2007 INFINITI QX56 Factory Service Manual

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Page 497 of 3061

INFINITI QX56 2007 Factory Service Manual
INTAKE SENSORATC-127
< SERVICE INFORMATION >
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INTAKE SENSOR
Removal and InstallationINFOID:0000000003533274
REMOVAL
1. Remove the glove box . Refer to IP-10, "Removal

Page 498 of 3061

INFINITI QX56 2007 Factory Service Manual
ATC-128
< SERVICE INFORMATION >
BLOWER MOTOR
BLOWER MOTOR
ComponentINFOID:0000000003533275
Front Blower MotorRear Blower Motor
Removal and InstallationINFOID:0000000003533276
FRONT BLOWER MOTOR
Remov

Page 499 of 3061

INFINITI QX56 2007 Factory Service Manual
BLOWER MOTORATC-129
< SERVICE INFORMATION >
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REAR BLOWER MOTOR
Removal
1. Remove the luggage side lower finisher RH. Refer to EI-39.
2. Disconnect the rear blower mo

Page 500 of 3061

INFINITI QX56 2007 Factory Service Manual
ATC-130
< SERVICE INFORMATION >
IN-CABIN MICROFILTER
IN-CABIN MICROFILTER
Removal and InstallationINFOID:0000000003533277
FUNCTION
The air inside the passenger compartment is filtered by the in-cabin

Page 501 of 3061

INFINITI QX56 2007 Factory Service Manual
IN-CABIN MICROFILTERATC-131
< SERVICE INFORMATION >
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5. Install the in-cabin microfilter cover.
6. Install the lower glove box in the instrument panel and secure it w

Page 502 of 3061

INFINITI QX56 2007 Factory Service Manual
ATC-132
< SERVICE INFORMATION >
HEATER & COOLING UNIT ASSEMBLY
HEATER & COOLING UNIT ASSEMBLY
ComponentINFOID:0000000003533278
Front Heater and Cooling Unit Assembly
AWJIA0319ZZ
1. High-pressure A/C

Page 503 of 3061

INFINITI QX56 2007 Factory Service Manual
HEATER & COOLING UNIT ASSEMBLYATC-133
< SERVICE INFORMATION >
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Rear Heater and Cooling Unit Assembly
Removal and InstallationINFOID:0000000003533279
FRONT HEATER AND

Page 504 of 3061

INFINITI QX56 2007 Factory Service Manual
ATC-134
< SERVICE INFORMATION >
HEATER & COOLING UNIT ASSEMBLY
5. Disconnect the front heater hoses from the front heater core.
6. Disconnect the high/low pressure pipes from the front expansion valv

ATC-134
< SERVICE INFORMATION >
HEATER & COOLING UNIT ASSEMBLY
5. Disconnect the front heater hoses from the front heater core.
6. Disconnect the high/low pressure pipes from the front expansion valve.
7. Remove the instrument panel and console panel. Refer to IP-10, "
Removal and Installation".
8. Remove the steering column. Refer to PS-10
.
9. Disconnect the instrument panel wire harness at the RH and LH in-line connector brackets, and the fuse
block (J/B) electrical connectors. Refer to PG-3
.
10. Disconnect the steering member from each side of the vehicle body.
11. Remove the front heater and cooling unit assembly with it attached to the steering member, from the vehi-
cle.
CAUTION:
Use care not to damage the seats and interior tr im panels when removing the front heater and
cooling unit assembly with it at tached to the steering member.
12. Remove the front heater and cooling unit assembly from the steering member.
Installation
Installation is in the reverse order of removal.
CAUTION:
• Replace the O-ring of the low-pressure pipe and high-pressure pipe with a new one, and apply com-
pressor oil to it when installing it.
• After charging the refrigerant, check for leaks.
NOTE:
• Fill the engine cooling system with the s pecified coolant mixture. Refer to MA-12, "
Changing Engine Cool-
ant".
• Recharge the A/C system. Refer to ATC-150, "
HFC-134a (R-134a) Service Procedure".
REAR HEATER AND COOLING UNIT ASSEMBLY
Removal
1. Discharge the refrigerant from the A/C system. Refer to ATC-150, "HFC-134a (R-134a) Service Proce-
dure".
2. Drain the coolant from the engine cooling system. Refer to MA-12, "
Changing Engine Coolant".
3. Disconnect the rear heater core hoses from the rear heater core.
4. Disconnect the rear A/C pipes from the rear expansion valve.
5. Remove the luggage side finisher lower RH. Refer to EI-34
.
6. Disconnect the following electrical connectors: • Rear blower motor
• Rear blower motor resistor
• Rear air mix door motor
7. Disconnect the ducts from the rear heater and cooling unit assembly.
8. Remove the rear heater and cooling unit assembly.
Installation
Installation is in the reverse order of removal.
CAUTION:
• Replace the O-ring of the low-pressure pipe and high-pressure pipe with a new one, and apply com-
pressor oil to it when installing it.
• After charging the refrigerant, check for leaks.
NOTE:
• Fill the engine cooling system with the s pecified coolant mixture. Refer to MA-12, "
Changing Engine Cool-
ant".
• Recharge the A/C system. Refer to ATC-150, "
HFC-134a (R-134a) Service Procedure".
LJIA0021E

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