2006 INFINITI QX56 4WD

IDX-2
ALPHABETICAL INDEX
Numerics
2-4WD shift solenoid valve ..... TF-94
, TF-154, TF-167
4WD - Wiring diagram ....................................... TF-24
4WD shift switch ................................................ TF-66
4WD solenoid valve ................ TF-90, TF-154, TF-167
4WD system description .................................... TF-15
4WD system diagram ........................................ TF-19
A
A/C air flow ...................................................... ATC-30
A/C compressor clutch removal and installation .. ATC-
176
A/C compressor mounting ............................. ATC-175
A/C compressor precaution ............................. ATC-11
A/C compressor special service tool ................ ATC-14
A/C control operation (auto A/C) ...................... ATC-27
A/C diagnostic work flow (auto A/C) .............. ATC-130
A/C evaporator ............................................... ATC-184
A/C HFC134a (R134a) system identification ..... ATC-6
A/C HFC134a (R134a) system precaution ........ ATC-5
A/C HFC134a (R134a) system service procedure ATC-
171
A/C HFC134a (R134a) system service tools ... ATC-14
A/C HFC134a system service equipment precaution ...
ATC-11
A/C lubricant (R134a) ...................................... ATC-22
A/C lubrication oil ............................................. ATC-22
A/C operational check ....................... ATC-58, ATC-60
A/C self-diagnoses (auto A/C) ........ ATC-56, ATC-130
A/C service data specification ........................ ATC-191
A/C trouble diagnoses (auto A/C) .................... ATC-34
A/C, A - Wiring diagram ................................... ATC-44
A/T fluid checking ...................... AT-12, AT-51, MA-22
A/T fluid cooler cleaning .................................... AT-14
A/T fluid replacement ............................. AT-12, MA-24
A/T fluid temperature sensor ........................... AT-127
A/T IND - Wiring diagram .................................... DI-41
A/T indicator ........................................................ DI-41
A/T shift lock system ........................................ AT-221
A/T trouble diagnoses ........................................ AT-42
ABS - Wiring diagram ..................................... BRC-16
ABS (anti-lock brake system) ........................... BRC-7
Accelerator control system ............................... ACC-3
Accelerator pedal position (APP) sensor . EC-547, EC-
553, EC-567
Accelerator pedal released position learning ..... EC-78
AF1B1-Wiring diagram EC-216, EC-225, EC-234, EC-
244, EC-577
AF1B2-Wiring diagram EC-218, EC-227, EC-236, EC-
246, EC-579
AF1HB1-Wiring diagram .................................. EC-157
AF1HB2-Wiring diagram .................................. EC-159
Aiming adjustment .................................. LT-29, LT-78
Air bag .............................................................. SRS-3
Air bag precautions .............................................. AV-4
Air cleaner and air duct ..................................... EM-15
Air cleaner filter replacement ................ EM-16, MA-16
Air conditioner cut control ................................. EC-28
Air flow meter - See Mass air flow sensor EC-171, EC-
180
Air fuel ratio sensor 1 .. EC-213, EC-223, EC-232, EC-
241, EC-575
Air fuel ratio sensor 1 heater ........................... EC-156
Air mix. door motor .......................................... ATC-70
Ambient sensor ............................. ATC-134, ATC-145
Angular tightening application ............................. EM-4
Antenna .............................................................. AV-60
APPS1 - Wiring diagram ................................. EC-549
APPS2 - Wiring diagram ................................. EC-555
APPS3 - Wiring diagram ................................. EC-569
ASC/BS - Wiring diagram ............................... EC-513
ASC/SW - Wiring diagram .............................. EC-496
ASCBOF - Wiring diagram .............................. EC-587
ASCD ................................................................ EC-29
ASCD (automatic speed control device) ........... ACS-3
ASCD brake switch ........................... EC-511, EC-586
ASCD indicator lamp ....................................... EC-593
ASCD steering switch ..................................... EC-494
ASCIND - Wiring diagram ............................... EC-594
ATP switch ............................ TF-107, TF-110, TF-115
Audio .................................................................... AV-6
AUDIO - Wiring diagram .................................... AV-11
AUT/DP - Wiring diagram .................................. SE-16
Auto air conditioner - Wiring diagram .............. ATC-44
Auto anti-dazzling inside mirror ........... GW-72, GW-73
Autolamp ............................................................ LT-47
Automatic amplifier ......................................... ATC-61
Automatic drive positioner .................................. SE-11
Automatic transmission number .......................... GI-49
B
Back door ........................................................... BL-99
Back door trim ..................................................... EI-32
Back sonar .......................................................... DI-60
BACK/L - Wiring diagram ................................. LT-109
Back-up lamp ................................................... LT-109
Ball joint (front) ................................................ FSU-15
Basic inspection ................................................ EC-71
Battery ................................................................. SC-4
Battery/Starting/Charging System Tester SC-6, SC-12,
SC-19
BCM (Body control module) ................ BCS-3, AV-109
Block heater ...................................................... EM-78
Blower motor ................................... ATC-93, ATC-149
Body alignment ................................................ BL-172
Body component parts ..................................... BL-161
Body construction ............................................ BL-171
Body exterior paint color .................................. BL-160
Body mounting ................................................. BL-159
Body repair ....................................................... BL-160
Body sealing .................................................... BL-168
Bose speaker amp. .............................................. AV-8
Brake booster .................................................... BR-17
Brake fluid level ................................................. MA-28
Brake hydraulic line ........................................... BR-12

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Revision: November 20092006 QX56
Example of Filling in Check Sheet When Initial Conditions Are Reproduced
1. Put a check mark to “No indication” if some of unit names listed on the column of diagnosis system selec-
tion screen of a check sheet table are not displayed on “SELECT SYSTEM” screen attached to the check
sheet.
NOTE:
Put a check mark to “No indication” of AUTO DRIVE POS. because AUTO DRIVE POS. is not displayed
on “SELECT SYSTEM ” screen.
2. Confirm the unit name that “UNKWN” is displayed from the copy of “CAN DIAG SUPPORT MNTR” screen
of “ENGINE ” attached to the check sheet, and then put a check mark to the check sheet table.
NOTE:
In “CAN DIAG SUPPORT MNTR ” screen, “UNKWN” is displayed on “VDC/TCS/ABS”, “METER/M&A ”,
“BCM/SEC ” and “IPDM E/R ”. Put a check mark to it.
3. Confirm the unit name that “UNKWN” is displayed on the copy of “CAN DIAG SUPPORT MNTR ” screen
of “A/T ” as well as “ENGINE”. And then, put a check mark to the check sheet table.
NOTE:

For “A/T ”, “UNKWN ” is displayed on “VDC/TCS/ABS”, “METER/M&A ”, “ICC/e4WD ” and “AWD/4WD ”.
But put a check mark to “VDC/TCS/ABS” and “METER/M&A ” because “UNKWN ” is listed on the col-
umn of reception diagnosis of the check sheet table.
PKIC4972E

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TROUBLE DIAGNOSES WORK FLOW
Revision: November 20092006 QX56
5. Confirm the unit name that “UNKWN” is displayed on the copy of “CAN DIAG SUPPORT MNTR ” screen
of “BCM ”, “HVAC”, “ABS” and “IPDM E/R ” as well as “ENGINE”. And then, put a check mark to the check
sheet table.
NOTE:

For “BCM ”, “UNKWN ” is displayed on “ECM”. Put a check mark to it.

For “HVAC ”, “UNKWN ” is displayed on “ECM”. Put a check mark to it.

For “ABS”, “UNKWN ” is displayed on “ECM”, “TCM ”, “METER/M&A ”, “ICC ” and “AWD/4WD ”. But put a
check mark to “ECM” and “TCM” because “UNKWN” is listed on the column of reception diagnosis of
the check sheet table.

For “IPDM E/R ”, “UNKWN ” is displayed on “ECM”. Put a check mark to it.
CAUTION:
“ALL MODE AWD/4WD” puts a check mark on the check
sheet when “Present” is “UNKWN” and “Past” is “0”.
PKIC3659E
SKIB3244E

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Revision: November 20092006 QX56
CAN Diagnostic Support MonitorUKS004SU
DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN FOR ECM
Display Results (Present)

OK: Normal

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.

–: There is no received unit or the unit is not in the condition that reception diagnosis is performed.
Display Results (Past)

OK: Normal

0: There is malfunction now.

1 ~ 39: Displays when it is normal at present and finds malfunction in the past. It increases like 0 →1→ 2...38→ 39 after returning to the
normal condition whenever IGN OFF →ON. If it is over 39, it is fixed to 39 until the self-diagnostic results are erased. It returns to 0
when malfunction is detected again in the process.

– : Undiagnosed
PKIC3562E
“SELECT SYSTEM ”
screen “
CAN DIAG SUPPORT
MNTR ” screen Description
PresentPast
ENGINE TRANSMIT DIAG Make sure of normal transmission.
OK/UNKWN/–
OK/0/1~39/–
VDC/TCS/ABS
Make sure of normal reception from ABS
actuator and electric unit (control unit). OK/UNKWN/
–
METER/M&A Make sure of normal reception from combina-
tion meter. OK/UNKWN/
–
BCM/SEC Make sure of normal reception from BCM. OK/UNKWN/ –
ICC Make sure of normal reception from ICC unit. OK/UNKWN/ –
HVAC HVAC is not diagnosed. –
TCM Make sure of normal reception from TCM. OK/UNKWN/ –
EPS EPS is not diagnosed. –
IPDM E/R Make sure of normal reception from IPDM E/
R. OK/UNKWN/
–
e4WD e4WD is not diagnosed. –
AWD/4WD Make sure of normal reception from transfer
control unit. OK/UNKWN/
–

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DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN
FOR TCM
Display Results (Present)

OK: Normal

NG: Malfunction

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.
SKIB2335E
“SELECT SYSTEM ”
screen “
CAN DIAG SUPPORT
MNTR ” screen Description
Present
A/T INITIAL DIAG
Make sure that microcomputer in ECU works normally. OK/NG
TRANSMIT DIAG Make sure of normal transmission. OK/UNKWN
ECM Make sure of normal reception from ECM. OK/UNKWN
VDC/TCS/ABS Make sure of normal reception from ABS actuator and electric unit
(control unit). OK/UNKWN
METER/M&A Make sure of normal reception from combination meter. OK/UNKWN
ICC/e4WD Make sure of normal reception from ICC unit. OK/UNKWN
AWD/4WD Make sure of normal reception from transfer control unit. OK/UNKWN

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DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN FOR FRONT AIR CONTROL
Display Results (Present)

OK: Normal

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.

–: There is no received unit or the unit is not in the condition that reception diagnosis is performed.
Display Results (Past)

OK: Normal

0: There is malfunction now.

1 ~ 39: Displays when it is normal at present and finds malfunction in the past. It increases like 0 →1→ 2...38 →39 after returning to the
normal condition whenever IGN OFF →ON. If it is over 39, it is fixed to 39 until the self-diagnostic results are erased. It returns to 0
when malfunction is detected again in the process.

– : Undiagnosed
PKIC4721E
“SELECT SYSTEM ”
screen “
CAN DIAG SUPPORT
MNTR ” screen Description
Present Past
HVAC TRANSMIT DIAG Make sure of normal transmission.
OK/UNKWN/–
OK/0/1~39/ –
ECM
Make sure of normal reception from ECM. OK/UNKWN/ –
TCM TCM is not diagnosed. –
BCM/SEC Make sure of normal reception from BCM. OK/UNKWN/ –
VDC/TCS/ABS Make sure of normal reception from ABS actua-
tor and electric unit (control unit). OK/UNKWN/
–
IPDM E/R IPDM E/R is not diagnosed. –
DISPLAY Make sure of normal reception from display con-
trol unit.
OK/UNKWN/
–
I-KEY I-KEY is not diagnosed. –
EPS EPS is not diagnosed. –
AWD/4WD AWD/4WD is not diagnosed. –
e4WD e4WD is not diagnosed. –
ICC ICC is not diagnosed. –
LANE KEEP LANE KEEP is not diagnosed. –
TIRE-P TIRE-P is not diagnosed. –

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TROUBLE DIAGNOSES WORK FLOW
Revision: November 20092006 QX56
DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN
FOR TRANSFER CONTROL UNIT
Display Results (Present)

OK: Normal

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.
CAUTION:
“UNKWN” is indicated by erasing the self-diagnosis result when any malfunction was detected in past.

–: There is no received unit or the unit is not in the condition that reception diagnosis is performed.
Display Results (Past)

OK: Normal

0: There is malfunction now.

1 ~ 39: Displays when it is normal at present and finds malfunction in the past. It increases like 0 →1→ 2...38→ 39 after returning to the
normal condition whenever IGN OFF →ON. If it is over 39, it is fixed to 39 until the self-diagnostic results are erased. It returns to 0
when malfunction is detected again in the process.

– : Undiagnosed
CAUTION:

“UNKWN” is indicated in “Present” and “0” is indicated in
“Past” when any malfunction is detected at present.

“UNKWN” is indicated in “Present” and “1~39” is indicated
in “Past” when any malfunction was detected in past.
PKIC3565E
“SELECT SYSTEM ”
screen “
CAN DIAG SUPPORT
MNTR ” screen Description
Present Past
ALL MODE AWD/
4WD TRANSMIT DIAG Make sure of normal transmission.
OK/UNKWN/–
OK/0/1~39/ –
ECM
Make sure of normal reception from ECM. OK/UNKWN/ –
VDC/TCS/ABS Make sure of normal reception from ABS actua-
tor and electric unit (control unit). OK/UNKWN/
–
TCM Make sure of normal reception from TCM. OK/UNKWN/ –
STRG Make sure of normal reception from steering
angle sensor. OK/UNKWN/
–
SKIB3246E

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Revision: November 2009 2006 QX56
DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN
FOR ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)
Display Results (Present)

OK: Normal

NG: Malfunction

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.
PKIC4722E
“SELECT SYSTEM ”
screen “
CAN DIAG SUPPORT
MNTR ” screen Description
Present
ABS INITIAL DIAG
Make sure that microcomputer in ECU works normally. OK/NG
TRANSMIT DIAG Make sure of normal transmission. OK/UNKWN
ECM Make sure of normal reception from ECM. OK/UNKWN
TCM Make sure of normal reception from TCM. OK/UNKWN
METER/M&A METER/M&A is not diagnosed. UNKWN
STRG Make sure of normal reception from steering angle sensor. OK/UNKWN
ICC Make sure of normal reception from ICC unit. OK/UNKWN
AWD/4WD Make sure of normal reception from transfer control unit. OK/UNKWN