2009 INFINITI QX56 power steering

AUTOMATIC DRIVE POSITIONER CONTROL UNITADP-129
< ECU DIAGNOSIS >
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13 Y/G Seat 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: December 20092009 QX56

ADP-130
< ECU DIAGNOSIS >
AUTOMATIC DRIVE POSITIONER CONTROL UNIT
35 R Tilt motor UP signalADP 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: December 20092009 QX56

ADP SYSTEM SYMPTOMSADP-159
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
ADP SYSTEM SYMPTOMS
Symptom TableINFOID:0000000003775657
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 procedure Reference
page
Manual functions (for specific part) do
not operate Sliding operation Check sliding switch.
ADP-49
Reclining operation Check reclining switch.ADP-51
Lifting operation (front) Check lifting switch (front).ADP-53
Lifting operation (rear) Check lifting switch (rear).ADP-55
Pedal operation1. Check pedal adjusting switch.
ADP-592. Check pedal adjusting sensor.ADP-84
Steering wheel tilt operation Check ADP steering switch ADP-57
Door mirror operation1. Changeover switch.
ADP-642. Mirror switchADP-66
All parts of seatCheck power seat switch ground cir-
cuit. ADP-69
Symptom Diagnosis procedure Reference
page
Memory functions (for specific part) do
not operate Sliding operation Check sliding sensor.
ADP-74
Reclining operation Check reclining sensor.ADP-76
Lifting operation (front) Check lifting sensor (front).ADP-78
Lifting operation (rear) Check lifting sensor (rear).ADP-80
Pedal operation Check pedal adjusting sensor.ADP-84
Steering wheel tilt operation Check tilt sensorADP-82
Door mirror operation Check door mirror sensor. Driver side:
ADP-86Passenger side:
ADP-88
Symptom Diagnosis procedure Reference
page
Memory functions and manual func-
tions (for specific part) do not operate Sliding operation Check sliding motor.
ADP-90
Reclining operation Check reclining motor.ADP-92
Lifting operation (front) Check lifting motor (front).ADP-94
Lifting operation (rear) Check lifting motor (rear).ADP-96
Pedal operation Check pedal adjusting motor.ADP-100
Steering wheel operation Check tilt motor ADP-98
Door mirror operation Check door mirror motor.ADP-102
Revision: December 20092009 QX56

ADP-162
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005848468
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 severi ty 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 NISS AN/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 harnesses can be identi fied 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:0000000005851835
NOTE:
 This Procedure is applied only to models with Intelli gent 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: December 20092009 QX56

AV-12
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
AUDIO SYSTEM
Component Description
INFOID:0000000003776771
10. Rear audio remote control unit R204 11. Microphone R109 12. Front door speaker
LH D12
RH D112
13. Rear door tweeter LH D208
RH D308 14. Rear door speaker
LH D207
RH D307 15. Back door speaker
LH D518
RH D716
16. Subwoofer B72 (under driver’s seat) 17. BOSE speaker amp M112, M113 (view behind instrument panel above
accelerator pedal)18. Rear view camera control unit B73
(located behind luggage finisher LHl)
19. Rear view camera D504
Part name Description
AV control unit Controls audio system, NAVI functions and satellite radio system functions
Display unit • Touch screen controls all audio and A/C operations
• Displays all audio and climate control related information
BOSE speaker amp. Receives power (amp ON) and audio signals from AV control unit and out-
puts audio signals to each speaker.
Steering switches • Audio operation can be operated
• Steering switch signal is output to AV control unit
Front door speakers • Outputs audio signal from BOSE speaker amp.
• Outputs high, mid and low range sounds
Front tweeters • Outputs audio signal from BOSE speaker amp.
• Outputs high range sounds
Center speaker • Outputs audio signal from BOSE speaker amp.
• Outputs high range sounds
Rear door speakers • Outputs audio signal from BOSE speaker amp.
• Outputs high, mid and low range sounds
Rear door tweeters • Outputs audio signal from BOSE speaker amp.
• Outputs high range sounds
Back door speakers • Outputs audio signal from BOSE speaker amp.
• Outputs high, mid and low range sounds
Subwoofer • Outputs audio signal from BOSE speaker amp.
• Outputs low range sounds
Satellite antenna Audio signal (satellite radio) is received and output to AV control unit.
Revision: December 20092009 QX56

AV-24
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
HANDS-FREE PHONE SYSTEM
HANDS-FREE PHONE SYSTEM
System DiagramINFOID:0000000003776784
System DescriptionINFOID:0000000003776785
Refer to the Owner's Manual for Bluetoot
h telephone system operating instructions.
NOTE:
Cellular telephones must have their wireless connection set up (paired) before using the Bluetooth telephone
system.
Bluetooth telephone system allows users who have a Bluetooth equipped cellular telephone to make a wire-
less connection between their cellular telephone and the AV control unit. Hands-free cellular telephone calls
can be sent and received. Personal memos can be created using the Nissan Voice Recognition system. Some
Bluetooth cellular telephones may not be recognized by t he AV control unit. When a cellular telephone or the
AV control unit is replaced, the telephone must be pair ed with the AV control unit. Different cellular telephones
may have different pairing procedures. Refer to the cellular telephone operating manual and the vehicle
Owner’s Manual for more information.
AV CONTROL UNIT
When the ignition switch is turned to ACC or ON, the AV control unit will power up. During power up, the Blue-
tooth feature is initialized and performs various self checks. Initialization may take up to 10 seconds. If a
phone is present in the vehicle and paired with the AV control unit, Nissan Voice Recognition will then become
active. Bluetooth telephone functions can be turned off using the Nissan Voice Recognition system.
STEERING WHEEL AUDIO CONTROL SWITCHES
When buttons on the steering wheel audio control switch are pushed, the resistance in steering wheel audio
control switch circuit changes depending on which button is pushed. The AV control unit uses this signal to
perform various functions while navigati ng through the voice recognition system.
The following functions can be performed using the steering wheel audio control switch:
• Initiate Self Diagnosis of the Bluetooth telephone system
• Start a voice recognition session
• Answer and end telephone calls
• Adjust the volume of calls
• Record memos
MICROPHONE
The microphone is located in the roof console assembly . The microphone sends a signal to the AV control unit.
The microphone can be actively tested during self-diagnosis.
AWNIA0131GB
Revision: December 20092009 QX56

AV-110
< ECU DIAGNOSIS >[AUDIO SYSTEM]
AV CONTROL UNIT
4
(L) 5
(B/W) Pre-amp. audio signal rear
LH
OutputIgnition
switch ON Audio output
6
(Y) 15 Steering switch signal A Input Ignition
switch
ON Pressing switch
0V
Pressing switch 0.75
Pressing VOL up switch 2V
Except for above 5V
7
(V) Ground ACC power supply
InputIgnition
switch ACC −
Battery voltage
9
(R/L) Ground Illumination signal
Input OFFLighting switch is OFF
0V
Lighting switch is ON Battery voltage
10 — Shield — —— —
11
(BR) 12
(B/R) Pre-amp. audio signal front
RH
OutputIgnition
switch ON Audio output
13
(W) 14
(B) Audio signal rear RH Output Ignition
switch
ON Audio output
15 Ground Steering switch signal
ground —Ignition
switch
ON —0
V
16
(BR) 15 Steering switch signal B Input Ignition
switch ON Pressing switch
0V
Pressing switch 0.75V
Pressing VOL down switch 2V
Except for above 5V
19
(Y) Ground Battery power supply Input Ignition
switch OFF —
Battery voltage
20
(B) Ground Ground
—Ignition
switch
ON —0
V
Terminal
(Wire color) Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
SKIB3609E
SKIB3609E
SKIB3609E
Revision: December 20092009 QX56

AV
MULTI AV SYSTEMAV-155
< SYMPTOM DIAGNOSIS > [AUDIO SYSTEM]
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SYMPTOM DIAGNOSIS
MULTI AV SYSTEM
Symptom TableINFOID:0000000003776898
AUDIO SYSTEM
NAVIGATION SYSTEM
HANDS-FREE PHONE SYSTEM
REAR VIEW MONITOR
Symptom Possible causeReference page
Inoperative • AV control unit power and ground circuit
• AV control unit •
AV- 6 8
•AV- 2 7
Steering switch does not operate • Steering switch
• AV control unit •
AV- 4 0•AV- 2 7
All speakers do not sound • AV control unit power and ground circuit
• BOSE speaker amp. ON signal
• BOSE speaker amp. power and ground circuit
• BOSE speaker amp.
• AV control unit •
AV- 6 8
•AV- 1 0 4
•AV- 7 0
•AV- 1 4 8
•AV- 1 0 9
One or several speakers do not sound • Front door speaker
• Front tweeter
• Center speaker
• Rear tweeter
• Rear door speaker
• Back door speaker
• Subwoofer •
AV- 8 4
•AV- 8 7
•AV- 9 0
•AV- 9 5
•AV- 9 2
•AV- 9 8
•AV- 1 0 1
Symptom Possible causeReference page
Inoperative • AV control unit power and ground circuit
• AV control unit •
AV- 6 8
•AV- 2 7
Steering switch does not operate • Steering switch
• AV control unit •
AV- 1 0 5•AV- 2 7
Voice activated control does not operate • Microphone
• Steering switch
• AV control unit •
AV- 1 0 7•AV- 1 0 5
•AV- 2 7
Symptom Possible causeReference page
Inoperative • AV control unit power and ground circuit
• AV control unit •
AV- 6 8
•AV- 2 7
Steering switch does not operate • Steering switch
• AV control unit •
AV- 1 0 5•AV- 2 7
Voice activated control does not operate • Microphone
• Steering switch
• AV control unit •
AV- 1 0 7•AV- 1 0 5
•AV- 2 7
Symptom Possible causeReference page
Inoperative • Rear view camera control unit power and ground circuit
• Reverse signal circuit
• Camera ON signal circuit
• Camera image signal circuit (rear view camera to rear
view camera control unit)
• Camera image signal circuit (rear view camera control unit to AV control unit)
• Rear view camera control unit •
AV- 7 2
•AV- 1 5 1
•AV- 1 5 1
•AV- 1 5 1
•AV- 1 5 1
•AV- 1 5 1
Revision: December 20092009 QX56