Basic System (HVAC): Diagnosis Mazda 6 GH

AIR FILTER INSPECTION

1. Inspect for damage, excessive dirt, or foul smell. If the air filter Is damaged, excessively dirty, or foul smelling, replace it. NOTE: The air filter cannot be reused by cleaning it with water or compressed air.

EVAPORATOR INSPECTION

1. Remove the evaporator from the A/C unit.
2. Inspect for cracks, damage, and oil leakage. If any problems are found, replace the evaporator.
3. Inspect for bent fins. If any are bent, use a flathead screwdriver to straighten them.

HEATER CORE INSPECTION

1. Remove the heater core from the A/C unit.
2. Inspect for cracks, damage, and coolant leakage. If any problems are found, replace the heater core.
3. Inspect for bent fins. If any are bent, use a flathead screwdriver to straighten them.
4. Verify that the heater core inlet and outlet pipes are not distorted or damaged. Repair with pliers if necessary.

Scheme 5

1. Turn over the floor covering. (See «FLOOR COVERING REMOVAL/INSTALLATION.»(ref-288737-S16494505262008062500000) )
2. Remove in the order indicated in the table.
3. Install in the reverse order of removal.

Scheme 6

1. Disconnect the negative battery cable.
2. Discharge the refrigerant from the system. (See «REFRIGERANT CHARGING [L3, AJ].»(ref-288813-S39589263272008062500000) )
3. Remove the right side splash shield and mudguard.
4. Remove the WU-TWC. (AJ only) See «EXHAUST SYSTEM REMOVAL/INSTALLATION [AJ]»(ref-288789-S14623219872008062500000)
5. Loosen the drive belt and remove it. CAUTION: If moisture or foreign material enters the refrigeration cycle, cooling ability will be lowered and abnormal noise will occur. Always immediately plug open fittings after removing any refrigeration cycle parts to keep moisture or foreign material out of the cycle.
6. Remove in the order indicated in the table. Do not allow compressor oil to spill.
7. Install in the reverse order of removal.
8. Adjust the drive belt.
9. Perform the refrigerant system performance test. (See «REFRIGERANT SYSTEM PERFORMANCE TEST [L3, AJ].»(ref-288813-S22819469112008062500000) )

CONDENSER INSPECTION

1. Inspect for cracks, damage, and oil leakage. If any are found, replace the condenser.
2. Inspect for fins clogged by dust. If any are clogged, remove the dust from the fins.
3. Inspect for bent fins. If any are bent, use a flathead screwdriver to straighten them.

Scheme 7

1. Remove the battery.
2. Discharge the refrigerant from the system. (See «REFRIGERANT CHARGING [L3, AJ].»(ref-288813-S39589263272008062500000) )
3. Remove the reservoir. (AJ)
4. Remove the washer tank. (AJ) (See «WASHER TANK REMOVAL/INSTALLATION [SPORT SEDAN].»(ref-288796-S23354336462008062500000) ) (See «WASHER TANK REMOVAL/INSTALLATION [5-DOOR, SPORT WAGON].»(ref-288796-S07940198742008062500000) )
5. Remove the under cover. 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.
6. Remove in the order indicated in the table. Do not allow compressor oil to spill.
7. Install in the reverse order of removal.
8. Perform the refrigerant system performance test. (See «REFRIGERANT SYSTEM PERFORMANCE TEST [L3, AJ].»(ref-288813-S22819469112008062500000) )

Scheme 8

1. Disconnect the block joint type pipes by grasping female side of the block with pliers or similar tool and holding firmly, then remove the connection bolt or nut.

Scheme 9

1. Tighten the bolt of joint by hand.
2. Tighten the joint to the specified torque.
3. Connect the block joint type pipes by grasping the female side of the block with pliers or similar tool and holding firmly, then tighten the connection bolt with a torque wrench.