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 MANUALSVOLKSWAGEN2001CABRIO GLX (1V7) L4-2.0L (ABA)REPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSCHECKING A/C SYSTEMCHECKING A/C SYSTEM COOLING PERFORMANCE
2001 Volkswagen Cabrio GLX (1V7) L4-2.0L (ABA)
Checking A/C System Cooling Performance
2001 Volkswagen Cabrio GLX (1V7) L4-2.0L (ABA)SECTION Checking A/C System Cooling Performance
NOTE: A/C evaporator temperature switch -E33- (if equipped) switches A/C compressor OFF only in special instances so evaporator does not ice up, variable displacement A/C compressor maintains temperature of 0 °C (32 °F) in evaporator.
Test Conditions:
- Condenser and radiator are clean and free of obstructions
- Air distribution can be adjusted properly with ventilation control knobs
- No wiring problems detected using wiring diagram
- Outside (ambient) temperature is 20 °C-30 °C (68 °F-86 °F)
Checking:
- Start engine.
- Set fresh air blower to second speed (position 2).
- Set temperature control knob to full "cold" position (against stop).
- Adjust air distribution so air flows from instrument panel vents.
- Switch A/C on by pressing "A/C" button.
- Insert thermometer into center instrument panel outlet.
- Raise engine speed to 2000 RPM.
Specified Result:
With normal humidity and outside (ambient) temperature between 20 °-25 °C (68 °-77 °F), system is Sufficiently charged if air temperature from center instrument panel vent drops below 10 °C (50 °F) within one minute.
For higher ambient temperatures and/or higher humidity, specified air temperature from center instrument panel vent can be slightly higher.
Test Conditions:
- Condenser and radiator are clean and free of obstructions
- Air distribution can be adjusted properly with ventilation control knobs
- No wiring problems detected using wiring diagram
- Outside (ambient) temperature is 20 °C-30 °C (68 °F-86 °F)
Checking:
- Start engine.
- Set fresh air blower to second speed (position 2).
- Set temperature control knob to full "cold" position (against stop).
- Adjust air distribution so air flows from instrument panel vents.
- Switch A/C on by pressing "A/C" button.
- Insert thermometer into center instrument panel outlet.
- Raise engine speed to 2000 RPM.
Specified Result:
With normal humidity and outside (ambient) temperature between 20 °-25 °C (68 °-77 °F), system is Sufficiently charged if air temperature from center instrument panel vent drops below 10 °C (50 °F) within one minute.
For higher ambient temperatures and/or higher humidity, specified air temperature from center instrument panel vent can be slightly higher.
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:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.