Home ReviewsRefund
Home/Nissan/Pathfinder/Nissan Pathfinder III рестайлинг (2010-2014)/Repair manual/Automatic HVAC System/Ventilation System: Other
Contents Section: Automatic HVAC System All sections

Ventilation System: Other Nissan Pathfinder III рестайлинг

Automatic HVAC System 13 illustrations ~1883 words

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.

Information necessary to service the system safely is included in the SRS AIRBAG and SEAT BELTS articles of this Service Information.

WARNINGTo avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer. Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the SRS AIRBAG . Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Information. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNINGWhen working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing serious injury. When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service.

Precaution Necessary for Steering Wheel Rotation After Battery Disconnect

Note. This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYSTEM). Remove and install all control units after disconnecting both battery cables with the ignition knob in the "LOCK" position. Always use CONSULT to perform self-diagnosis as a part of each function inspection after finishing work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.

For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mechanism is adopted on the key cylinder.

For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and steering wheel rotation will become impossible.

If steering wheel rotation is required when battery power is interrupted, follow the procedure below before starting the repair operation.

Precaution for Working with HFC-134a (R-134a)

WARNINGCFC-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 " CONTAMINATED REFRIGERANT ". To determine the purity of HFC-134a (R-134a) in the vehicle and recovery tank, use refrigerant recovery/recycling equipment 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 requirements of SAE J2210 [HFC-134a (R-134a) recycling equipment], or SAE 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 the refrigerant oil to come in contact with styrofoam parts. Damage may result.

Precaution for Work

  1. When removing or disassembling each component, be careful not to damage or deform it. If a component may be subject to interference, be sure to protect it with a shop cloth.
  2. When removing (disengaging) components with a screwdriver or similar tool, be sure to wrap the component with a shop cloth or vinyl tape to protect it.
  3. Protect the removed parts with a shop cloth and prevent them from being dropped.
  4. Replace a deformed or damaged clip.
  5. If a part is specified as a non-reusable part, always replace it with new one.
  6. Be sure to tighten bolts and nuts securely to the specified torque.
  7. After installation is complete, be sure to check that each part works properly.
  8. Follow the steps below to clean components.
  1. Water soluble dirt: Dip a soft cloth into lukewarm water, and wring the water out of the cloth to wipe the dirty area. Then rub with a soft and dry cloth.
  2. Oily dirt: Dip a soft cloth into lukewarm water with mild detergent (concentration: within 2 to 3%), and wipe the dirty area. Then dip a cloth into fresh water, and wring the water out of the cloth to wipe the detergent off. Then rub with a soft and dry cloth.
  1. Do not use organic solvent such as thinner, benzene, alcohol, or gasoline.
  2. For genuine leather seats, use a genuine leather seat cleaner.

Special Service Tool

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number (Kent-Moore No.) Tool name Description - (J-46534) Trim tool set Removing trim components

Scheme 220

Scheme 220: Special Service Tool
Scheme 220: Special Service Tool

Commercial Service Tool

Tool name Description Power tool Loosening bolts, nuts and screws

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 compartment to recirculate into the passenger compartment, so the rear heater and cooling unit assembly is not equipped with in-cabin microfilters.

Scheme 221

Scheme 221: FUNCTION
Scheme 221: FUNCTION

FRONT AIR CONTROL (MANUAL A/C)

Removal

Scheme 222

Scheme 222: FRONT AIR CONTROL (MANUAL A/C)
Scheme 222: FRONT AIR CONTROL (MANUAL A/C)
  1. Remove the AT finisher. Refer to " «REMOVAL AND INSTALLATION»(ref-519812-S07978010502012122900000) "
  2. Remove the cup holder.
  3. Remove cluster lid C. Refer to " «REMOVAL AND INSTALLATION»(ref-519812-S20460961332012122900000) ".
  4. Remove the four screws securing the front air control to cluster lid C.
  5. Remove the front air control.

Installation

Installation is in the reverse order of removal.

A/C AUTO AMP. (AUTOMATIC A/C)

Removal

Remove the display unit. Refer to " REMOVAL AND INSTALLATION " (MID AUDIO), " REMOVAL AND INSTALLATION " (BOSE AUDIO WITHOUT NAVIGATION) or " REMOVAL AND INSTALLATION " (BOSE AUDIO WITH NAVIGATION).

Installation

Installation is in the reverse order of removal.

REAR AIR CONTROL (FRONT)

Removal

Scheme 223

Scheme 223: REAR AIR CONTROL (FRONT)
Scheme 223: REAR AIR CONTROL (FRONT)
  1. Remove the front roof console finisher from the front roof console. Refer to " «REMOVAL AND INSTALLATION»(ref-519822-S39057959832012122900000) ".
  2. Remove the 4 rear air control (front) screws (A), disconnect the rear air control (front) connector and remove the rear air control (front) (1) from the front roof console.

Installation

Installation is in the reverse order of removal.

REAR AIR CONTROL (REAR)

Removal

Scheme 224

Scheme 224: REAR AIR CONTROL (REAR)
Scheme 224: REAR AIR CONTROL (REAR)
  1. Remove the rear finisher assembly from the center console. Refer to " «UNIT DISASSEMBLY AND ASSEMBLY»(ref-519812-S27504354462012122900000) ".
  2. Remove the four rear air control (rear) screws (A) and the rear air control (rear) (1) from the rear finisher assembly.

Installation

Installation is in the reverse order of removal.

Scheme 225

Scheme 225: REMOVAL
Scheme 225: REMOVAL
  1. Remove the cluster lid D. Refer to " «REMOVAL AND INSTALLATION»(ref-519812-S18994487942012122900000) ".
  2. Disconnect the in-vehicle sensor electrical connector.
  3. Remove the two screws and the in-vehicle sensor.

FRONT BLOWER MOTOR

Removal

  1. Remove the instrument lower panel RH and lower glove box assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-519812-S21602947582012122900000) ".
  2. Disconnect the front blower motor electrical connector.
  3. Remove the three screws and the front blower motor.
  4. Remove the blower motor wheel.

Installation

Installation is in the reverse order of removal.

REAR BLOWER MOTOR

Removal

  1. Remove the rear heater and cooling unit assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-519826-S21149655882012122900000) ".
  2. Disconnect the rear blower motor electrical connector.
  3. Remove the three screws and the rear blower motor.
  4. Remove the blower motor wheel.

Installation

Installation is in the reverse order of removal.

Scheme 226

Scheme 226: Component
Scheme 226: Component

Scheme 227

Scheme 227
Scheme 227

FRONT VARIABLE BLOWER CONTROL

Removal

  1. Disconnect the variable blower control (front) electrical connector.
  2. Remove the 2 screws and the variable blower control (front).

Installation

Installation is in the reverse order of removal.

REAR VARIABLE BLOWER CONTROL

Removal

  1. Remove the rear heater and cooling unit assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-519826-S21149655882012122900000) ".
  2. Disconnect the variable blower control (rear) electrical connector.
  3. Remove the 2 screws and the variable blower control (rear).

Installation

Installation is in the reverse order of removal.

Scheme 228

Scheme 228: Removal and Installation
Scheme 228: Removal and Installation

FRONT HEATER CORE

Removal

  1. Remove the front heater and cooling unit assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-519826-S21149655882012122900000) ".
  2. Remove the screws and the front heater core cover.
  3. Remove the front heater core and evaporator pipe bracket.
  4. Remove the front heater core. NOTE: If the in-cabin microfilters are contaminated from coolant leaking from the front heater core, replace the in-cabin microfilters with new ones before installing the new front heater core.

Installation

Installation is in the reverse order of removal.

REAR HEATER CORE

Removal

  1. Partially drain the engine cooling system. Refer to " «CHANGING ENGINE COOLANT»(ref-519776-S40250594332012122900000) " (VQ40DE), " «CHANGING ENGINE COOLANT»(ref-519791-S03863245732012122900000) " (VK56DE).
  2. Remove the rear heater and cooling unit assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-519826-S21149655882012122900000) ".
  3. Remove the rear heater core bracket.
  4. Remove the heater core.

Installation

Installation is in the reverse order of removal.

Scheme 229

Scheme 229: Removal and Installation
Scheme 229: Removal and Installation

FRONT AIR MIX DOOR MOTOR - DRIVER - ATC

Removal

  1. Remove the lower dash side finisher. Refer to " «REMOVAL AND INSTALLATION»(ref-519822-S25536005202012122900000) ".
  2. Remove the instrument lower panel RH and lower glove box. Refer to " «REMOVAL AND INSTALLATION»(ref-519812-S21602947582012122900000) ".
  3. Disconnect the air mix door motor harness connector.
  4. Remove the three screws and the air mix door motor.

Installation

Installation is in the reverse order of removal.

FRONT AIR MIX DOOR MOTOR - PASSENGER - ATC

Removal

  1. Remove the front heater and cooling unit assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-519826-S21149655882012122900000) ".
  2. Remove the steering member from the front heater and cooling unit assembly.
  3. Disconnect the air mix door motor electrical connector.
  4. Remove the three screws and the air mix door motor.

Installation

Installation is in the reverse order of removal.

FRONT AIR MIX DOOR MOTOR - MTC

Removal

  1. Remove the front heater and cooling unit assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-519826-S21149655882012122900000) ".
  2. Remove the steering member from the front heater and cooling unit assembly.
  3. Disconnect the air mix door motor electrical connector.
  4. Remove the three screws and the air mix door motor.

Installation

Installation is in the reverse order of removal.

REAR AIR MIX DOOR MOTOR

Removal

  1. Remove the luggage side lower and upper finisher RH. Refer to " «COMPONENT»(ref-519822-S07868667692012122900000) ".
  2. Disconnect the rear air mix door motor electrical connector.
  3. Remove the three screws and the rear air mix door motor.

Installation

Installation is in the reverse order of removal.

Scheme 230

Scheme 230: Component
Scheme 230: Component

Scheme 231

Scheme 231
Scheme 231

Scheme 232

Scheme 232
Scheme 232

DEFROSTER NOZZLE

Removal

  1. Remove the front heater and cooling unit assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-519826-S21149655882012122900000) ".
  2. Remove the defroster nozzle.

Installation

Installation is in the reverse order of removal.

RH AND LH SIDE DEMISTER DUCT

Removal

  1. Remove the front heater and cooling unit assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-519826-S21149655882012122900000) ".
  2. Remove the RH or LH side demister duct.

Installation

Installation is in the reverse order of removal.

RH AND LH VENTILATOR DUCT

Removal

  1. Remove the front heater and cooling unit assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-519826-S21149655882012122900000) ".
  2. Remove the RH or LH ventilator duct.

Installation

Installation is in the reverse order of removal.

CENTER VENTILATOR DUCT

Removal

  1. Remove the front heater and cooling unit assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-519826-S21149655882012122900000) ".
  2. Remove the defroster nozzle.
  3. Remove the RH and LH ventilator ducts.
  4. Remove the RH and LH side demister ducts.
  5. Remove the center ventilator duct.

Installation

Installation is in the reverse order of removal.

FLOOR CONNECTOR DUCT

Removal

  1. Remove the front heater and cooling unit assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-519826-S21149655882012122900000) ".
  2. Remove the floor connector duct.

Installation

Installation is in the reverse order of removal.

FRONT AND REAR FLOOR DUCTS

Removal

  1. Remove the center console. Refer to " «REMOVAL AND INSTALLATION»(ref-519812-S11228058962012122900000) ".
  2. Remove the floor carpet. Refer to " «REMOVAL AND INSTALLATION»(ref-519822-S03126701562012122900000) ".
  3. Remove the clips and remove the front and rear floor ducts.

Installation

Installation is in the reverse order of removal.

REAR OVERHEAD DUCTS

Removal

  1. Remove the luggage side lower finisher RH. Refer to " «COMPONENT»(ref-519822-S07868667692012122900000) ".
  2. Remove the headliner. Refer to " «REMOVAL AND INSTALLATION»(ref-519822-S39057959832012122900000) ". NOTE: The rear headliner duct (connected to the rear upper overhead duct) is part of the headliner and is replaced as an assembly.
  3. Remove the clips and remove the rear upper and lower overhead ducts.

Installation

Installation is in the reverse order of removal.

SIDE REAR FLOOR DUCT

Removal

  1. Remove the luggage side lower finisher RH. Refer to " «COMPONENT»(ref-519822-S07868667692012122900000) ".
  2. Reposition the floor carpet out of the way.
  3. Remove the clips and remove the side rear floor duct.

Installation

Installation is in the reverse order of removal.

GRILLES

Removal

  1. Remove the necessary interior trim panel(s) to access the grille. Refer to " «COMPONENT»(ref-519822-S33347488132012122900000) ". NOTE: The overhead grilles are part of the headliner. To replace the overhead grilles the headliner must be replaced. Refer to " «REMOVAL AND INSTALLATION»(ref-519826-S28726314902012122900000) ".
  2. Remove the grille from the interior trim panel.

Installation

Installation is in the reverse order of removal.

More articles — Ventilation System