2007 INFINITI QX56 oil pressure

ATC-160
< SERVICE INFORMATION >
REFRIGERANT LINES
8. Remove the rear high- and low-pressure pipes bracket bolt (A)to release the bracket.
• Rear blower motor (1)
•⇐ : Front
9. Remove the rear high- and low-pressure pipes bolt (A) to dis- connect the rear high- and low-pressure pipes from the rear
expansion valve (1).
•⇐ : Front
CAUTION:
Cap or wrap the joint of the pipes with suitable material
such as vinyl tape to avoid the entry of air.
10. Disconnect the following electrical connectors: • Rear air mix door motor (1)
• Rear blower motor resistor (2)
• Rear blower motor (3)
•⇐ : Front
11. Disconnect the ducts from the rear heater and cooling unit assembly. Refer to ATC-145, "
Component".
12. Remove the rear heater and cooling unit assembly. CAUTION:
Cap or wrap the joint of the pipes with suitable material such as viny l tape to avoid the entry of air.
13. Remove the rear high- and low-pressure A/C pipes.
INSTALLATION
Installation is in the reverse order of removal.
Refer to ATC-152, "
Component".
CAUTION:
• Replace the O-ring of th e high/low-pressure pipe with a new one, then apply compressor oil to it
when installing it.
• After charging refrigerant, check for leaks.
Removal and Installati on for Underfloor Rear High- and Low-Pressure A/C and Heater
Core Pipes
INFOID:0000000003533300
REMOVAL
1. Drain the coolant from the engine cooling system. Refer to CO-9, "Changing Engine Coolant".
2. Disconnect the battery negative terminal.
3. Disconnect the generator harness.
4. Discharge the refrigerant. Refer to ATC-150, "
HFC-134a (R-134a) Service Procedure".
WJIA2312E
WJIA2313E
WJIA2314E

REFRIGERANT LINESATC-161
< SERVICE INFORMATION >
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5. Remove the front and rear bumper fascia. Refer to EI-12 (front), EI-14 (rear).
6. Reposition the front fender protector out of the way. Refer to EI-22
.
7. Disconnect the chassis harness connector.
8. Remove the spare wheel and tire.
9. Remove the tailpipe and tailpipe hanger bracket. Refer to EX-3, "
Removal and Installation".
10. Remove the seatbelt latch anchor. Refer to RSU-21, "
Component".
11. Remove the front floor heat shield.
12. Disconnect each end of the underfloor rear high- and low-pressure A/C and heater core pipes. Refer to
ATC-152, "
Component".
CAUTION:
Cap or wrap the joint of the pipes with suitable material such as viny l tape to avoid the entry of air.
13. Set two suitable jacks at the RH body mount points to support the vehicle body when it is separated from the RH side of the frame.
14. Remove the RH body mount bolts. Refer to BL-135, "
Body Mounting".
15. Use the vehicle hoist to lower the RH side of the frame from the RH side of the body [approximately 305
mm (12 in)] until there is sufficient clearance to remove the underfloor rear high- and low-pressure A/C
and heater core pipes from between the body and the frame.
16. Remove the underfloor rear high- and low-pressure A/ C and heater core pipes from the back of the vehi-
cle.
INSTALLATION
Installation is in the reverse order of removal.
Refer to ATC-152, "
Component".
CAUTION:
• Replace the O-ring of the high/low-pressure pipe with a new one, then apply compressor oil to it
when installing it.
• After charging refrigerant, check for leaks.
Removal and Installation for Refrigerant Pressure SensorINFOID:0000000003533301
REMOVAL
1. Discharge the refrigerant. Refer to ATC-150, "HFC-134a (R-134a) Service Procedure".
2. Disconnect the refrigerant pressu re sensor electrical connector
and remove the refrigerant pressure sensor from the condenser.
CAUTION:
Be careful not to damage the condenser fins.
INSTALLATION
Installation is in the reverse order of removal.
Refer to ATC-152, "
Component".
CAUTION:
• Be careful not to damage the condenser fins.
• Replace the O-ring of the refrig erant pressure sensor with a new one, then apply compressor oil to it
when installing it.
• After charging refrigerant, check for leaks.
Removal and Installation for CondenserINFOID:0000000003533302
REMOVAL
1. Discharge the refrigerant. Refer to .
LJIA0145E

ATC-162
< SERVICE INFORMATION >
REFRIGERANT LINES
2. Remove the radiator. Refer to CO-13.
CAUTION:
Be careful not to damage the core su rface of the condenser and the radiator.
3. Disconnect the high-pressure flexible hose and the high-pressure pipe from the condenser.
CAUTION:
Cap or wrap the joint of the pipe with suitable ma terial such as vinyl tape to avoid the entry of air.
4. Disconnect the refrigerant pressure sensor connector. • Remove the refrigerant pressure sensor from the condenseras necessary.
5. Lift the condenser out of the mounting grommets to remove the condenser.
INSTALLATION
Installation is in the reverse order of removal.
Refer to ATC-152, "
Component".
CAUTION:
• Replace the O-rings of the high-p ressure pipe, refrigerant pressure sensor, and high-pressure flexi-
ble hose with new ones, then apply compr essor oil to them when installing them.
• After charging refrigerant, check for leaks.
• Replace the grommets as necessary.
LJIA0145E

ATC-164
< SERVICE INFORMATION >
REFRIGERANT LINES
4. Remove the evaporator.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Replace the O-rings on the low-pressure flexible hose and the hi gh-pressure pipe with new ones.
Apply compressor oil to the O- rings when installing them.
Removal and Installation for Rear EvaporatorINFOID:0000000003533304
Rear Heater and Cooling Unit Assembly
REMOVAL
1. Remove the rear heater and cooling unit assembly from the vehicle. Refer\
to ATC-133, "Removal and
Installation".
2. Remove the rear blower motor.
LJIA0135E
1. Front cover 2. Evaporator and heater core case 3. Evaporator
4. Side cover 5. Heater core 6. Rear blower motor
7. Blower motor case 8. Rear blower motor resistor

ATC-166
< SERVICE INFORMATION >
REFRIGERANT LINES
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 of Refrigerant LeaksINFOID:0000000003533307
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 indi cate an area of refrigerant leakage. Allow extra
inspection time in these areas when using either an el ectronic 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 l eak detector probe slower and clo ser to the suspected leak area will
improve the chances of finding a leak.
Checking System for L eaks Using the Fluoresc ent Dye Leak DetectorINFOID:0000000003533308
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). Il luminate 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 asse mbly 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 fl uorescent 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 t he 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 tri gger 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 refri gerant leak detector (J-41995) to contact with any sub-
stance. This can also cause false readings and may damage the detector.
Dye InjectionINFOID:0000000003533309
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).
2. Pour one bottle 7.4 cc (1/4 ounce) of the HFC-134a (R -134a) fluorescent leak detection dye (J-41447) into
the HFC-134a (R-134a) dye injector (J-41459).
CAUTION: Expansion valve bolts : 4 N·m (0.41 kg-m, 35 in-lb)
A/C refrigerant pipe to exp
ansion valve bolt : Refer to ATC-152, "
Component".

REFRIGERANT LINESATC-167
< SERVICE INFORMATION >
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If repairing the A/C system or replacing a com ponent, pour the HFC-134a (R-134a) fluorescent leak
detection dye (J-41447) directly into the open system connection and proceed with the service
procedures.
3. Connect the refrigerant dye injector (J- 41459) to the low-pressure service valve.
4. Start the engine and switch the A/C system ON.
5. When the A/C system is operating (compressor runni ng), inject one bottle 7.4 cc (1/4 ounce) of HFC-134a
(R-134a) fluorescent leak detection dye (J-41447) th rough the low-pressure service valve using HFC-
134a (R-134a) dye injector (J-41459). Refer to the manufacturer's operating instructions.
6. With the engine still running, disconnect the HFC-134a (R -134a) dye injector (J-41459) from the low-pres-
sure service valve.
7. Operate the A/C system for a minimum of 20 minut es to mix the HFC-134a (R-134a) fluorescent leak
detection dye (J-41447) with the A/C system oil. Depending on the leak size, operating conditions and
location of the leak, it may take from minutes to days for the HFC-134a (R-134a) fluorescent leak detec-
tion dye to penetrate an A/C system leak and become visible.
Electronic Refrigerant Leak DetectorINFOID:0000000003533310
PRECAUTIONS FOR HANDLING LEAK DETECTOR
NOTE:
When performing a refrigerant leak check, use a electr onic refrigerant leak detector (J-41995) or equivalent.
Ensure that the electronic refrigerant leak detector (J-41995) is calibrated and set properly according to the
manufacturer's operating instructions.
The electronic refrigerant leak detector (J-41995) is a delicate
device. To use the electronic refrigerant leak detector (J-41995)
properly, read the manufacturer's operating instructions and perform
any specified maintenance.
1. Position the probe approximately 5 mm (3/16 in) away from the point to be checked as shown.
2. When checking for leaks, circle each fitting completely with the probe as shown.
AHA281A
SHA707EA
SHA706E

BCM (BODY CONTROL MODULE)
BCS-17
< SERVICE INFORMATION >
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CONSULT-II START PROCEDURE
Refer to GI-36, "CONSULT-II Start Procedure".
ITEMS OF EACH PART
NOTE:
CONSULT-II will only display systems the vehicle possesses.
WORK SUPPORT
BCM diagnostic
test itemDiagnostic mode Content
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the BCM for
setting the status suitable for required operation, input/output signals are received
from the BCM and received data is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT
MNTRThe results of transmit/receive diagnosis of CAN communication can be read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.
System and itemCONSULT-II
displayDiagnostic test mode (Inspection by part)
WORK
SUPPORTSELF−
DIAG RE-
SULTSCAN DIAG
SUPPORT
MNTRDATA
MONITORECU
PA R T
NUMBERAC-
TIVE
TESTCON-
FIGU-
RATION
BCM BCM×× × × ×
Power door lock system DOOR LOCK×××
Rear defoggerREAR
DEFOGGER××
Warning chime BUZZER××
Room lamp timer INT LAMP×××
Remote keyless entry
systemMULTI REMOTE
ENT×××
Headlamp HEAD LAMP×××
Wiper (front/rear) WIPER×××
Turn signal lamp
Hazard lampFLASHER××
Blower fan switch signal
Air conditioner switch
signalAIR
CONDITIONER×
Combination switch COMB SW×
IVIS (NATS) IMMU××
Interior lamp battery
saverBATTERY SAV-
ER×××
Back door TRUNK××
Theft alarm THEFT ALM×××
Retained accessory
power controlRETAINED PWR×××
Oil pressure switch SIGNAL BUFFER××
Low tire pressure moni-
tor systemAIR PRESSURE
MONITOR×× × ×
Panic alarm PANIC ALARM×

CO-4
< SERVICE INFORMATION >
PREPARATION
PREPARATION
Special Service ToolINFOID:0000000003531564
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service ToolINFOID:0000000003531565
Tool number
(Kent-Moore No.)
Tool nameDescription
K V 1 0 1111 0 0
(J-37228)
Seal cutterRemoving steel oil pan and rear timing chain
case
WS39930000
(—)
Tube pressurePressing the tube of liquid gasket
EG17650301
(J-33984-A)
Radiator cap tester adapterAdapting radiator cap tester to radiator cap
and radiator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
KV991J0070
(J-45695)
Coolant refill toolFor refilling engine cooling system
KV991J0010
(J-23688)
Engine coolant refractometerChecking concentration of ethylene glycol in
engine coolant
NT046
S-NT052
S-NT564
LMA053
WBIA0539E