Automatic Air Conditioner: Removal & Installation Nissan Maxima A34

INSTALLATION

Installation is in the reverse order of removal.

Scheme 84

1. Disconnect the ambient sensor connector.
2. Release the ambient sensor clip.
3. Remove the ambient sensor.

Installation is in the reverse order of removal.

Scheme 85

1. Remove the lower driver instrument panel assembly. Refer to «LOWER DRIVER INSTRUMENT PANEL»(ref-233659-S05764257672006052600000) .
2. Remove the in-vehicle sensor screw.
3. Remove the in-vehicle sensor.

Installation is in the reverse order of removal.

Scheme 86

1. Remove the instrument mask.
2. Release the sunload sensor tabs and then remove the sunload sensor from the instrument mask.
3. Disconnect the sunload sensor connector.
4. Remove the sunload sensor.

Installation is in the reverse order of removal.

Scheme 87

1. Remove the evaporator. Refer to «REMOVAL AND INSTALLATION FOR EVAPORATOR»(ref-233653-S25727627962006052600000) .
2. Remove the intake sensor clip. CAUTION: Be careful not to damage the evaporator core surface.
3. Remove the intake sensor.

Installation is in the reverse order of removal.

Scheme 88

1. Remove the glove box assembly. Refer to «INSTRUMENT LOWER COVER RH AND GLOVE BOX»(ref-233659-S02604398812006052600000) .
2. Remove the center console side cover. Refer to «CENTER CONSOLE»(ref-233659-S28224378702006052600000) .
3. Remove the ECM.
4. Disconnect the blower motor, intake door motor, and fan control amp. connector.
5. Disconnect the main harness from the top of the blower unit.
6. Remove the two bolts and one screw from the blower unit as shown.
7. Remove the blower unit.

Installation is in the reverse order of removal.

Scheme 89

1. Remove the blower unit. Refer to «REMOVAL AND INSTALLATION»(ref-233653-S10695822442006052600000) .
2. Release the eight tabs attaching the blower motor to the blower unit case.
3. Remove the blower motor.

Installation is in the reverse order of removal.

Scheme 90

1. Remove the blower unit. Refer to «REMOVAL AND INSTALLATION»(ref-233653-S10695822442006052600000) .
2. Remove the two intake door motor screws.
3. Remove the intake door motor from the blower unit.

Installation is in the reverse order of removal.

REPLACEMENT TIMING

Replace the in-cabin microfilter by following the applicable maintenance schedule. Refer to SCHEDULE 1 and SCHEDULE 2 . The caution label is affixed inside the glove box.

Scheme 91

Scheme 92

1. Remove the glove box pins. Refer to «INSTRUMENT LOWER COVER RH AND GLOVE BOX»(ref-233659-S02604398812006052600000) .
2. Press in the sides of the glove box door to release the glove box door from the glove box housing.
3. Disconnect the glove box damper cord to remove the glove box door.
4. Disengage the two filter cover tabs to remove the filter cover.
5. Remove the in-cabin microfilter from the blower unit.
6. Install the new in-cabin microfilter into the blower unit. CAUTION: Insert the new filter with the "UP" arrow in the correct orientation. Insert the new filter with the "UP" arrow side of the filter facing the rear of the vehicle.
7. Install the filter cover on the blower unit.
8. Connect the glove box damper cord to the glove box door.
9. Press in the sides of the glove box door to install the glove box door into the glove box housing.
10. Install the glove box pins.

Scheme 93

1. Discharge the refrigerant from the A/C system. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-233653-S16640295362006052600000)
2. Drain the coolant from the cooling system. Refer to «CHANGING ENGINE COOLANT»(ref-233644-S16252982522006052600000) .
3. Disconnect the heater hoses from the heater core pipes.
4. Disconnect the refrigerant lines from the evaporator.
5. Remove the instrument panel. Refer to «INSTRUMENT PANEL ASSEMBLY»(ref-233659-S33210817362006052600000) .
6. Remove the blower unit. Refer to «BLOWER UNIT»(ref-233653-S32819963962006052600000) .
7. Disconnect the mode door motor and the air mix door motor connectors.
8. Remove the heater and cooling unit.

Installation is in the reverse order of removal.

Note. Fill the radiator with coolant. Refer to REFILLING ENGINE COOLANT . Recharge the A/C system. Refer to HFC-134A (R-134A) SERVICE PROCEDURE .

Scheme 94

Scheme 95

Scheme 96

Scheme 97

1. Remove the heater and cooling unit. Refer to «HEATER & COOLING UNIT ASSEMBLY»(ref-233653-S25518679612006052600000) .
2. Remove the heater core pipe support screws and then remove the heater core pipe support.
3. Remove the air mix door motor (passenger side).
4. Remove the heater core cover screws and then remove the heater core cover.
5. Remove the heater core.

Installation is in the reverse order of removal.

Scheme 98

1. Remove the driver lower instrument panel assembly. Refer to «LOWER DRIVER INSTRUMENT PANEL»(ref-233659-S05764257672006052600000) .
2. Disconnect the mode door motor connector.
3. Remove the mode door motor screws and then remove the mode door motor.

Installation is in the reverse order of removal.

Scheme 99

1. Remove the driver lower instrument panel assembly. Refer to «LOWER DRIVER INSTRUMENT PANEL»(ref-233659-S05764257672006052600000) .
2. Disconnect the driver side air mix door motor connector.
3. Remove the driver side air mix door motor screws.
4. Remove the driver side air mix door motor.

Installation is in the reverse order of removal.

Scheme 100

1. Remove the instrument passenger lower panel. Refer to «INSTRUMENT LOWER COVER RH AND GLOVE BOX»(ref-233659-S02604398812006052600000) .
2. Disconnect the passenger side air mix door motor connector.
3. Remove the passenger side air mix door motor screws.
4. Remove the passenger side air mix door motor.

Installation is in the reverse order of removal.

Scheme 101

1. Disconnect the fan control amp. connector.
2. Remove the screws from the fan control amp.
3. Remove the fan control amp.

Installation is in the reverse order of removal.

Scheme 102

Scheme 103

1. Remove the shift knob.
2. Remove the shift bezel.
3. Remove cluster lid C. Refer to «CLUSTER LID C»(ref-233659-S22039194722006052600000) .
4. Remove cluster lid D. Refer to «CLUSTER LID D»(ref-233659-S16700258672006052600000) .
5. Release the tabs to remove each of the two center ventilator grilles.

Installation is in the reverse order of removal.

Scheme 104

1. Remove the instrument panel. Refer to «REMOVAL AND INSTALLATION»(ref-233659-S22638579602006052600000) .
2. Release the tabs to remove side ventilator grille LH.

Installation is in the reverse order of removal.

Scheme 105

1. Remove the instrument panel. Refer to «REMOVAL AND INSTALLATION»(ref-233659-S22638579602006052600000) .
2. Release the tabs to remove side ventilator grille RH.

Installation is in the reverse order of removal.

Scheme 106

1. Remove the carpet. Refer to «FLOOR TRIM»(ref-233645-S26978688732006052600000) .
2. Remove the two clips.
3. Remove the floor ducts.

Installation is in the reverse order of removal.

REMOVAL

1. Discharge the refrigerant. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-233653-S16640295362006052600000) .
2. Remove the drive belt. Refer to «DRIVE BELTS»(ref-233644-S15739428032006052600000) .
3. Remove the coolant pipe bracket bolt.
4. Remove the compressor mounting stud.
5. Disconnect the compressor connector.
6. Remove the high-pressure flexible hose and low-pressure flexible hose. CAUTION: Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.
7. Remove the mounting bolts and nut from compressor using power tools.

Installation is in the reverse order of removal.

Compressor mounting bolts (rear side): 56.9 - 65.7 N.m (5.8 - 6.7 kg-m, 42 - 48 ft-lb)

Compressor (front side) bolt: 28.4 - 33.3 N.m (2.9 - 3.4 kg-m, 21 - 24 ft-lb)

Compressor (front side) nut: 59.8 - 69.6 N.m (6.1 - 7.0 kg-m, 45 - 51 ft-lb)

High-and low-pressure flexible hose bolts: 7.8 -19.6 N.m (0.8 - 1.9 kg-m, 69 - 173 in-lb)

Scheme 107

Scheme 108

Scheme 109

Scheme 110

Scheme 111

1. Remove the compressor. Refer to «REMOVAL AND INSTALLATION FOR COMPRESSOR»(ref-233653-S29634147182006052600000) .
2. Remove the center bolt by holding the clutch disc steady using Tool. Tool number: (J-44614)
3. Remove the clutch disc.
4. Remove the snap ring using external snap ring pliers.
5. Remove the pulley assembly using Tool. Use a pulley puller with a small adapter. Position the small adapter on the end of the compressor shaft and the center of the puller on the small adapter as shown. Tool number: KV99233130 (J-29884) CAUTION: To prevent deformation of the pulley groove, the puller claws should be hooked under (not into) the pulley groove.
6. Remove the snap ring using external snap ring pliers.
7. Remove the magnet coil harness clip using a screwdriver.
8. Remove the three magnet coil screws and remove the magnet coil.

1. Discharge the refrigerant. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-233653-S16640295362006052600000) .
2. Remove the refrigerant pressure sensor.
3. Remove the low-pressure flexible hose. Refer to «COMPONENTS»(ref-233653-S09365557372006052600000) . CAUTION: Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.

Installation is in the reverse order of removal.

Low-pressure flexible hose (evaporator side) bolt: 2.9 - 5.9 N.m (0.29 - 0.60 kg-m, 26 - 52 in-lb)

Low-pressure flexible hose (compressor side) bolt: 7.8 -19.6 N.m (0.8 - 1.9 kg-m, 69 - 173 in-lb)

Low-pressure flexible hose (in-line connection) bolt: 7.8 - 19.6 N.m (0.8 - 1.9 kg-m, 69- 173 in-lb)

1. Discharge the refrigerant. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-233653-S16640295362006052600000) .
2. Reposition the power steering reservoir out of the way without disconnecting the hose.
3. Reposition the engine coolant reservoir out of the way without disconnecting the hose.
4. Remove the high-pressure flexible hose. Refer to «COMPONENTS»(ref-233653-S09365557372006052600000) . CAUTION: Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.

Installation is in the reverse order of removal.

High-pressure flexible hose bolt: 7.8 - 19.6 N.m (0.8 - 1.9 kg-m, 69 - 173 in-lb)

1. Discharge the refrigerant. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-233653-S16640295362006052600000) .
2. Reposition the power steering reservoir out of the way without disconnecting the hose.
3. Reposition the engine coolant reservoir out of the way without disconnecting the hose.
4. Remove the high-pressure pipe. Refer to «COMPONENTS»(ref-233653-S09365557372006052600000) . CAUTION: Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.

Installation is in the reverse order of removal.

High-pressure pipe (evaporator side) bolt: 2.9 - 5.9 N.m (0.29 - 0.60 kg-m, 26 - 52 in-lb)

High-pressure pipe (condenser side) bolt: 7.8 - 19.6 N.m (0.8 - 1.9 kg-m, 69 - 173 in-lb)

Scheme 112

1. Discharge the refrigerant. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-233653-S16640295362006052600000) .
2. Disconnect the refrigerant pressure sensor connector and remove the refrigerant pressure sensor from condenser. CAUTION: Do not to damage the condenser fins.

Installation is in the reverse order of removal.

Refrigerant pressure sensor: 9.8 - 11.7 N.m (1.0 - 1.2 kg-m, 7.3 - 8.6 ft-lb)

Scheme 113

Scheme 114

1. Discharge the refrigerant. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-233653-S16640295362006052600000) .
2. Remove the radiator. Refer to «RADIATOR»(ref-233648-S19619550462006052600000) . CAUTION: Be careful not to damage the core surface 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 material such as vinyl tape to avoid the entry of air.
4. Disconnect the refrigerant pressure sensor connector.
5. Carefully release retaining clips located on top driver side of condenser and rotate the condenser out of its mounts as shown.

Installation is in the reverse order of removal.

High-pressure flexible hose and pipe bolt: 7.8 - 19.6 N.m, (0.8 - 1.9 kg-m, 69 - 173 in-lb)

Condenser mounting nuts: 5.0 - 6.79 N.m (0.51 - 0.69 kg-m, 45 - 60 in-lb)

Scheme 115

Scheme 116

Scheme 117

Scheme 118

1. Evacuate and recover the A/C system refrigerant. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-233653-S16640295362006052600000) .
2. Disconnect the battery negative terminal.
3. Remove the air cleaner to electronic throttle control actuator tube. Refer to «AIR CLEANER AND AIR DUCT»(ref-233643-S25169891552006052600000) . NOTE: The tube is located between the air cleaner assembly and the intake manifold and is removed to access the expansion valve.
4. Disconnect the A/C pipe from the expansion valve. CAUTION: Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.
5. Remove the expansion valve.
6. Remove the center console side finisher RH. Refer to «INSTRUMENT PANEL ASSEMBLY»(ref-233659-S33210817362006052600000) .
7. Remove the instrument lower panel cover RH and glove box. Refer to «INSTRUMENT LOWER COVER RH AND GLOVE BOX»(ref-233659-S02604398812006052600000) .
8. Remove the ECM. Disconnect the ECM connector. Remove the wire harness from the ECM mounting bracket. Remove the two ECM mounting bracket nuts and disconnect the ground wire.
9. Remove the blower unit. Refer to «BLOWER UNIT»(ref-233653-S32819963962006052600000) .
10. Remove the heater core cover.
11. Remove the evaporator cover.
12. Remove the evaporator. Remove the thermo control amplifier. Remove the intake sensor. CAUTION: Mark the mounting position of the intake sensor and thermo control amplifier.

Installation is in the reverse order of removal.

Expansion valve bolts: 2.9 - 5.0 N.m (0.29 - 0.51 kg-m, 26 - 44 in-lb)

Scheme 119

1. Evacuate and recover the A/C system refrigerant. Refer to «HFC-134A (R-134A) SERVICE PROCEDURE»(ref-233653-S16640295362006052600000) .
2. Remove the air cleaner to electronic throttle control actuator tube. Refer to «AIR CLEANER AND AIR DUCT»(ref-233643-S25169891552006052600000) . NOTE: The tube is located between the air cleaner assembly and the intake manifold and is removed to access the expansion valve.
3. Disconnect the A/C pipe from the expansion valve. CAUTION: Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.
4. Remove the expansion valve.

Installation is in the reverse order of removal.

Expansion valve mounting bolts: 2.9 - 5.0 N.m (0.29 - 0.51 kg-m, 26 - 44 in-lb)