-62
Revision: 2010 May2011 QX56