power steering INFINITI QX56 2010 Factory User Guide

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
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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
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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

ADP-136
< ECU DIAGNOSIS >
AUTOMATIC DRIVE POSITIONER CONTROL UNIT
13 Y/GSeat memory switch indictor 2
signal Memory switch 2 ON
0
Memory switch 2 OFF Battery voltage
14 GR/R Mirror motor RH UP signal Mirror motor RH is operated UP
1.5 - Battery voltage
Other than above 0
15 V/R Mirror motor RH LEFT signal Mirror motor RH is operated LEFT
1.5 - Battery voltage
Other than above 0
16 O Mirror motor LH
DOWN signal Mirror motor LH is operated DOWN 1.5 - Battery voltage
Other than above
0
Mirror motor LH RIGHT signal Mirror motor LH is operated RIGHT 1.5 - Battery voltage
Other than above
0
17 G/B ADP steering switch TILT
DOWN ADP steering switch in DOWN posi-
tion
0
Other than above 5
18 BR/W Changeover switch LH signal Changeover switch in LH position
0
Other than above 5
19 SB Mirror switch DOWN signal Mirror switch in DOWN position
0
Other than above 5
20 GR Mirror switch RIGHT signal Mirror switch in RIGHT position
0
Other than above 5
21 L/W Mirror sensor (RH horizontal)
signal Mirror motor RH is operated LEFT or
RIGHT Changes between 3.4 (close to left
edge) 0.6 (close to right edge)
22 G Mirror sensor (LH horizontal)
signal Mirror motor LH is operated LEFT or
RIGHT Changes between 3.4 (close to left
edge) 0.6 (close to right edge)
24 G/O Seat memory set switch signal Set switch 1 ON
0
Set switch 1 OFF 5
25 P/L Seat memory switch 2 signal Memory switch 2 ON
0
Memory switch 2 OFF 5
26 W UART LINE (RX) Pedal adjusting switch ON (FOR-
WARD or BACKWARD operation)
30 Y Mirror motor RH DOWN signal
Mirror motor RH is operated DOWN 1.5 - Battery voltage
Other than above
0
Mirror motor RH RIGHT signal Mirror motor RH is operated RIGHT 1.5 - Battery voltage
Other than above
0
31 R Mirror motor LH UP signal Mirror motor LH is operated UP
1.5 - Battery voltage
Other than above 0
32 BR Mirror motor LH LEFT signal Mirror motor LH is operated LEFT
1.5 - Battery voltage
Other than above 0
33 W/L Sensor power supply —5
34 Y/R Battery power supply —Battery voltage
Te r m i n a l
Wire Col-
or Item
Condition Voltage (V)
(Approx.)
PIIA4814E
Revision: April 20092010 QX56

AUTOMATIC DRIVE POSITIONER CONTROL UNITADP-137
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35 R Tilt motor UP signal ADP steering switch in UP position Battery voltage
Other than above
0
37 G Pedal adjust motor FORWARD
signal Pedal adjust motor FORWARD op-
eration (Motor operated)
Battery voltage
Other than above 0
39 L/B Battery power supply —Battery voltage
40 B/W Ground —0
41 W/G Sensor ground —0
42 V Tilt motor DOWN signal ADP steering switch in DOWN posi-
tion
Battery voltage
Other than above 0
45 R Pedal adjust motor BACK-
WARD signal Pedal adjust motor BACKWARD op-
eration (Motor operated)
Battery voltage
Other than above 0
48 B Ground —0
Te r m i n a l
Wire Col-
or Item
Condition Voltage (V)
(Approx.)
Revision: April 20092010 QX56

ADP SYSTEM SYMPTOMSADP-169
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
ADP SYSTEM SYMPTOMS
Symptom TableINFOID:0000000005147586
NOTE:
Always perform the “Basic Inspection” before perfo rming diagnosis in the following table. Refer to ADP-5,
"Work Flow".
SYMPTOM 1
SYMPTOM 2
SYMPTOM 3
Symptom Diagnosis procedureReference
page
Manual functions (for specific part) do
not operate Sliding operation
Check sliding switch. ADP-50
Reclining operationCheck reclining switch. ADP-53
Lifting operation (front) Check lifting switch (front). ADP-56
Lifting operation (rear) Check lifting switch (rear).ADP-59
Pedal operation1. Check pedal adjusting switch.
ADP-652. Check pedal adjusting sensor.ADP-91
Steering wheel tilt operation Check ADP steering switch ADP-62
Door mirror operation1. Changeover switch.
ADP-702. Mirror switchADP-72
All parts of seatCheck power seat switch ground cir-
cuit. ADP-76
Symptom
Diagnosis procedureReference
page
Memory functions (for specific part) do
not operate Sliding operation
Check sliding sensor. ADP-81
Reclining operationCheck reclining sensor. ADP-83
Lifting operation (front) Check lifting sensor (front). ADP-85
Lifting operation (rear) Check lifting sensor (rear).ADP-87
Pedal operationCheck pedal adjusting sensor. ADP-91
Steering wheel tilt operation Check tilt sensor ADP-89
Door mirror operation Check door mirror sensor. Driver side:
ADP-93Passenger side:
ADP-95
Symptom Diagnosis procedureReference
page
Memory functions and manual func-
tions (for specific part) do not operate Sliding operation
Check sliding motor. ADP-97
Reclining operationCheck reclining motor. ADP-99
Lifting operation (front) Check lifting motor (front). ADP-101
Lifting operation (rear) Check lifting motor (rear).ADP-103
Pedal operationCheck pedal adjusting motor. ADP-107
Steering wheel operation Check tilt motor ADP-105
Door mirror operation Check door mirror motor.ADP-109
Revision: April 20092010 QX56

ADP-172
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005250374
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000005250375
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
Revision: April 20092010 QX56