Infiniti QX56 (JA60). Manual — part 992
PRECAUTIONS
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< PRECAUTION >
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5. When the repair work is completed, return the ignition switch to the
″LOCK″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-III.
Precaution for Working with HFC-134a (R-134a)
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WARNING:
• CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. If the refrigerants
are mixed compressor failure is likely to occur. Refer to
HA-4, "Contaminated Refrigerant"
. To deter-
mine the purity of HFC-134a (R-134a) in the vehicle and recovery tank, use recovery/recycling equip-
ment and refrigerant identifier.
• Use only specified oil for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) components. If
oil other than that specified is used, compressor failure is likely to occur.
• The specified HFC-134a (R-134a) oil rapidly absorbs moisture from the atmosphere. The following
handling precautions must be observed:
- When removing refrigerant components from a vehicle, immediately cap (seal) the component to
minimize the entry of moisture from the atmosphere.
- When installing refrigerant components to a vehicle, do not remove the caps (unseal) until just
before connecting the components. Connect all refrigerant loop components as quickly as possible
to minimize the entry of moisture into system.
- Only use the specified oil from a sealed container. Immediately reseal containers of oil. Without
proper sealing, oil will become moisture saturated and should not be used.
- Avoid breathing A/C refrigerant and oil vapor or mist. Exposure may irritate eyes, nose and throat.
Remove HFC-134a (R-134a) from the A/C system using certified service equipment meeting require-
ments of SAE J2210 [HFC-134a (R-134a) recycling equipment], or J2209 [HFC-134a (R-134a) recovery
equipment]. If accidental system discharge occurs, ventilate work area before resuming service.
Additional health and safety information may be obtained from refrigerant and oil manufacturers.
- Do not allow A/C oil to come in contact with styrofoam parts. Damage may result.
Precaution for Procedure without Cowl Top Cover
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When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
PIIB3706J
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< PREPARATION >
PREPARATION
PREPARATION
PREPARATION
Commercial Service Tool
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Tool name
Description
Power tool
Loosening bolts, screws and nuts
PIIB1407E
IN-CABIN MICROFILTER
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< FUNCTION DIAGNOSIS >
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FUNCTION DIAGNOSIS
IN-CABIN MICROFILTER
Description
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FUNCTION
The air inside the passenger compartment is filtered by the in-cabin
microfilters when the heater or A/C controls are set on either the
recirculation or fresh mode. The two in-cabin microfilters are located
in the front heater and cooling unit assembly. The rear heater and
cooling unit assembly only draws in air from the passenger compart-
ment to recirculate into the passenger compartment, so the rear
heater and cooling unit assembly is not equipped with in-cabin
microfilters.
REPLACEMENT TIMING
Replacement of the two in-cabin microfilters is recommended on a regular interval depending on the driving
conditions. Refer to
MA-9, "Introduction of Periodic Maintenance"
. It may also be necessary to replace the two
in-cabin microfilters as part of a component replacement if the in-cabin microfilters are damaged.
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< ON-VEHICLE MAINTENANCE >
IN-CABIN MICROFILTER
ON-VEHICLE MAINTENANCE
IN-CABIN MICROFILTER
Removal and Installation
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REPLACEMENT PROCEDURE
1. Remove the glove box assembly from the instrument panel. Refer to
IP-17, "Removal and Installation"
.
2. Remove the screw and remove the in-cabin microfilter cover as
shown.
3. Remove the two in-cabin microfilters from the front heater and
cooling unit assembly housing.
4. Insert the first new in-cabin microfilter into the front heater and
cooling unit assembly housing and slide it over to the right.
Insert the second new in-cabin microfilter into the front heater
and cooling unit assembly housing as shown.
NOTE:
The in-cabin microfilters are marked with air flow arrows. The
end of the microfilter with the arrow should face the rear of the
vehicle. The arrows should point downward.
5. Install the in-cabin microfilter cover.
6. Install the glove box assembly in the instrument panel. Refer to
IP-17, "Removal and Installation"
.
7. Fill out the date information on the small replacement label and attach it to the glove box lid.
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