2009 INFINITI QX56 100

ADP-1
BODY INTERIOR
C
DE
F
G H
I
K L
M
SECTION ADP
A
B
ADP
N
O P
CONTENTS
AUTOMATIC DRIVE POSITIONER
BASIC INSPECTION ....... .............................5
DIAGNOSIS AND REPAIR WORKFLOW ..... .....5
Work Flow ........................................................... ......5
INSPECTION AND ADJUSTMENT .....................8
Preliminary Check ............................................... ......8
Special Repair Requirement .....................................8
PRE-INSPECTION FOR DIAGNOSTIC ..............9
Basic Inspection .................................................. ......9
FUNCTION DIAGNOSIS ..............................11
AUTOMATIC DRIVE POSITIONER SYSTEM ....11
AUTOMATIC DRIVE POSITIONER SYSTEM ....... ....11
AUTOMATIC DRIVE POSITIONER SYSTEM :
System Diagram ......................................................
11
AUTOMATIC DRIVE POSITIONER SYSTEM :
Component Parts Location ......................................
12
AUTOMATIC DRIVE POSITIONER SYSTEM :
System Description .................................................
12
AUTOMATIC DRIVE POSITIONER SYSTEM :
Component Description ..........................................
13
MANUAL FUNCTION ............................................ ....14
MANUAL FUNCTION : System Diagram ................15
MANUAL FUNCTION : System Description ............15
MANUAL FUNCTION : Component Parts Loca-
tion ..........................................................................
17
MANUAL FUNCTION : Component Description ....17
MEMORY FUNCTION ........................................... ....18
MEMORY FUNCTION : System Diagram ...............19
MEMORY FUNCTION : System Description ..........19
MEMORY FUNCTION : Component Parts Loca-
tion ..........................................................................
20
MEMORY FUNCTION : Component Description ....21
EXIT ASSIST FUNCTION ...................................... ....22
EXIT ASSIST FUNCTION : System Diagram .........22
EXIT ASSIST FUNCTION : Sy stem Description .....22
EXIT ASSIST FUNCTION : Component Parts Lo-
cation ................................................................... ....
23
EXIT ASSIST FUNCTION :
Component Description ..........................................
24
ENTRY ASSIST FUNCTION .................................. ....24
ENTRY ASSIST FUNCTION : System Diagram .....25
ENTRY ASSIST FUNCTION : System Description
....
25
ENTRY ASSIST FUNCTION : Component Parts
Location ............................................................... ....
26
ENTRY ASSIST FUNCTION :
Component Description ..........................................
27
DIAGNOSIS SYSTEM (DRIVER SEAT C/U) ....28
Diagnosis Description ..............................................28
CONSULT-III Function ............................................28
COMPONENT DIAGNOSIS .........................31
U1000 CAN COMM CIRCUIT ...........................31
Description ........................................................... ....31
DTC Logic ................................................................31
Special Repair Requirement ....................................31
B2112 SLIDING MOTOR ..................................32
Description ...............................................................32
DTC Logic ................................................................32
Diagnosis Procedure ..............................................32
B2113 RECLINING MOTOR .............................33
Description ...............................................................33
DTC Logic ................................................................33
Diagnosis Procedure ..............................................33
B2114 SEAT LIFTER FR ..................................34
Description ...............................................................34
DTC Logic ................................................................34
Diagnosis Procedure ..............................................34
B2115 SEAT LIFTER RR ..................................35
Description ...............................................................35
Revision: December 20092009 QX56

ADP-3
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
RECLINING SENSOR .................................... ....76
Description .......................................................... ....76
Component Function Check ..................................76
Diagnosis Procedure ..............................................76
LIFTING SENSOR (FRONT) ..............................78
Description .......................................................... ....78
Component Function Check ..................................78
Diagnosis Procedure ..............................................78
LIFTING SENSOR (REAR) ................................80
Description .......................................................... ....80
Component Function Check ..................................80
Diagnosis Procedure ..............................................80
TILT SENSOR ....................................................82
Description .......................................................... ....82
Component Function Check ..................................82
Diagnosis Procedure ..............................................82
PEDAL ADJUSTING SENSOR ..........................84
Description .......................................................... ....84
Component Function Check ..................................84
Diagnosis Procedure ..............................................84
MIRROR SENSOR .............................................86
DRIVER SIDE ........................................................ ....86
DRIVER SIDE : Description ....................................86
DRIVER SIDE : Component Function Check ........86
DRIVER SIDE : Diagnosis Procedure ....................86
PASSENGER SIDE ...................................................88
PASSENGER SIDE : Description ....................... ....88
PASSENGER SIDE :
Component Function Check ..................................
88
PASSENGER SIDE : Diagnosis Procedure ...........88
SLIDING MOTOR ...............................................90
Description .......................................................... ....90
Component Function Check ..................................90
Diagnosis Procedure ..............................................90
RECLINING MOTOR ..........................................92
Description .......................................................... ....92
Component Function Check ..................................92
Diagnosis Procedure ..............................................92
LIFTING MOTOR (FRONT) ................................94
Description .......................................................... ....94
Component Function Check ..................................94
Diagnosis Procedure ..............................................94
LIFTING MOTOR (REAR) ..................................96
Description .......................................................... ....96
Component Function Check ..................................96
Diagnosis Procedure ..............................................96
TILT MOTOR ......................................................98
Description .......................................................... ....98
Component Function Check ..................................98
Diagnosis Procedure ..............................................98
PEDAL ADJUSTING MOTOR ........................100
Description ........................................................... ..100
Component Function Check ................................100
Diagnosis Procedure ............................................100
DOOR MIRROR MOTOR ................................102
Description .............................................................102
Component Function Check ..................................102
Diagnosis Procedure .............................................102
Component Inspection ...........................................104
SEAT MEMORY INDICATOR LAMP ..............105
Description .............................................................105
Component Function Check ................................105
Diagnosis Procedure ............................................105
Component Inspection ...........................................106
ECU DIAGNOSIS .......................................107
DRIVER SEAT CONTROL UNIT ....................107
Reference Value .................................................. ..107
Wiring Diagram ......................................................112
Fail Safe ................................................................126
DTC Index .............................................................127
AUTOMATIC DRIVE POSITIONER CON-
TROL UNIT ......................................................
128
Reference Value ....................................................128
Wiring Diagram ......................................................131
BCM (BODY CONTROL MODULE) ...............146
Reference Value ....................................................146
Terminal Layout .....................................................148
Physical Values .....................................................148
Wiring Diagram ......................................................154
SYMPTOM DIAGNOSIS ............................159
ADP SYSTEM SYMPTOMS ............................159
Symptom Table ................................................... ..159
NORMAL OPERATING CONDITION .............161
Description .............................................................161
PRECAUTION ............................................162
PRECAUTIONS ...............................................162
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
162
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .................................
162
Precaution for Work ...............................................163
PREPARATION .........................................164
PREPARATION ...............................................164
Special Service Tool ............................................ ..164
Commercial Service Tool ......................................164
ON-VEHICLE REPAIR ...............................165
Revision: December 20092009 QX56

U1000 CAN COMM CIRCUITADP-31
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000003775516
Refer to LAN-4, "System Description".
DTC LogicINFOID:0000000003775517
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1. STEP 1
Turn ignition switch ON and wait at least 3 seconds.
>> GO TO 2
2. STEP 2
Check “Self diagnostic result” with CONSULT-III.
Is the DTC detected?
YES >> Perform diagnosis procedure. Refer to LAN-14, "Trouble Diagnosis Procedure".
NO >> Inspection End.
Special Repair RequirementINFOID:0000000003775519
Refer to Owner’s Manual.
DTC Trouble diagnosis
name DTC detecting condition Possible cause
U1000 CAN COMM CIR-
CUIT  Driver seat control unit cannot communicate to other
control units.
 Driver seat control unit c annot communicate for more
than the specified time.  Harness or connectors
(CAN communication line is
open or shorted)
Revision: December 20092009 QX56

ADP-100
< COMPONENT DIAGNOSIS >
PEDAL ADJUSTING MOTOR
PEDAL ADJUSTING MOTOR
DescriptionINFOID:0000000003775636
 The pedal adjusting motor is installed to the pedal assembly.
 The pedal adjusting motor is activated with the automatic drive positioner control unit.
 The pedal assembly is adjusted forward/backward by changing the rotation direction of pedal adjustingmotor.
Component Function CheckINFOID:0000000003775637
1. CHECK FUNCTION
1. Select “ADJ PEDAL MOTOR” in “Active test” mode with CONSULT-III.
2. Check the pedal adjusting motor operation.
Is the operation of relevant parts normal?
YES >> Inspection End.
NO >> Perform diagnosis procedure. Refer to ADP-100, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003775638
1. CHECK PEDAL ADJUSTING MOTOR POWER SUPPLY
1. Turn the ignition switch OFF.
2. Perform “Active test” (“ADJ PEDAL MOTOR”) with CONSULT-lll.
3. Check voltage between automatic drive positioner control unit harness connector and ground.
Is the inspection result normal?
YES >> Replace pedal adjusting motor assembly. Refer to ADP-169, "Removal and Installation".
NO >> GO TO 2
2. CHECK PEDAL ADJUSTING MOTOR CIRCUIT
Test item Description
ADJ PEDAL MOTOR OFF
Pedal adjusting motor Sto p
FR Forward
RR Backward
Te r m i n a l
Test ItemVoltage
(V)
(Approx.)
(+)
(-)
Automatic
drive posi-
tioner con- trol unit
connector Te r m i n a l
M34 37
Ground ADJ PED-
AL MOTOR OFF 0
RR (backward) 0
FR (forward)
Battery
voltage
45 OFF 0
RR (backward)
Battery
voltage
FR (forward) 0
PIIA4806E
Revision: December 20092009 QX56

DRIVER SEAT CONTROL UNITADP-127
< ECU DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
NOTE:
The front seat LH position and pedal adjustment functi ons (see the following table) operate simultaneously in
the order of priority.
*: In conjunction with sliding the seat, the door mirrors are positioned.
CANCEL OF FAIL-SAFE MODE
The mode is cancelled when the A/T selector lever is shifted to P position from any other position.
DTC IndexINFOID:0000000003775650
*1:
 0: Current malfunction is present
 1-39: Displayed if any previous malfunction is present when current condition is normal. The numeral value increases by one at each
IGN ON to OFF cycle from 1 to 39. The counter remains at 39 even if the number of cycles exceeds it. However, the counter is re set
to 1 if any malfunction is detected again, the normal operation is resumed and the ignition switch is turned from OFF to ON. OPERATED PORTION T2
Seat sliding Approx. 0.1 sec.
Seat reclining Same as above
Seat lifting (Front) Same as above
Seat lifting (Rear) Same as above
Pedal adjust Same as above
Priority Function Priority Function1 Seat sliding, (door mirro r LH/RH)* 4 Seat lifter-FR
2 Pedal 5 Seat lifter-RR
3Seat reclining
CONSULT-III display Timing
*1
Item Reference page
Current mal-
function Previous mal-
function
CAN COMM CIRCUIT
[U1000] 0 1-39 CAN communication
ADP-31
SEAT SLIDE
[B2112]0 1-39 Seat slide motor output
ADP-32
SEAT RECLINING
[B2113]0 1-39 Seat reclining motor output
ADP-33
SEAT LIFTER FRONT
[B2114]0 1-39 Seat lifting motor front output
ADP-36
SEAT LIFTER REAR
[B2115]0 1-39 Seat lifting motor rear output
ADP-36
TILT MOTOR
[B2116]0 1-39 Tilt motor output
ADP-98
ADJ PEDAL MOTOR
[B2117]0 1-39 Pedal adjusting motor output
ADP-36
TILT SENSOR
[B2118]0 1-39 Tilt sensor input
ADP-38
ADJ PEDAL SENSOR
[B2120]0 1-39 Pedal adjusting sensor input
ADP-36
DETENT SW
[B2126]0 1-39 Park position switch condition
ADP-42
UART COMM
[B2128]0 1-39 UART communication
ADP-44
Revision: December 20092009 QX56

ADP SYSTEM SYMPTOMSADP-159
< SYMPTOM DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
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

AV
AV-1
DRIVER INFORMATION & MULTIMEDIA
C
DE
F
G H
I
J
K L
M B
SECTION AV
A
O P
CONTENTS
AUDIO, VISUAL & NAVIGATION SYSTEM
AUDIO SYSTEM
BASIC INSPECTION ....... .............................
5
DIAGNOSIS AND REPAIR WORKFLOW ..... .....5
Work Flow ........................................................... ......5
INSPECTION AND ADJUSTMENT .....................7
REAR VIEW MONITOR GUIDING LINE ADJUST-
MENT ..................................................................... ......
7
REAR VIEW MONITOR GUIDING LINE ADJUST-
MENT : Description ...................................................
7
REAR VIEW MONITOR GUIDING LINE ADJUST-
MENT : Special Repair Requirement ........................
7
FUNCTION DIAGNOSIS ...............................9
AUDIO SYSTEM ............................................. .....9
System Diagram .................................................. ......9
System Description ...................................................9
Component Parts Location ......................................11
Component Description ...........................................12
NAVIGATION SYSTEM ......................................13
System Diagram .................................................. ....13
System Description .................................................13
Component Parts Location ......................................16
Component Description ...........................................17
REAR VIEW MONITOR SYSTEM ......................18
System Diagram .................................................. ....18
System Description .................................................18
Component Parts Location ......................................19
Component Description ...........................................20
DVD PLAYER .....................................................21
System Diagram .................................................. ....21
System Description .................................................21
Component Parts Location ......................................22
Component Description ...........................................22
HANDS-FREE PHONE SYSTEM ......................24
System Diagram .................................................. ....24
System Description ..................................................24
Component Parts Location ......................................25
Component Description ...........................................26
DIAGNOSIS SYSTEM (AV CONTROL UNIT) ...27
AV CONTROL UNIT .............................................. ....27
AV CONTROL UNIT : Diagnosis Description ..........27
AV CONTROL UNIT : CONS ULT-III Function .........38
A/C AND AV SWITCH ASSEMBLY ...................... ....40
A/C AND AV SWITCH ASSEMBLY : Component
Function Check ........................................................
40
COMPONENT DIAGNOSIS .........................41
U1000 CAN COMM CIRCUIT ...........................41
Description ........................................................... ....41
DTC Logic ................................................................41
Diagnosis Procedure ..............................................41
U1010 CONTROL UNIT (CAN) .........................42
Description ...............................................................42
DTC Logic ................................................................42
Diagnosis Procedure ...............................................42
U1200 AV CONTROL UNIT ..............................43
Description ...............................................................43
DTC Logic ................................................................43
U1201 AV CONTROL UNIT ..............................44
Description ...............................................................44
DTC Logic ................................................................44
U1204 GPS COMM ...........................................45
Description ...............................................................45
DTC Logic ................................................................45
U1205 GPS ROM ..............................................46
Description ...............................................................46
DTC Logic ................................................................46
Revision: December 20092009 QX56

AV-6
< BASIC INSPECTION >[AUDIO SYSTEM]
DIAGNOSIS AND REPAIR WORKFLOW
Is any DTC No. displayed?
YES >> GO TO 3.
NO >> GO TO 4.
3.CHECK SELF-DIAGNOSIS RESULTS (CONSULT-III)
1. Check the DTC No. indicated in the self-diagnosis results.
2. Perform the relevant diagnosis referring to the DTC No. list. Refer to AV-143, "
DTC Index".
NOTE:
Start with the diagnosis for the CAN communication system if “CAN COMM CIRCUIT [U1000] or CONTROL
UNIT (CAN) [U1010]” is displayed.
>> GO TO 5.
4.PERFORM DIAGNOSIS BY SYMPTOM
Perform the relevant diagnosis referring to the diagnosis chart by symptom. Refer to AV-155, "
Symptom
Table".
>> GO TO 5.
5.REPAIR OR REPLACE MALFUNCTIONING PARTS
Repair or replace the identified malfunctioning parts.
NOTE:
Erase the stored self-diagnosis results after repairing or replacing the relevant components if any DTC No. has
been indicated in the self-diagnosis results.
>> GO TO 6.
6.CHECK AFTER REPAIR
1. Perform self-diagnosis for “MULTI AV” with CONSULT- III after repairing or replacing the malfunctioning
parts.
2. Check if any DTC No. is displayed in the self-diagnosis results.
Is any DTC No. displayed?
YES >> GO TO 3.
NO >> GO TO 7.
7.FINAL CHECK
Perform the operation check to confirm that the malf unction symptom is solved or that any other symptoms
are present.
Are any symptoms present?
YES >> GO TO 4.
NO >> Inspection End.
Revision: December 20092009 QX56