2010 INFINITI QX56 power steering

ADP-18
< FUNCTION DIAGNOSIS >
AUTOMATIC DRIVE POSITIONER SYSTEM
INPUT PARTS
Switches
Sensors
OUTPUT PARTS
MEMORY FUNCTION
Automatic drive positioner control unitOperates the specific motor with the signal from driver seat control unit, ADP steer-
ing switch or door mirror remote control switch.
BCM Recognizes the following status and transmits it to the driver seat control unit via
CAN communication.
• Ignition position: ACC/ON
Item
Function
Item Function
Power seat switch The following switch is installed.
• Reclining switch
• Lifting switch (front)
• Lifting switch (rear)
• Sliding switch
The specific parts can be operated with the operation of each switch.
Pedal adjusting switch The following switch is installed.
• Pedal forward
• Pedal backward
The specific parts can be operated with the operation of each switch.
ADP steering switch The following switch is installed.
• Steering wheel upward
• Steering wheel downward
The specific parts can be operated with the operation of each switch.
Door mirror remote control switch The following switch is installed.
• Mirror switch
• Changeover switch
The specific parts can be operated with the operation of each switch.
Item
Function
Pedal adjusting sensor Detect the forward/backward position of pedal assembly.
Tilt sensor Detect the upward/downward position of steering wheel.
Item Function
Door mirror motor (LH/RH) Move the outside mirror face upward/downward and left/right.
Pedal adjusting motor Move the pedal assembly forward/backward.
Tilt motor Move the steering wheel upward/downward.
Lifting motor (front) Move the seat lifter (front) upward/downward.
Lifting motor (rear) Move the seat lifter (rear) upward/downward.
Reclining motor Tilt and raise up the seatback.
Sliding motor Slide the seat forward/backward.
Revision: April 20092010 QX56

AUTOMATIC DRIVE POSITIONER SYSTEMADP-19
< FUNCTION DIAGNOSIS >
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ADP
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MEMORY FUNCTION : System DiagramINFOID:0000000005147433
MEMORY FUNCTION : System DescriptionINFOID:0000000005147434
OUTLINE
The driver seat control unit can store the optimum driving positions (seat, pedal assembly, steering wheel and
door mirror position) for 2 people. If the front seat position is changed, one-touch (pressing desired memory
switch for more than 0.5 second) operation al lows changing to the other driving position.
NOTE:
Further information for the memory storage procedure. Refer to Owner’s Manual.
OPERATION PROCEDURE
1. Turn ignition switch ON.
2. Press desired memory switch for more than 0.5 second.
3. Front seat LH, pedal assembly, steering wheel and door mirror will move to the memorized position.
OPERATION CONDITION
Satisfy all of the following items. The memory func tion is not performed if these items are not satisfied.
DETAIL FLOW
ALJIA0237GB
Item Request status
Ignition position ON
Switch inputs
• Power seat switch
• Pedal adjusting switch
• ADP steering switch
• Door mirror control switch
• Set switch
• Seat memory switch OFF
(Not operated)
A/T selector lever P position
Revision: April 20092010 QX56

AUTOMATIC DRIVE POSITIONER SYSTEMADP-21
< FUNCTION DIAGNOSIS >
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MEMORY FUNCTION : Component DescriptionINFOID:0000000005147436
CONTROL UNITS
INPUT PARTS
Switches
Sensors
OUTPUT PARTS
1. A. Automatic drive positioner control unit M33, M34
B. Pedal adjusting motor assembly
E109, E110 2. A. Steering column
B. Key switch and ignition knob
switch M12
C. BCM M18, M19, M20 (view with
instrument panel removed) 3. A. Door mirror remo
te control switch
D10
B. Seat memory switch D5
4. Pedal adjusting switch M96 5 . A. Door mirrror LH D4, RH D107
B. Front door switch LH B 6. A. A/T selector lever
B. A/T shift selector (park position
switch) M203
7. A. Sliding motor LH B204 (driver seat view), reclining motor LH B205, lift-
ing motor (front) B2 06, lifting motor
(rear) B207
B. Driver seat control unit B202,
B203
C. Power seat switch LH B208 8. A. ADP steering switch M16
B. Tilt sensor M85 and tilt motor M86
Item Function
Driver seat control unit • The address of each part is recorded.
• Operates each motor of seat to the registered position.
• Requests the operations of pedal assembly and door mirror to automatic drive po-
sitioner control unit.
Automatic drive positioner control unit Operates the pedal adjusting motor, tilt motor and door mirror with the instructions
from the driver seat control.
Item
Function
Memory switch 1/2 The registration and memory function can be performed with its operation.
Item Function
Door mirror sensor (LH/RH) Detect the up/down and left/right position of outside mirror face.
Pedal adjusting sensor Detect the forward/backward position of pedal assembly.
Tilt sensor Detect the upward/downward position of steering wheel.
Lifting sensor (front) Detect the up/down position of seat lifting (front).
Lifting sensor (rear) Detect the up/down position of seat lifting (rear).
Reclining sensor Detect the tilt of seatback.
Sliding sensor Detect the front/rear position of seat.
Item Function
Door mirror motor (LH/RH) Move the outside mirror face upward/downward and left/right.
Pedal adjusting motor Move the pedal assembly forward/backward.
Tilt motor Move the steering wheel upward/downward.
Lifting motor (front) Move the seat lifter (front) upward/downward.
Lifting motor (rear) Move the seat lifter (rear) upward/downward.
Reclining motor Tilt and raise up the seatback.
Revision: April 20092010 QX56

AUTOMATIC DRIVE POSITIONER SYSTEMADP-23
< FUNCTION DIAGNOSIS >
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DETAIL FLOW
EXIT ASSIST FUNCTION : Component Parts LocationINFOID:0000000005370291
Switch inputs
• Power seat switch
• Pedal adjusting switch
• ADP steering switch
• Door mirror remote control switch
• Set switch
• Seat memory switch OFF
(Not operated)
A/T selector lever P position
Item
Request status
OrderInput Output Control unit condition
1 Front door switch LH —Driver seat control unit receives front door switch LH signal (open)
from BCM via CAN communication.
2— Motors (seat sliding,
tilt)Driver seat control unit operates the seat sliding motor, which recog-
nizes that the front door LH is opened with ignition switch OFF. Driv-
er seat control unit then requests the operation of the tilt motor to the
automatic drive positioner control unit via UART communication.
The automatic drive positioner control unit operates the motor for a
constant amount.
ALJIA0347ZZ
Revision: April 20092010 QX56

ADP-24
< FUNCTION DIAGNOSIS >
AUTOMATIC DRIVE POSITIONER SYSTEM
EXIT ASSIST FUNCTION : Component Description
INFOID:0000000005147440
CONTROL UNITS
INPUT PARTS
Switches
Sensors
OUTPUT PARTS
ENTRY ASSIST FUNCTION
1. A. Automatic drive positioner control unit M33, M34
B. Pedal adjusting motor assembly
E109, E110 2. A. Steering column
B. Key switch and ignition knob
switch M12
C. BCM M18, M19, M20 (view with
instrument panel removed) 3. A. Door mirror remo
te control switch
D10
B. Seat memory switch D5
4. Pedal adjusting switch M96 5 . A. Door mirrror LH D4, RH D107
B. Front door switch LH B 6. A. A/T selector lever
B. A/T shift selector (park position
switch) M203
7. A. Sliding motor LH B204 (driver seat
view), reclining motor LH B205, lift-
ing motor (front) B206, lifting motor
(rear) B207
B. Driver seat control unit B202,
B203
C. Power seat switch LH B208 8. A. ADP steering switch M16
B. Tilt sensor M85 and tilt motor M86
Item Function
Driver seat control unit • Operates the seat sliding motor for a constant amount.
• Driver seat control unit requests the operation of the tilt motor to the automatic
drive positioner control unit via UART communication.
Automatic drive positioner control unit Operates the tilt motor for a constant amount.
BCM Recognizes the following status and transmits it to the driver seat control unit via
CAN communication.
• Front door LH: OPEN/CLOSE
Item
Function
Front door switch LH Detect front door LH open/close status.
Item Function
Sliding sensor Detect the front/rear position of seat.
Tilt sensor Detect the up/down position of steering wheel.
Item Function
Sliding motor Slide the seat forward/backward.
Tilt motor Moves the steering wheel upward/downward.
Revision: April 20092010 QX56

AUTOMATIC DRIVE POSITIONER SYSTEMADP-25
< FUNCTION DIAGNOSIS >
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ADP
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ENTRY ASSIST FUNCTION : System DiagramINFOID:0000000005147441
ENTRY ASSIST FUNCTION : System DescriptionINFOID:0000000005147442
OUTLINE
The seat and steering wheel are in the exiting position when either following condition (A or B) is satisfied, the
seat and steering wheel return from exiting position to the previous driving position.
NOTE:
• This function is set to OFF before delivery (initial setting).
• Further information for the system setting procedure. Refer to Owner’s Manual.
OPERATION PROCEDURE
1. A: Turn the ignition switch ON. B: Turn the ignition switch from OFF to ACC after closing the driver door.
2. Front seat LH and steering wheel will return from the exiting position to entry position.
OPERATION CONDITION
Satisfy all of the following items. The entry assist function is not performed if t hese items are not satisfied.
DETAIL FLOW
ALJIA0238GB
ItemRequest status
Seat, steering wheel The vehicle is not moved after performing the
exit assist function.
Switch inputs
• Power seat switch
• Pedal adjusting switch
• ADP steering switch
• Door mirror control switch
• Set switch
• Memory switch OFF
(Not operated)
A/T selector lever P position
Revision: April 20092010 QX56

ADP-26
< FUNCTION DIAGNOSIS >
AUTOMATIC DRIVE POSITIONER SYSTEM
ENTRY ASSIST FUNCTION : Component Parts Location
INFOID:0000000005370292
Order Input Output Control unit condition
1 Door switch/Ignition
switch —
Driver seat control unit receives the signals of ignition switch signal
and front door switch from BCM via CAN communication.
2 —
Motors (sliding, tilt) Driver seat control unit operates the sliding motor when the operating
conditions are satisfied. Driver seat control unit then requests the op-
eration of the tilt motor to the automatic drive positioner control unit
via UART communication. The automatic drive positioner control unit
operates the motor for a constant amount.
Sensors (sliding, tilt) —Sensors monitor the operating positions of seat and steering wheel
and then stops the operation of each motor when each part reaches
the recorded address.
ALJIA0347ZZ
1. A. Automatic drive positioner control
unit M33, M34
B. Pedal adjusting motor assembly
E109, E110 2. A. Steering column
B. Key switch and ignition knob
switch M12
C. BCM M18, M19, M20 (view with
instrument panel removed) 3. A. Door mirror remo
te control switch
D10
B. Seat memory switch D5
4. Pedal adjusting switch M96 5 . A. Door mirrror LH D4, RH D107
B. Front door switch LH B 6. A. A/T selector lever
B. A/T shift selector (park position
switch) M203
7. A. Sliding motor LH B204 (driver seat
view), reclining motor LH B205, lift-
ing motor (front) B206, lifting motor
(rear) B207
B. Driver seat control unit B202,
B203
C. Power seat switch LH B208 8. A. ADP steering switch M16
B. Tilt sensor M85 and tilt motor M86
Revision: April 20092010 QX56

ADP-38
< COMPONENT DIAGNOSIS >
B2118 TILT SENSOR
B2118 TILT SENSOR
DescriptionINFOID:0000000005147465
• The tilt sensor is installed to the steering column assembly.
• 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 tiltsensor resistance. Automatic drive positioner control unit calculates the tilt position from the voltage.
DTC LogicINFOID:0000000005147466
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1. STEP 1
Turn ignition switch ON.
>> GO TO 2
2. STEP 2
Check “Self diagnostic result” with CONSULT-III.
Is the DTC detected?
YES >> Perform diagnosis procedure. Refer to ADP-38, "DiagnosisProcedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000005147467
Regarding Wiring Diagram information, refer to ADP-138, "Wiring Diagram".
1. CHECK TILT SENSOR SIGNAL
1. Turn ignition switch ON.
2. Select “TILT SEN” in “Data m onitor” mode with CONSULT-III.
3. Check tilt sensor signal under the following condition.
Is the value normal?
YES >> GO TO 4
NO >> GO TO 2
2. CHECK FUNCTION
DTC No. Trouble diagnosis
name DTC detecting condition
Possible cause
B2118 TILT SENSOR The input voltage of tilt sensor is 0.1V or less or 4.9V
or more. • Harness and connectors
(Tilt sensor circuit is opened/
shorted, tilt sensor power supply
circuit is opened/shorted.)
• Tilt sensor
Monitor item Condition Value
TILT SEN Tilt position To p
2 V
Bottom 4 V
Revision: April 20092010 QX56