air conditioning problems

[redgti16]

Hola amigos, no consigo hacer funcionar mi aire acondicionado, se le cambio el ventilador, modulo de ventilador, todos los sensores, y sigue sin andar, tiene gas porque lo he revisado dos veces. He mirado el cableado y los pines 2 y 3 del modulo no dan corriente pero no se si deberian darla tampoco, el caso es que no se activa ni el compresor ni el ventilador (pero si al llegar a 90°) . ¿Alguien puede ayudarme?

I am also trying to install climatronic but it does not work with any of the manual controls either

[mk2]

It depends which compressor system you have, as there are two types- one with a basic on-off solenoid clutch and the other is a PWM controlled lever type.

Both types rely on the CCM (comfort control module) I think, but not sure. All the sensors must be working.

On other VW models (golf/polo/passat/bora), it is often the power bus circuit inside the fuse box (on top of the battery) that has a loose connection.

There is also the fan controller module which might affect the AC, depending on which system you have.

 

[redgti16]

Thanks for your help MK2, the fan module has been changed for a second-hand one, the temperature and pressure sensors, and everything that has to do with the air and the motor are new, the compressor has been changed, and the pins 2 and 3 of the fan module does not give me any type of power or signal, the car has not been able to move for 2 months, I have VW schematics but I cannot solve anything.

[redgti16]

the compressor is sanden type if that helps

[mk2]

I think it might be the power bus, on top of the battery if you have changed everything. Check the battery fuse block. Does the low speed over-heating fan ever come on? Check power to the fan module (direct from battery).

Or... maybe there is a broken wire in the engine area. With a meter, you may need to check from the pump plug all the way to the other end. It takes time.

[redgti16]

The battery fuses were checked and there is a positive from nut to nut, 12v reaches pin 4 and 9 to the fan module, the fans do jump due to engine temperature, I think the problem is pins 2 and 3, which do not reach nothing

[redgti16]

for what it's worth