2008 INFINITI QX56 Factory Service Manual

display relay gearbox change wheel fuel pump fuse

Page 2233 of 4083

INFINITI QX56 2008 Factory Service Manual HA-28
< ON-VEHICLE MAINTENANCE >
ELECTRICAL LEAK DETECTOR
Keep the probe inserted for at least 10 seconds. Use caution not to contaminate the probe tip with water
or dirt that may be in the drain hose

HA-28
< ON-VEHICLE MAINTENANCE >
ELECTRICAL LEAK DETECTOR
Keep the probe inserted for at least 10 seconds. Use caution not to contaminate the probe tip with water
or dirt that may be in the drain hose.
5. If a leak is detected, verify at least once by blowing compressed air into the area of the suspected leak, then repeat the leak check.
6. Do not stop when one leak is found. Continue to check for additional leaks at all system components and connections.
7. If no leaks are found, perform steps 8 - 11.
8. Start the engine.
9. Set the heater A/C controls as follows: NOTE:
For the automatic system, turn OF F the automatic controls and set the heater A/C controls manually.
a. A/C switch to ON
b. Air flow to VENT mode
c. Intake position to RECIRCULATION mode
d. Temperature to MAX cold
e. Blower fan speed to HIGH
10. Run the engine at 1,500 rpm for at least 2 minutes.
11. Turn the engine OFF and perform the leak check again following steps 4 through 6 above.
Refrigerant leaks should be checked immediately after turning
the engine OFF. Begin with the leak detector at the compressor.
The pressure on the high pressure side will gradually drop after
the refrigerant circulation stops and pressure on the low pres-
sure side will gradually rise, as shown in the graph. Some leaks
are more easily detected when the pressure is high.
12. Before connecting the recovery/recycling equipment to the vehicle, check the recovery/recycling equip-
ment gauges. No refrigerant pressure should be displayed. If pressure is displayed, recover the refriger-
ant from the equipment lines and t hen check the refrigerant purity.
13. Confirm refrigerant purity in supply tank using recovery/recycling equipment and refrigerant identifier
equipment (J-41810-NI).
14. Confirm the refrigerant purity in the vehicle's A/C system using recovery/recycling equipment and refriger-
ant identifier equipment (J-41810-NI).
15. Discharge the A/C system using recovery/recycling equipment. Repair the leaking fitting or component as
necessary.
16. Evacuate and recharge the A/C system and perform the leak test to confirm th\
at there are no refrigerant leaks.
17. Conduct the Operational Check to ensure system works properly. Refer to HAC-108,
"SymptomMatrixChart" and HAC-110, "Diagnostic Work Flow".
SHA839E
Revision: March 2010 2008 QX56

Page 2234 of 4083

INFINITI QX56 2008 Factory Service Manual REFRIGERATION SYSTEMHA-29
< ON-VEHICLE REPAIR >
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ON-VEHICLE REPAIR
REFRIGERATION SYSTEM
ComponentINFOID:0000000001516651
Front A/C System
WJIA1578E
Revision: March 2010

Page 2235 of 4083

INFINITI QX56 2008 Factory Service Manual HA-30
< ON-VEHICLE REPAIR >
REFRIGERATION SYSTEM
Rear A/C System
NOTE:
Refer to HA-5, "
Precaution for Refrigerant Connection".
1. High-pressure service valve 2. Grommet 3. High-pressure pipe
4. Refri

Page 2236 of 4083

INFINITI QX56 2008 Factory Service Manual COMPRESSORHA-31
< ON-VEHICLE REPAIR >
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COMPRESSOR
Removal and Installation for CompressorINFOID:0000000001516652
A/C Compressor Mounting
REMOVAL
1. Discharge the refrige

Page 2237 of 4083

INFINITI QX56 2008 Factory Service Manual HA-32
< ON-VEHICLE REPAIR >
COMPRESSOR
• Replace the O-rings of the low-pressure flexible hose and high-pressure flexible hose with new
ones, apply compressor oil to the O-rings when installing the

Page 2238 of 4083

INFINITI QX56 2008 Factory Service Manual COMPRESSORHA-33
< ON-VEHICLE REPAIR >
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5. Remove the pulley using suitable tool ( A ).
CAUTION:
To prevent deformation of the pulley groove, the puller claws should be

Page 2239 of 4083

INFINITI QX56 2008 Factory Service Manual HA-34
< ON-VEHICLE REPAIR >
COMPRESSOR
1. Install the magnet coil.CAUTION:
Be sure to align the magnet coil pin with the hole in the
compressor front head.
2. Install the pulley assembly using Tool a

Page 2240 of 4083

INFINITI QX56 2008 Factory Service Manual COMPRESSORHA-35
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5. Check the pulley clearance all the way around the clutch disc as shown.
6. If the specified clearance is not obtained, replace

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