window INFINITI QX56 2006 Factory User Guide

ATC-124
TROUBLE DIAGNOSIS
Revision: November 20092006 QX56
PERFORMANCE CHART
Test Condition
Testing must be performed as follows:
Test Reading
Recirculating-to-discharge Air Temperature Table
Ambient Air Temperature-to-operating Pressure Table
Vehicle locationIndoors or in the shade (in a well-ventilated place)
Doors Closed
Door window Open
Hood Open
TEMP. Max. COLD
Mode switch (Ventilation) set
Recirculation (REC) switch (Recirculation) set
Blower speed Max. speed set
Engine speed Idle speed
Operate the air conditioning system for 10 minutes before taking measurements.
Inside air (Recirculating air) at blower assembly inlet Discharge air temperature at center ventilator
°C (°F)
Relative humidity
% Air temperature
°C (°F)
50 - 60 20 (68)
9.9 - 13.9 (50 - 57)
25 (77) 14.6 - 18.6 (58 - 65)
30 (86) 16.8 - 21.8 (62 - 71)
35 (95) 21.1 - 27.1 (70 - 81)
40 (104) 25.3 - 31.5 (78 - 89)
60 - 70 20 (68)
11.4 - 15.2 (53 - 59)
25 (77) 15.5 - 20.0 (60 - 68)
30 (86) 19.9 - 25.0 (68 - 77)
35 (95) 24.5 - 29.6 (76 - 85)
40 (104) 28.7 - 34.9 (84 - 95)
Ambient air High-pressure (Discharge side)
kPa (kg/cm
2 , psi) Low-pressure (Suction side)
kPa (kg/cm2 , psi)
Relative humidity
% Air temperature
°C (°F)
50 - 70 20 (68)
1020 - 1250
(10.4 - 12.7, 147.9 - 181.3) 160 - 190
(1.63 - 1.94, 23.2 - 27.6)
25 (77) 1236 - 1510
(12.6 - 15.4, 179.2 - 219) 206 - 245
(2.1 - 2.5, 29.9 - 35.6)
30 (86) 1569 - 1,922
(16.0 - 19.6, 227.6 - 278.8) 265 - 324
(2.7 - 3.3, 38.4 - 46.9)
35 (95) 1,697 - 2079
(17.3 - 21.2, 246.1 - 301.5) 304 - 363
(3.1 - 3.7, 44.1 - 52.6)
40 (104) 1971 - 2403
(20.1 - 24.5, 285.9 - 348.5) 373 - 451
(3.8 - 4.6, 54.0 - 65.4)

REFRIGERANT LINESATC-187
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CAUTION:
Cap or wrap the A/C refrigerant pipe ends with a suitable material such as vinyl tape to avoid the
entry of air and contaminants.
4. Remove the expansion valve.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:

Replace the O-rings on the A/C refrigerant pipes with new ones, then apply compressor oil to them
when installing them.

After charging refrigerant, check for leaks.
Checking for Refrigerant LeaksEJS003Z5
PRELIMINARY CHECK
Perform a visual inspection of all refrigeration parts, fittings, hoses and components for signs of A/C oil leak-
age, damage, and corrosion. Any A/C oil leakage may indicate an area of refrigerant leakage. Allow extra
inspection time in these areas when using either an electronic refrigerant leak detector (J-41995) or fluores-
cent dye leak detector (J-42220).
If any dye is observed using a fluorescent dye leak detector (J-42220), confirm the leak using a electronic
refrigerant leak detector (J-41995). It is possible that the dye is from a prior leak that was repaired and not
properly cleaned.
When searching for leaks, do not stop when one leak is found but continue to check for additional leaks at all
system components and connections.
When searching for refrigerant leaks using an electronic refrigerant leak detector (J-41995), move the probe
along the suspected leak area at 25 - 50 mm (1 - 2 in) per second and no further than 6 mm (1/4 in) from the
component.
CAUTION:
Moving the electronic refrigerant leak detector probe slower and closer to the suspected leak area will
improve the chances of finding a leak.
Checking System for Leaks Using the Fluorescent Dye Leak DetectorEJS003Z6
1. Check the A/C system for leaks using the fluorescent dye leak detector and safety goggles (J-42220) in a low sunlight area (area without windows preferable). Illuminate all components, fittings and lines. The dye
will appear as a bright green/yellow area at the point of leakage. Fluorescent dye observed at the evapo-
rator drain opening indicates an evaporator core assembly leak (tubes, core or expansion valve).
2. If the suspected area is difficult to see, use an adjustable mirror or wipe the area with a clean shop rag or cloth, then inspect the shop rag or cloth with the fluorescent dye leak detector (J-42220) for dye residue.
3. After the leak is repaired, remove any residual dye using refrigerant dye cleaner (J-43872) to prevent future misdiagnosis.
4. Perform a system performance check and then verify the leak repair using a electronic refrigerant leak detector (J-41995).
NOTE:

Other gases in the work area or substances on the A/C components, for example, anti-freeze, wind-
shield washer fluid, solvents and oils, may falsely trigger the leak detector. Make sure the surfaces to
be checked are clean.

Clean with a dry cloth or blow off with shop air.

Do not allow the sensor tip of the electronic refrigerant leak detector (J-41995) to contact with any sub-
stance. This can also cause false readings and may damage the detector.
Dye InjectionEJS003Z7
NOTE:
This procedure is only necessary when recharging the system or when the compressor has seized and must
be replaced.
1. Check the A/C system static (at rest) pressure. Pressure must be at least 345 kPa (3.52 kg/cm
2 , 50 psi).
Expansion valve bolts : 4 N·m (0.41 kg-m, 35 in-lb)
A/C refrigerant pipe to expansion valve bolt : Refer to
ATC-173, "
Components"
.

AV-1
AUDIO, VISUAL, NAVIGATION & TELEPHONE SYS-TEM
K ELECTRICAL
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PRECAUTIONS .....................................................
..... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 4
PREPARATION ...................................................... ..... 5
Commercial Service Tool .................................... ..... 5
AUDIO .................................................................... ..... 6
Component Parts and Harness Connector Location ..... 6
System Description ............................................. ..... 8
REAR AUDIO REMOTE CONTROL UNIT ...... ..... 8
SATELLITE RADIO TUNER (PRE-WIRING) ... ..... 9
SATELLITE RADIO TUNER (FACTORY
INSTALLED) .................................................... ..... 9
SPEED SENSITIVE VOLUME SYSTEM ......... ..... 9
Schematic ........................................................... ... 10
Wiring Diagram — AUDIO — .............................. .... 11
Terminals and Reference Value for Audio Unit .... ... 22
Terminals and Reference Value for BOSE Speaker
Amp. .................................................................... ... 25
Terminals and Reference Value for Rear Audio
Remote Control Unit ............................................ ... 28
Terminals and Reference Value for AV Switch .... ... 29
Terminals and Reference Value for Satellite Radio
Tuner (Factory Installed) ..................................... ... 30
AV Switch Self-Diagnosis Function ..................... ... 31
STARTING THE SELF-DIAGNOSIS MODE .... ... 31
EXITING THE SELF-DIAGNOSIS MODE ........ ... 31
DIAGNOSIS FUNCTION .................................. ... 31
Trouble Diagnosis ............................................... ... 32
MALFUNCTION WITH RADIO AND CD .......... ... 32
FOR RADIO ONLY ........................................... ... 32
FOR CD ONLY ................................................. ... 33
FOR SATELLITE RADIO TUNER (FACTORY
INSTALLED) ONLY .......................................... ... 33
Noise Inspection .................................................. ... 33
TYPE OF NOISE AND POSSIBLE CAUSE ..... ... 33
Power Supply Circuit Inspection ......................... ... 35
Satellite Radio Tuner (Factory Installed) Power and
Ground Supply Circuit Inspection ........................ ... 37
Satellite Radio Tuner (Factory Installed) Commu- nication Circuit Inspection ....................................
... 38
Satellite Radio Tuner (Factory Installed) Left Chan-
nel Audio Signal Circuit Inspection ...................... ... 40
Satellite Radio Tuner (Factory Installed) Right
Channel Audio Signal Circuit Inspection ............. ... 41
Steering Switch Check ......................................... ... 41
AV Switch Check ................................................. ... 43
Audio Communication Line Check ...................... ... 44
Sound Is Not Heard From Front Door Speaker or
Front Tweeter ...................................................... ... 44
Sound Is Not Heard From Rear Door Speaker or
Rear Door Tweeter ................................................. 48
Sound Is Not Heard From Center Speaker ......... ... 51
Sound Is Not Heard From Subwoofer .................... 52
Removal and Installation ..................................... ... 55
AUDIO UNIT ..................................................... ... 55
AV SWITCH ...................................................... ... 55
BOSE SPEAKER AMP. .................................... ... 55
CENTER SPEAKER ......................................... ... 56
FRONT DOOR SPEAKER ............................... ... 56
FRONT TWEETER .......................................... ... 56
REAR AUDIO REMOTE CONTROL UNIT ....... ... 57
REAR DOOR SPEAKER .................................. ... 57
REAR DOOR TWEETER ................................. ... 57
SATELLITE RADIO ANTENNA ........................ ... 58
SATELLITE RADIO TUNER ............................. ... 58
STEERING WHEEL AUDIO CONTROL
SWITCHES ...................................................... ... 59
SUBWOOFER .................................................. ... 59
AUDIO ANTENNA ................................................. ... 60
System Description .............................................. ... 60
Wiring Diagram — W/ANT — .............................. ... 61
Location of Antenna ............................................. ... 62
Window Antenna Repair ...................................... ... 62
ELEMENT CHECK ........................................... ... 62
ELEMENT REPAIR .......................................... ... 63
TELEPHONE .......................................................... ... 64
Component Parts and Harness Connector Location ... 64
System Description .............................................. ... 65
BLUETOOTH® HANDS-FREE PHONE SYS-

AV-62
AUDIO ANTENNA
Revision: November 20092006 QX56
Location of AntennaEKS00BJ3
Window Antenna RepairEKS00BJ4
ELEMENT CHECK
1. Attach probe circuit tester (ohm setting) to antenna terminal on
each side.
WKIA4568E
←: To audio unit
1. Antenna Feeder 2. Satellite radio tuner 3. M48, M501
4. M64, M35 5. M502, M604 6. Satellite antenna feeder
7. Satellite antenna (if equipped, factory installed)
M351 8. Antenna amp
SEL250I

BCM (BODY CONTROL MODULE)BCS-7
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BCM is activated with low current consumption mode.

CAN communication is not active.

When CAN communication operation is detected, it switches to CAN communication status.

When a state of the following switches changes, it switches to CAN communication state:
–Ignition switch
–Key switch (insert)
–Hazard switch
–Main door lock/unlock switch
–Front door switch (LH, RH)
–Rear door switch (LH, RH)
–Back latch (door ajar switch)
–Glass hatch ajar switch
–Combination switch (passing, lighting switch 1st position, front fog lamp)
–Keyfob (lock/unlock signal)
–Front door lock assembly LH (key cylinder switch)

When control performed only by BCM is required by switch, it shifts to CAN communication inactive
mode.

Status of combination switch reading function is changed.
SYSTEMS CONTROLLED BY BCM DIRECTLY

Power door lock system. Refer to BL-16, "POWER DOOR LOCK SYSTEM" .

Remote keyless entry system. Refer to BL-44, "REMOTE KEYLESS ENTRY SYSTEM" .

Power window system. Refer to GW-15, "POWER WINDOW SYSTEM" . NOTE

Sunroof system. Refer to RF-10, "SUNROOF" . NOTE

Room lamp timer. Refer to LT- 1 3 4 , "INTERIOR ROOM LAMP" .

Warning chime system. Refer to DI-43, "WARNING CHIME" .

Turn signal and hazard warning lamps system. Refer to LT- 8 0 , "TURN SIGNAL AND HAZARD WARNING
LAMPS" .

Trailer turn signal and hazard warning lamps system (if equipped). Refer to LT- 1 2 6 , "TRAILER TOW" .

Rear wiper and washer system. Refer to WW-32, "REAR WIPER AND WASHER SYSTEM" .
NOTE:
Power supply only. No system control.
SYSTEMS CONTROLLED BY BCM AND IPDM E/R

Panic system. Refer to BL-44, "REMOTE KEYLESS ENTRY SYSTEM" .

Vehicle security system. Refer to BL-75, "VEHICLE SECURITY (THEFT WARNING) SYSTEM" .

IVIS (NATS) system. Refer to BL-137, "IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)" .

Headlamp, tail lamp, front fog lamp, auto light and battery saver control systems. Refer to LT- 5 , "HEAD-
LAMP (FOR USA)" , LT- 3 3 , "HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -" , LT- 111 ,
"PARKING, LICENSE PLATE AND TAIL LAMPS" , LT- 6 9 , "FRONT FOG LAMP" or LT- 4 7 , "AUTO LIGHT
SYSTEM" .

Front wiper and washer system. Refer to WW-4, "FRONT WIPER AND WASHER SYSTEM" .

Rear window defogger system. Refer to GW-74, "REAR WINDOW DEFOGGER" .
MAJOR COMPONENTS AND CONTROL SYSTEM
System InputOutput
Remote keyless entry system Remote keyless entry receiver (keyfob)

All door locking actuators

Back door opener actuator

Turn signal lamps
Power door lock system

Front power door lock/unlock switch (LH, RH)

All door switches

Key switch All door locking actuators

BCS-8
BCM (BODY CONTROL MODULE)
Revision: November 20092006 QX56
CAN Communication System DescriptionEKS00D7X
Refer to LAN-26, "CAN COMMUNICATION" .
Power supply [ignition (IGN)/retained
accessory power (RAP)] to power win-
dow and sunroof IGN/RAP supply
Power supply to power window and
sunroof system
Power supply (BAT) to power window
and sunroof Battery power supply Power supply to power window and
sunroof system
Panic alarm

Key switch

Remote keyless entry receiver (keyfob) IPDM E/R
Auto light system

Optical sensor

Combination switch IPDM E/R
Battery saver control

Ignition switch

Combination switch

Front door switch LH and RH IPDM E/R
Headlamp Combination switch IPDM E/R
Tail lamp Combination switch IPDM E/R
Front fog lamp Combination switch IPDM E/R
Turn signal lamp Combination switch

Turn signal lamp

Combination meter
Hazard lamp Hazard switch

Turn signal lamp

Combination meter
Room lamp timer

Key switch

Remote keyless entry receiver (keyfob)

Main power window and door lock/unlock switch

Front door lock assembly LH (key cylinder switch)

All door switches Interior room lamp
Key warning chime

Key switch

Front door switch LH Combination meter (warning
buzzer)
Light warning chime

Combination switch

Key switch

Front door switch LH Combination meter (warning
buzzer)
Vehicle-speed-sensing intermittent
wiper

Combination switch

Combination meter IPDM E/R
Rear window defogger Rear window defogger switch IPDM E/R
Air conditioner switch signal Front air control ECM
Blower fan switch signal Front air control ECM
Low tire pressure warning system Remote keyless entry receiver

Combination meter

Display control unit
Trailer tow (if equipped) Combination switch Trailer turn signal relays
Vehicle security system

Remote keyless entry receiver (keyfob)

Main power window and door lock/unlock switch

Power window and door lock/unlock switch RH

Front door lock assembly LH (key cylinder switch)

All door switches

Back door latch (door ajar switch)

IPDM E/R

Security indicator lamp
System
InputOutput

POWER DOOR LOCK SYSTEMBL-17
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System DescriptionEIS005Z8
Power is supplied at all times

through 50A fusible link (letter f, located in the fuse and fusible link box)

to BCM terminal 70

through 15A fuse [No. 22, located in the fuse block (J/B)]

to BCM terminal 57

through 10A fuse [No. 19, located in the fuse block (J/B)]

to key switch and key lock solenoid terminal 3.
With ignition key inserted, power is supplied

through key switch and key lock solenoid terminal 4

to BCM terminal 37.
Ground is supplied to terminal 67 of BCM through body grounds M57, M61 and M79.
When the door is locked or unlocked with main power window and door lock/unlock switch, ground is supplied

to CPU of main power window and door lock/unlock switch

through main power window and door lock/unlock switch terminal 17

through grounds M57, M61 and M79.
Then main power window and door lock/unlock switch operation signal is supplied

to BCM terminal 22

through main power window and door lock/unlock switch terminal 14.
When the door is locked or unlocked with power window and door lock/unlock switch RH, ground is supplied

to CPU of power window and door lock/unlock switch RH

through power window and door lock/unlock switch RH terminal 11

through grounds M57, M61 and M79.
Then power window and door lock/unlock switch RH operation signal is supplied

to BCM terminal 22

through power window and door lock/unlock switch RH terminal 16.
When the door is locked with front door lock assembly LH (key cylinder switch), ground is supplied

to main power window and door lock/unlock switch terminal 4

through front door lock assembly LH (key cylinder switch) terminals 1 and 5

through grounds M57, M61 and M79.
Then front door lock assembly LH (key cylinder switch) operation signal is supplied

to BCM terminal 22

through main power window and door lock/unlock switch terminal 14.
When the door is unlocked with front door lock assembly LH (key cylinder switch), ground is supplied

to main power window and door lock/unlock switch terminal 6

through front door lock assembly LH (key cylinder switch) terminals 6 and 5

through grounds M57, M61 and M79.
Then front door lock assembly LH (key cylinder switch) operation signal is supplied

to BCM terminal 22

through main power window and door lock/unlock switch terminal 14.
BCM is connected to main power window and door lock/unlock switch and power window and door lock/unlock
switch RH through a bus.
When the front door switch LH is ON (door is open), ground is supplied

to BCM terminal 47

through front door switch LH terminal 2

through front door switch LH case ground.
When the front door switch RH is ON (door is open), ground is supplied

to BCM terminal 12

through front door switch RH terminal 2

POWER DOOR LOCK SYSTEMBL-25
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Terminals and Reference Value for BCMEIS005ZB
Work FlowEIS005ZC
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to BL-17, "
System Description" .
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to BL-29,
"Trouble Diagnoses Symptom Chart" .
4. Does power door lock system operate normally? OK: GO TO 5, NG: GO TO 3.
5. Inspection End.
Te r m i n a l Wire
Color Item
Condition Voltage (V)
(Approx.)
12 R/L Front door switch RH Door open (ON) → Door close (OFF) 0 → Battery voltage
13 GR Rear door switch RH Door open (ON) → Door close (OFF) 0 → Battery voltage
22 W/V Bus When ignition switch is ON or power
window timer operates
30 Y/BR Glass hatch switch Glass hatch switched released
→ Glass
hatch switched closed Battery voltage
→ 0
37 B/R Key switch and key lock sole-
noid (insert) Key inserted in IGN key cylinder (ON)
→
Key removed from IGN key cylinder (OFF) Battery voltage
→ 0
39 L CAN-H ——
40 P CAN-L ——
43 R/B Back door latch (door ajar
switch) Door open (ON)
→ Door close (OFF) 0 → Battery voltage
47 SB Front door switch LH Door open (ON) → Door close (OFF) 0 → Battery voltage
48 R/Y Rear door switch LH Door open (ON) → Door close (OFF) 0 → Battery voltage
53 L/W Glass hatch lock actuator Glass hatch switched released
→ Glass
hatch switch pressed 0
→ Battery voltage for 300 msec.
57 Y/R Battery power supply —Battery voltage
59 G Front door lock assembly LH
(actuator) (unlock) Driver door lock knob
(locked → unlocked) 0
→ Battery voltage
65 V All door lock actuators (lock) Driver door lock knob (neutral → lock) 0 → Battery voltage
66 G/Y Front door lock actuator RH,
rear door lock actuators LH/RH
and back door lock actuator
(unlock) Door lock and unlock switch (locked
→
unlocked) 0
→ Battery voltage
67 B Ground ——
70 W/B Battery power supply —Battery voltage
PIIA2344E

POWER DOOR LOCK SYSTEMBL-29
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Trouble Diagnoses Symptom ChartEIS005ZE
BCM Power Supply and Ground Circuit CheckEIS005ZF
1. CHECK FUSE AND FUSIBLE LINK
Check the following BCM fuse and fusible link.
NOTE:
Refer to BL-99, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of problem before installing new fuse, refer to PG-4,
"POWER SUPPLY ROUTING CIRCUIT" .
SymptomRepair orderRefer to page
Key reminder door function does not operate
properly. 1. Door switch check
BL-31
2. Key switch (insert) checkBL-33
3. Replace BCM.BCS-20
Power door lock does not operate with door lock
and unlock switch on main power window and
door lock/unlock switch or power window and
door lock/unlock switch RH.1. Door lock/unlock switch check
BL-34
2. Replace BCM.BCS-20
Front door lock assembly LH (actuator) does not
operate.1. Front door lock assembly LH (Actuator) check
BL-38
Specific door lock actuator does not operate.1. Front door lock actuator RH check
BL-392. Rear door lock actuator RH/LH checkBL-40
Power door lock does not operate with front door
key cylinder LH operation.1. Front door lock assembly LH (key cylinder
switch) check
BL-42
2. Replace BCM.
BCS-20
Power door lock does not operate.1. BCM power supply and ground circuit check
BL-292. Door lock/unlock switch checkBL-34
Back door opener does not operate.1. Back door power supply and ground circuit
inspection
BL-1152. Door switch check
BL-31
3. Power liftgate switch system inspectionBL-116
Glass hatch lock actuator does not operate
(RF door must be unlocked for normal opera-
tion).1. Glass hatch switch check
BL-36
2. Glass hatch lock actuator checkBL-41
3. Replace BCM.BCS-20
Component PartsTerminal No. (SIGNAL) AmpereNo. Location
BCM 57 (BAT power supply) 15A22 Fuse block (J/B)
BCM 70 (BAT power supply) 50AfFuse and fusible link box

POWER DOOR LOCK SYSTEMBL-35
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2. CHECK DOOR LOCK/UNLOCK SWITCH GROUND HARNESS
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch or power window and door lock/unlock switch RH
3. Check continuity between main power window and door lock/ unlock switch connector D8 terminal 17 and ground.
4. Check continuity between power window and door lock/unlock switch RH connector D105 terminal 11 and ground
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK POWER WINDOW BUS CIRCUIT FOR OPEN
1. Disconnect BCM.
2. Check continuity between BCM connector M18 terminal 22 and main power window and door lock/unlock switch connector D7
terminal 14.
3. Check continuity between BCM connector M18 terminal 22 and power window and door lock/unlock switch RH connector D105
terminal 16.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness. 17 - Ground
: Continuity should exist.
LIIA0392E
11 - Ground: Continuity should exist.
LIIA1140E
22 - 14 : Continuity should exist.
LIIA0394E
22 - 16: Continuity should exist.
LIIA1271E