Nissan Armada 2025-2026 Service and Repair Manual: Rear A/c Unit Assembly

Exploded View

REMOVAL

	Rear A/C unit assembly
	: vehicle front
	: N·m (kg-m, in-lb)

DISASSEMBLY

	Shield plate bracket		Shield plate		Sub harness
	Rear A/C unit case LH		Cooler packing		Drain hose
	Heater pipe support		Rear blower motor		Rear A/C unit case upper assembly
	Rear expansion valve		Rear evaporator pipe		Cooler grommet
	Rear evaporator		Rear heater core		Heater pipe clamp
	Rear in-vehicle sensor		Rear A/C unit case RH		O-ring
	To rear cooler pipe assembly Refer to Exploded View.
	: Clip
	: Pawl
	: Always replace after every disassembly.
	: N·m (kg-m, in-lb)
, , : Indicates that the part is connected at points with same symbol in actual vehicle.

Rear A/c Unit Assembly

Removal and Installation

REMOVAL

CAUTION:

• Perform lubricant return operation before each refrigeration system disassembly. However, if a large amount of refrigerant or lubricant leak is detected, never perform lubricant return operation. Refer to Perform Lubricant Return Operation.

• When disconnect the A/C piping related parts, cap or wrap the joint of those parts with suitable material such as vinyl tape to avoid the entry of air.

Use a refrigerant collecting equipment (for HFO-1234yf) to discharge the refrigerant. Refer to Recycle Refrigerant.

Drain engine coolant from cooling system. Refer to ENGINE COOLANT : Draining.

Disconnect rear cooler pipe assembly from rear A/C unit assembly. Refer to Removal and Installation.

Remove luggage side lower finisher RH. Refer to Removal and Installation.

Remove each duct.

• Rear inlet duct. Refer to Removal and Installation.

• Rear ventilator connecting duct. Refer to Removal and Installation.

• Rear foot duct. Refer to Removal and Installation.

Disconnect harness connectors , , , and .

: vehicle front

Disconnect rear mode door motor harness connector .

Disengage fixing clip, and then remove rear washer tube A from rear A/C unit assembly.

: Clip

Remove rear A/C unit assembly mounting bolts .

Remove rear A/C unit assembly from vehicle.

INSTALLATION

Note the following items, and then install in the reverse order of removal.

CAUTION:

• Use a refrigerant collecting equipment (for HFO-1234yf) to charge the refrigerant. Refer to Charge Refrigerant.

• Perform a check for refrigerant leakage when charging with refrigerant. Refer to Leak Test.

NOTE:

When filling radiator with engine coolant. Refer to ENGINE COOLANT : Refilling.

Rear Evaporator

Removal and Installation

REMOVAL

Remove rear A/C unit assembly. Refer to Removal and Installation.

Remove rear heater core. Refer to Removal and Installation.

Remove rear mode door motor. Refer to Removal and Installation.

Remove sub harness from rear A/C unit case RH.

Disconnect rear blower motor harness connector.

Disengage fixing clip, and then remove sub harness to secure work space.

: Clip

Disengage fixing pawls, and then remove rear A/C unit case upper assembly.

: Pawl

Remove rear A/C solenoid harness connector and rear in-vehicle sensor harness connector from rear A/C unit case LH.

Remove fixing screws , and then remove shield plate and shield plate bracket .

Remove rear A/C unit case RH fixing screws .

Disengage fixing pawls, and then remove rear A/C unit case RH from rear A/C unit case LH.

: Pawl

Remove rear A/C solenoid valve harness from rear A/C unit case LH.

Remove rear evaporator assembly from rear A/C unit case LH.

Remove rear expansion valve from rear evaporator. Refer to Removal and Installation.

INSTALLATION

Note the following items, and then install in the reverse order of removal.

CAUTION:

• The air conditioning evaporator should never be repaired or replaced with a part from another vehicle. To replace a damaged or leaking evaporator, use only a new genuine NISSAN replacement part or equivalent.

• After installing a new evaporator, adjust the compressor lubricant level. Refer to Lubricant Adjusting Procedure for Components Replacement Except A/C compressor.

• Perform a check for refrigerant leakage when charging with refrigerant. Refer to Leak Test.

NOTE:

This label indicates that the evaporator complies with SAE J2842.

Rear Evaporator Pipe

Removal and Installation

Replacement of a single part of the rear evaporator pipe is impossible. For replacement, replace rear evaporator as a set. Refer to Removal and Installation.

Rear Expansion Valve

Removal and Installation

REMOVAL

CAUTION:

When disconnect the A/C piping related parts, cap or wrap the joint of those parts with suitable material such as vinyl tape to avoid the entry of air.

Remove rear evaporator. Refer to Removal and Installation.

Remove mounting bolts , and then remove rear expansion valve and rear evaporator pipe from rear evaporator.

INSTALLATION

Note the following items, and then install in the reverse order of removal.

CAUTION:

• To prevent leakage of refrigerant, replace the O-ring with a new one. Apply a coat of compressor oil to the O-ring prior to installation.

• Perform a check for refrigerant leakage when charging with refrigerant. Refer to Leak Test.

Rear Heater Core

Removal and Installation

REMOVAL

Remove rear A/C unit assembly. Refer to Removal and Installation.

Remove cooler packing.

Remove cooler grommet.

Remove heater pipe support fixing screws .

Disengage fixing pawls, and then remove heater pipe support from rear A/C unit case LH.

: Pawl

Remove fixing screw , and then remove heater pipe clamp.

Remove rear heater core.

INSTALLATION

Note the following item, and then install in the reverse order of removal.

CAUTION:

Replace cooler packing with new one.