Why is my air conditioner not working on my Jetta?

Why is my air conditioner not working on my Jetta?

You can use power washer for cleaning, but make sure that its at low pressure setting, as high pressure can easily damage the delicate fins on the condenser. A clogged or leaking condenser can also be the reason for air-conditioning not working properly on your Jetta.

What is the relay code for a VW Jetta?

Relay code number 100 is replaced by relay code number 370 depending on production. N… – Ignition coils 1-4 with output stage (up to May 2005) N… – Ignition coils 1-4 with output stage (up to May 2005) N… – Injectors cylinders 1-4 (up to May 2005) N… – Injectors (up to May 2005)

What are the injectors on a VW Jetta?

– Injectors (up to May 2005) WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

Where is the fuse box located on a Volkswagen Jetta?

Year of production: 2003, 2004, 2005, 2006, 2007, 2008, 2009 Engine compartment fuse box Relay carrier on onboard supply control unit (left under dash panel) The instrument panel fuse panel Additional relay carrier, under box in engine compartment

Potential causes include malfunctioning A/C switch, air conditioner high pressure sensor, defective fan control module, ground, power and/or throttle basic settings. Customer Concern: The A/C is not working.

What kind of climate control does a Jetta use?

Manual climate control. Vehicle Applications: 2000 Volkswagen Beetle 2.0L, GAS, Eng Des AEG; 2000 Volkswagen Jetta GL 2.0L; and 2003 Volkswagen Jetta GLS 2.0L, Eng Cfg L4, Eng Des AVH 1. All tests are performed with the ignition key and A/C switched on and the connecters connected to the fan module.

How to check the a / C on a Jetta?

This checks the ambient temperature switch (ATS) (normal open circuit below 32° F, continuity above 32° F). 11. Check for 12 volts to pin T4a/1 (red/black) and T4a/3 (red) via fuses S164 and S180 respectively, in the fuse box on top of the battery, at all times.

What does duty cycle mean on Jetta air conditioner?

A duty cycle above 90 or below 20 will command the compressor off and would indicate a faulty pressure sensor if the compressor is not running and the refrigerant levels are normal. This is a ground-side duty cycle.

Where is the fan control module on a Jetta?

All tests are performed with the ignition key and A/C switched on and the connecters connected to the fan module. The fan control module is located under the radiator and has two connectors: a 14-pin and a 4-pin. 2.

What should the ground voltage be on a Jetta?

The powertrain control module (PCM) will ground this reference to request a compressor shutdown for a wide open throttle (WOT) condition or lack of throttle basic setting. Eleven volts is the normal expected reading at this pin. 4. Verify 12 volts to pin T14/4 (red/gray) via fuse 16, at all times. 5. Verify good ground to pin T14/6 (brown/black).

Why is there no power to the a / C compressor?

Potential Causes: A/C Compressor, A/C Pressure Sensor F129, A/C Switch, Ambient Temperature Switch F38, Battery Auxiliary Fuse Box, Fan Control Module J293 (and Wiring), Fuse or Lost Throttle Basic Settings Test the Fan Control (FCM) module inputs as follows: 1.

Why is my VW Jetta not charging properly?

The problem fuse bracket can be found on all 2001-2005 VW Jetta vehicles When the fuse block corrodes, it prevent field power to the alternator and that will test out as a bad alternator if you just rely on a voltage test at the battery. If you fall for that, you’ll replace the alternator and it still won’t charge properly.

What’s the duty cycle on a Volkswagen a / C compressor?

3. Verify an approximate 70% duty cycle from the A/C pressure sensor at pin T14/2 (white) with the ignition on and the compressor not running (duty cycle will decrease as the high-side pressure increases).

Why does my air conditioner get cold while driving?

One of the most common causes of the symptom you’re describing is when you have a bad or failing AC high pressure hose. The high pressure hose is designed to increase and decrease AC pressure during different driving conditions, since the AC drive belt will increase in speed as the vehicle accelerates.

When does the AC blow warm air or cold air?

The AC on my 2008 2.0 L turbo now only works when I am driving at speeds of at least 30 MPH. When driving at slower speeds or idling, the AC blows warm air. I brought car to two VW dealerships to have their service department diagnose the problem.

Why does my Honda CRV turn warm at idle?

I agree with [email protected], same thing happened to a friend of mine with a Honda CR-V. Hers would cool fine while driving around and then turn warm at idle. I replaced both engine cooling fans (they were not operating even when I connected them directly to battery power) and that solved the problem.