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Basic System (HVAC): Diagnosis Mazda 6 GJ

Automatic HVAC System 14 illustrations ~1571 words

AIR FILTER INSPECTION

  1. Verify that there is no damage, excessive dirt, or abnormal odor on the air filter. If there is any malfunction, replace the air filter. NOTE: The air filter cannot be reused by cleaning it with water or compressed air.

Scheme 62

Scheme 62: A/C UNIT REMOVAL/INSTALLATION
Scheme 62: A/C UNIT REMOVAL/INSTALLATION

Scheme 63

Scheme 63
Scheme 63
  1. Disconnect the negative battery cable.
  2. Discharge the refrigerant. (See «REFRIGERANT CHARGING»(ref-581662-S18980350532013101400000).)
  3. Drain the engine coolant. (See «ENGINE COOLANT REPLACEMENT [MZR 2.5]»(ref-581646-S28004987162013101400000) )(See «ENGINE COOLANT REPLACEMENT [MZI 3.7 V6]»(ref-581683-S26168476562013101400000) )
  4. Remove the following parts. Glove compartment (See «GLOVE COMPARTMENT REMOVAL/INSTALLATION»(ref-581614-S35474389282013101400000).) Dashboard under cover (See «DASHBOARD UNDER COVER REMOVAL/INSTALLATION»(ref-581614-S27123962102013101400000).) Front scuff plates (See «FRONT SCUFF PLATE REMOVAL/INSTALLATION»(ref-581614-S36484760642013101400000).) Front side trims (See «FRONT SIDE TRIM REMOVAL/INSTALLATION»(ref-581614-S15846352132013101400000).) Upper panel (See «UPPER PANEL REMOVAL/INSTALLATION»(ref-581614-S15065956352013101400000).) Decoration panel (See «DECORATION PANEL REMOVAL/INSTALLATION»(ref-581614-S30597239632013101400000).) Shift knob (MTX) (See «MANUAL TRANSAXLE SHIFT MECHANISM LOCATION INDEX»(ref-581615-S41865543102013101400000).) Shift panel (See «SHIFT PANEL REMOVAL/INSTALLATION»(ref-581614-S38776581642013101400000).) Center panel lower (See «CENTER PANEL LOWER REMOVAL/INSTALLATION»(ref-581614-S05740589362013101400000).) Climate control unit (See «CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER]»(ref-581663-S24664239442013101400000).) (See «CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER]»(ref-581664-S10963812152013101400000).) Rear console (See «REAR CONSOLE REMOVAL/INSTALLATION»(ref-581614-S12913222402013101400000).) Hood release lever (See «HOOD LATCH AND RELEASE LEVER REMOVAL/INSTALLATION»(ref-581656-S24929307862013101400000).) Lower panel (See «LOWER PANEL REMOVAL/INSTALLATION»(ref-581614-S08723493922013101400000).) Driver-side air bag module (See «DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION»(ref-581610-S10735079002013101400000).) Steering wheel (See «STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION [WITHOUT ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]»(ref-581622-S34424186902013101400000).)(See «STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]»(ref-581622-S06798620582013101400000).) Column cover (See «COLUMN COVER REMOVAL/INSTALLATION»(ref-581614-S36009183262013101400000).) Combination switch (See «COMBINATION SWITCH REMOVAL/INSTALLATION»(ref-581620-S26915536712013101400000).) Meter hood (See «METER HOOD REMOVAL/INSTALLATION»(ref-581614-S19165313082013101400000).) Instrument cluster (See «INSTRUMENT CLUSTER REMOVAL/INSTALLATION»(ref-581651-S30763301102013101400000).) Center panel upper (See «CENTER PANEL UPPER REMOVAL/INSTALLATION»(ref-581614-S25330971132013101400000).) Audio unit (See «AUDIO UNIT REMOVAL/INSTALLATION»(ref-581616-S32219205692013101400000).) Steering shaft cover (See «STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION [WITHOUT ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]»(ref-581622-S34424186902013101400000).)(See «STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]»(ref-581622-S06798620582013101400000).) Steering shaft (See «STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION [WITHOUT ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]»(ref-581622-S34424186902013101400000).)(See «STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]»(ref-581622-S06798620582013101400000).) Side panel (See «SIDE PANEL REMOVAL/INSTALLATION»(ref-581614-S07883015262013101400000).) SIRIUS satellite radio unit (See «SIRIUS SATELLITE RADIO UNIT REMOVAL/INSTALLATION»(ref-581616-S38070671012013101400000).) Passenger-side air bag module (See «PASSENGER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION»(ref-581610-S16434598032013101400000).) aa. A-pillar trims (See «A-PILLAR TRIM REMOVAL/INSTALLATION»(ref-581614-S20559757112013101400000).) ab. Dashboard (See «DASHBOARD REMOVAL/INSTALLATION»(ref-581614-S23273769092013101400000).) CAUTION: If moisture or foreign material enters the refrigeration cycle, cooling ability will be lowered and abnormal noise or other malfunction could occur. Always plug open fittings immediately after removing any refrigeration cycle parts.
  5. Disconnect from A/C unit in the order indicated in the table. Do not allow compressor oil to spill. (Scheme 62): A/C Unit Related Components With Torque Specification
  6. Remove the A/C unit. Do not allow compressor oil. (Scheme 63): A/C Unit And Nuts With Torque Specification
  7. Install in the reverse order of removal.
  8. Perform the refrigerant system performance test. (See «REFRIGERANT SYSTEM PERFORMANCE TEST»(ref-581662-S05846877252013101400000).)
  9. Inspect for engine coolant leakage. (See «ENGINE COOLANT LEAKAGE INSPECTION [MZR 2.5]»(ref-581646-S26582918502013101400000).) (See «ENGINE COOLANT LEAKAGE INSPECTION [MZI 3.7 V6]»(ref-581683-S19761424272013101400000).)

EVAPORATOR INSPECTION

  1. Inspect the evaporator for damage, cracks, and oil leakage. If there is any malfunction, replace the evaporator.
  2. Visually inspect the fins for bending. If there is any bending, use the end of a flathead screwdriver to straighten the fins.

HEATER CORE INSPECTION

  1. Inspect the heater core for damage, cracks, and water leakage. If there is any malfunction, replace the heater core.
  2. Visually inspect the fins for bending. If there is any bending, use the end of a flathead screwdriver to straighten the fins.
  3. Visually inspect the heater hose for deformation. Repair with pliers if there is deformation. If there is any malfunction, replace the heater core.

Scheme 64

Scheme 64: REAR HEAT DUCT COMPONENT REMOVAL/INSTALLATION
Scheme 64: REAR HEAT DUCT COMPONENT REMOVAL/INSTALLATION
  1. Disconnect the negative battery cable.
  2. Remove the following parts: Front seats (See «FRONT SEAT REMOVAL/INSTALLATION»(ref-581617-S37007315702013101400000).) Front scuff plates (See «FRONT SCUFF PLATE REMOVAL/INSTALLATION»(ref-581614-S36484760642013101400000).) Front side trims (See «FRONT SIDE TRIM REMOVAL/INSTALLATION»(ref-581614-S15846352132013101400000).) Steering shaft cover (See «STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION [WITHOUT ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]»(ref-581622-S34424186902013101400000).)(See «STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]»(ref-581622-S06798620582013101400000).) Upper panel (See «UPPER PANEL REMOVAL/INSTALLATION»(ref-581614-S15065956352013101400000).) Decoration panel (See «DECORATION PANEL REMOVAL/INSTALLATION»(ref-581614-S30597239632013101400000).) Shift knob (MTX) (See «MANUAL TRANSAXLE SHIFT MECHANISM LOCATION INDEX»(ref-581615-S41865543102013101400000).) Shift panel (See «SHIFT PANEL REMOVAL/INSTALLATION»(ref-581614-S38776581642013101400000).) Center panel lower (See «CENTER PANEL LOWER REMOVAL/INSTALLATION»(ref-581614-S05740589362013101400000).) Rear console (See «REAR CONSOLE REMOVAL/INSTALLATION»(ref-581614-S12913222402013101400000).) Fuel-filler lid opener bezel (See «FUEL-FILLER LID OPENER BEZEL REMOVAL/INSTALLATION»(ref-581614-S33838077642013101400000).)
  3. Turn the floor covering over. (See «FLOOR COVERING REMOVAL/INSTALLATION»(ref-581614-S30142372052013101400000).)
  4. Remove in the order indicated in the table. (Scheme 64): RH/LH Rear Heat Duct And Fastener
  5. Install in the reverse order of removal.

Scheme 65

Scheme 65: A/C COMPRESSOR REMOVAL/INSTALLATION
Scheme 65: A/C COMPRESSOR REMOVAL/INSTALLATION

Scheme 66

Scheme 66
Scheme 66
  1. Disconnect the negative battery cable.
  2. Discharge the refrigerant. (See «REFRIGERANT CHARGING»(ref-581662-S18980350532013101400000).)
  3. Remove the front under cover.
  4. Remove the drive belt. (See «DRIVE BELT INSPECTION [MZR 2.5]»(ref-581643-S32428047472013101400000).) (See «DRIVE BELT INSPECTION [MZI 3.7 V6]»(ref-581682-S20194397402013101400000).)
  5. Remove the water hose bracket. (Scheme 65): Water Hose Bracket And Bolt CAUTION: If moisture or foreign material enters the refrigeration cycle, cooling ability will be lowered and abnormal noise or other malfunction could occur. Always plug open fittings immediately after removing any refrigeration cycle parts.
  6. Remove in the order indicated in the table. Do not allow compressor oil to spill. (Scheme 66): A/C Compressor Components With Torque Specification
  7. Install in the reverse order of removal.
  8. Perform the refrigerant system performance test. (See «REFRIGERANT SYSTEM PERFORMANCE TEST»(ref-581662-S05846877252013101400000).)

CONDENSER INSPECTION

  1. Inspect the condenser for cracks, damage, and oil leakage. If there is any malfunction, replace the condenser.
  2. Visually inspect the fins for clogging of foreign material. If any fins are clogged, remove the foreign material.
  3. Visually inspect the fins for bending. If there is any bending, use the end of a flathead screwdriver to straighten fins.

Scheme 67

Scheme 67: RECEIVER/DRIER REMOVAL/INSTALLATION
Scheme 67: RECEIVER/DRIER REMOVAL/INSTALLATION
  1. Disconnect the negative battery cable.
  2. Drain the refrigerant. (See «REFRIGERANT CHARGING»(ref-581662-S18980350532013101400000).)
  3. Remove the front bumper. (See «FRONT BUMPER REMOVAL/INSTALLATION»(ref-581621-S34011796882013101400000).) CAUTION: If moisture or foreign material enters the refrigeration cycle, cooling ability will be lowered and abnormal noise will occur. Always immediately plug all open fittings after removing any refrigeration cycle parts to keep moisture or foreign material out of the cycle.
  4. Remove in the order indicated in the table. Do not allow compressor oil to spill. (Scheme 67): Receiver/Drier And Bolt With Torque Specification
  5. Install in the reverse order of removal.
  6. Perform the refrigerant system performance test. (See «REFRIGERANT SYSTEM PERFORMANCE TEST»(ref-581662-S05846877252013101400000).)

Scheme 68

Scheme 68: Receiver/Drier Removal Note
Scheme 68: Receiver/Drier Removal Note
  1. Disconnect the block joint type pipes by grasping female side of the block with hand holding firmly, then loosen the connection bolt. (Scheme 68): Removing Receiver/Drier Connection Bolt

Scheme 69

Scheme 69: Receiver/Drier Installation Note
Scheme 69: Receiver/Drier Installation Note
  1. Tighten the bolt of joint by hand. (Scheme 69): Installing Receiver/Drier Connection Bolt
  2. Tighten the joint to the specified torque. Connect the block joint type pipe by grasping female side of the block with hand holding firmly, then tighten the connection bolt.

Scheme 70

Scheme 70: MZR 2.5
Scheme 70: MZR 2.5

Scheme 71

Scheme 71
Scheme 71
  1. Disconnect the negative battery cable.
  2. Remove the engine coolant tank. ((See «ENGINE COOLANT LEAKAGE INSPECTION [MZR 2.5]»(ref-581646-S26582918502013101400000).) (See «ENGINE COOLANT LEAKAGE INSPECTION [MZI 3.7 V6]»(ref-581683-S19761424272013101400000).)
  3. Discharge the refrigerant. (See «REFRIGERANT CHARGING»(ref-581662-S18980350532013101400000).)
  4. Disconnect the refrigerant pressure sensor connector.
  5. Remove the No.3 engine mount earth. (Scheme 70): Refrigerant Line And Bolt
  6. Do not allow remaining compressor oil in the piping and connecting parts to spill, and remove in the order indicated in the table. CAUTION: If moisture or foreign material enters the refrigeration cycle, cooling ability will be lowered and abnormal noise or other malfunction could occur. Always plug open fittings immediately after removing any refrigeration cycle parts.
  7. Install in the reverse order of removal.
  8. Perform the refrigerant system performance test. (See «REFRIGERANT SYSTEM PERFORMANCE TEST»(ref-581662-S05846877252013101400000).) (Scheme 71): Refrigerant Line Related Components With Torque Specification

Scheme 72

Scheme 72: MZI 3.7 V6
Scheme 72: MZI 3.7 V6

Scheme 73

Scheme 73
Scheme 73

Scheme 74

Scheme 74
Scheme 74
  1. Remove the battery and battery tray. (See «BATTERY REMOVAL/INSTALLATION [MZI 3.7 V6]»(ref-581639-S29135432412013101400000).)
  2. Remove the engine cover (See «ENGINE COVER REMOVAL/INSTALLATION [MZI 3.7 V6]»(ref-581682-S04142926752013101400000).)
  3. Remove the coolant reserve tank. (See «COOLANT RESERVE TANK REMOVAL/INSTALLATION [MZI 3.7 V6]»(ref-581683-S13045309552013101400000).)
  4. Discharge the refrigerant. (See «REFRIGERANT CHARGING»(ref-581662-S18980350532013101400000).)
  5. Disconnect the refrigerant pressure sensor connector.
  6. Remove the No.3 engine mount ground. (Scheme 72): Refrigerant Line And Bolt
  7. Remove the following parts. Windshield wiper arm and blade (See «WINDSHIELD WIPER ARM AND BLADE REMOVAL/INSTALLATION»(ref-581618-S04530744522013101400000).) Cowl grille (See «COWL GRILLE REMOVAL/INSTALLATION»(ref-581657-S30702990112013101400000).) Windshield wiper motor (See «WINDSHIELD WIPER MOTOR REMOVAL/INSTALLATION»(ref-581618-S05610234842013101400000).) Cowl panel (See «COWL PANEL REMOVAL/INSTALLATION»(ref-581621-S42468753042013101400000).) DSC HU/CM (with DSC) (See «DSC HU/CM REMOVAL/INSTALLATION»(ref-581627-S26802314152013101400000).) Front pipe (See «EXHAUST SYSTEM REMOVAL/INSTALLATION [MZI 3.7 V6]»(ref-581685-S29941466862013101400000).) Air cleaner component (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZI 3.7 V6]»(ref-581679-S24618371532013101400000).) Aerodynamic under cover No.1 and No.2. (See «AERODYNAMIC UNDER COVER NO.1 REMOVAL/INSTALLATION»(ref-581657-S31409051752013101400000).) (See «AERODYNAMIC UNDER COVER NO.2 REMOVAL/INSTALLATION»(ref-581657-S19487724012013101400000).)
  8. Disconnect the engine mount No.1. (See «ENGINE REMOVAL/INSTALLATION [MZI 3.7 V6]»(ref-581682-S09006967352013101400000).)
  9. Sustain the engine and transaxle component with the engine jack. (Scheme 73): Supporting Engine And Transaxle Component With Engine Jack
  10. Disconnect the engine mount No.3 and No.4. (See «ENGINE REMOVAL/INSTALLATION [MZI 3.7 V6]»(ref-581682-S09006967352013101400000).)
  11. Move the engine and transaxle component slightly direction to left, and enlarge the space for remove the refrigerant line.
  12. Do not allow remaining compressor oil in the piping and connecting parts to spill, and remove in the order indicated in the table. CAUTION: If moisture or foreign material enters the refrigeration cycle, cooling ability will be lowered and abnormal noise or other malfunction could occur. Always plug open fittings immediately after removing any refrigeration cycle parts.
  13. Install in the reverse order of removal.
  14. Perform the refrigerant system performance test. (See «REFRIGERANT SYSTEM PERFORMANCE TEST»(ref-581662-S05846877252013101400000).) (Scheme 74): Refrigerant Line Components With Torque Specifications

Scheme 75

Scheme 75: Block joint type
Scheme 75: Block joint type
  1. Disconnect the block joint type pipes by grasping the female side of the block with pliers or similar tool and holding firmly, and then remove the connection bolt. (Scheme 75): Removing Refrigerant Line Connection Bolt

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