Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA1999626 ES, 2.5 D, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 144 (HVAC SYSTEM)
1999 Mazda 626 ES, 2.5 D, Standard
Section 144 (HVAC System)
1999 Mazda 626 ES, 2.5 D, StandardSECTION Section 144 (HVAC System)
WARNING: This page is about a different car, the 2004 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
- On-Board Diagnostic
- Diagnostic Trouble Code Number Inspection
- DTC 02: Solar Radiation Sensor System Inspection
- DTC 03: Solar Radiation Sensor System Inspection
- DTC 06: Passenger Compartment Temperature Sensor System Inspection
- DTC 07: Passenger Compartment Temperature Sensor System Inspection
- DTC 10: Evaporator Compartment Temperature Sensor System Inspection
- DTC 11: Evaporator Temperature Sensor System Inspection
- DTC 12: Ambient Temperature Sensor System Inspection
- DTC 13: Ambient Temperature Sensor System Inspection
- DTC 14: Water Temperature Sensor System Inspection
- DTC 15: Water Temperature Sensor System Inspection
- DTC 21: Airflow Mode Actuator (Potentiometer) System Inspection
- DTC 22: Airflow Mode Actuator (Potentiometer) System Inspection
- DTC 59: Airflow Mode Actuator (Motor Lock) System Inspection
- DTC 06, 10, 12, 14, 21: Climate Control Unit (+5V Power Supply Or Sensor Ground System) Or Sensor Ground System Inspection
- DTC 07, 11, 13, 15, 22: Climate Control Unit (+5V Power Supply Or Sensor Ground System) Or Sensor Ground System Inspection
- Symptom Troubleshooting
- Foreword
- Troubleshooting Index
- No. 1 Insufficient Air (Or No Air) Blown From Vents
- No. 2 Amount Of Air Blown From Vents Does Not Change
- No. 3 Amount Of Air Blown From Vents Does Not Change
- No. 4 Air Intake Mode Does Not Change
- No. 5 No Temperature Control With Climate Control Unit
- No. 6 Windshield Fogged
- No. 7 Air From Vents Cold Enough
- No. 8 No Cool Air
- No. 9 Noise While Operating A/C System
- Refrigerant System
- Basic System
- Basic System Location Index
- A/C Unit Removal/Installation
- A/C Unit Disassembly/Assembly
- Air Filter Removal/Installation
- Air Filter Inspection
- Evaporator Inspection
- Heater Core Inspection
- Rear Heat Duct Removal/Installation
- A/C Compressor Removal/Installation
- Condenser Removal/Installation
- Condenser Inspection
- Refrigerant Lines Removal/Installation
- Control System
- Control System Location Index
- Air Intake Actuator Removal/Installation
- Air Intake Actuator Inspection
- Air Mix Actuator Removal/Installation
- Air Mix Actuator Inspection
- Airflow Mode Actuator Removal/Installation
- Airflow Mode Actuator Inspection
- Blower Motor Removal/Installation
- Blower Motor Inspection
- Resistor Removal/Installation
- Resistor Inspection
- PWM Unit Inspection
- Magnetic Clutch Disassembly/Assembly
- Magnetic Clutch Adjustment
- Magnetic Clutch Inspection
- Solar Radiation Sensor Removal/Installation
- Solar Radiation Sensor Inspection
- Ambient Temperature Sensor Removal/Installation
- Ambient Temperature Sensor Inspection
- Passenger Compartment Temperature Sensor Removal/Installation
- Passenger Compartment Temperature Sensor Inspection
- Evaporator Temperature Sensor Removal/Installation
- Evaporator Temperature Sensor Inspection
- Water Temperature Sensor Removal/Installation
- Water Temperature Sensor Inspection
- Refrigerant Pressure Switch Removal/Installation
- Refrigerant Pressure Switch Inspection
- Climate Control Unit Removal
- Climate Control Unit Installation
- Climate Control Unit Disassembly/Assembly
- Climate Control Unit Wire Adjustment
- Climate Control Unit Inspection
- Specifications
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.