Climatronic: This time, we're talking about cable harnesses.

I want to purchase a Climatronic wiring harness via eBay. However, this harness is for the Climatronic from the 1992 Passat 35i. This harness should be compatible with my Passat 35i, which is a 1996 model. Does anyone know if there are differences in the pin configuration?

Best regards, WarLord

Hello WarLord
Since I've been researching this topic recently, I can inform you of the following: Generally, the cable harnesses are usable. There are differences in the radiator fan control, whether it's 2-stage or 3-stage, depending on the engine code and whether it has an auxiliary coupling or automatic transmission. You should definitely obtain a wiring diagram for the corresponding vehicle due to the different pin and connector configurations in the central electrical system. However, with some knowledge of electricity, it is not a problem.
Dashboards for 93 models can be obtained from me, with precise specification of model year and engine code.

Best regards, Benno

[Translating...]Hm, das hört sich nach Gebastle an. Mein Passat ist ein 35i BJ 96 mit 1Z 90 PS TDI Motor, keine Automatik mit nachgerüsteter AHK. Was ist denn so unterschiedlich zwischen der zweistufigen und der dreistufigen?

Gruß WarLord

Hi, can I join you?
I participated in a PD (project development) last year with a man. Climate change, which has been artificially created, should not be underestimated!!
I am now installing a Climatronic in my G3 1Z. I just won the parts on eBay and am eagerly awaiting them (with a complete wiring harness!!!). Now I'm preoccupied with a special topic. Do you think it's possible to install the climate control (man.) from a 35i into a G3? I've already compared in the edgar, of course the climate hoses won't fit perfectly. But what about the fan housing, the electrical system, etc.? Can someone send me a wiring diagram for the climate control of a 35i? I have quite a few from the G3 and G4 for replacement. I happened to already have a climate control cable tree from the engine compartment of a 35i.
Best regards, Tom

[Translating...]Hm, ob die Sache mit dem Golf III passt, habe ich mich auch gefragt, da bei mir sogar schon eine Golf IV Climatronic im Gespräch war (die sind billiger bei Ebay). Hab es dann aber wieder aufgegeben (blau gefällt mir nicht wirklich, finde die Dinge vom 35i ausserdem sehr schön gestaltet), da ich ein Steuergerät bei Ebay gefunden habe (mit ECO Funktion für den 35i). Ich bräucht halt nur noch einen exakten Plan, welcher Draht wo rein muss und was wie belegt ist (vom 35i). Das SSP habe ich schon, das geht aber nicht auf die Belegung der Teile am Kasten ein. Manuelle Klima habe ich schon, werde aber den kompletten Heizungskasten rausmachen, den neuen rein, neuer Trockner, das tolle Teil einmal mit Druckluft und Stickstoff reinigen (natürlich vor dem Trockner) und dann wieder befüllen. Aus welchem BJ stammt der Klimakabelbaum des 35i? Einen Kasten habe ich schon (einen vom 35i 89 - 93), werde mir aber noch einen holen, da bei meinem ein paar Teile abgebrochen sind (unter anderem an einer Unterdruckdose) und der Verkäufer drauf beharrt, dass das Ding bei ihm ohne Probleme funktioniert hat.

Gruß WarLord

Hello!

Between the cable harnesses, the differences are not so significant. For example, the 3-stage fan has an extra control unit for the cooling fan. Depending on the model year, it is also present in the 2-stage fan, in which case the 3rd stage is not activated. On the Turbo Diesel (AAZ) and VR6, the air conditioning is also switched off if the coolant temperature is too high. If you install such a cable harness in the 1Z, you can leave the connections open. However, you should know what the connectors are for. Otherwise, you will have doubts. The Passat 35i facelift also has a control unit for the 2-stage fan, as far as I know. Sits in the engine compartment.
However, it is not necessarily necessary to install it if you are using the existing cable harness. It is also important to know that the wiring configuration in the central electrical system has changed since model year 1994. (For the same function) Therefore, I strongly advise you to
Please view the schematic of the donor vehicle.

When you're buying a used Climatronic, be sure to also consider the "small parts." In addition to the larger items, the following must be included: a temperature sensor for the heating/cooling system (located in the hose before the heating/cooling unit), an interior temperature sensor with a fan (in the dashboard between the radio and the speedometer), the corresponding large cover in the dashboard, as you cannot make the cutout yourself, the air duct for the vents above the radio (there is still a flap with a vacuum chamber), the photosensor in the left speaker cover, and finally, the Rais for Climate socket 1. If only one part is missing, then a hunni will not get anything extra.
Before you install the box, you should definitely test the servo motors for the valve control. From the wiring diagram, identify the two wires for each motor and apply 12V. The motor should run audibly if it doesn't, the voltage may be reversed, as it may be at its limit. If he's not running now, he's broken and needs to be replaced.
One more tip from me: If the fan isn't running, there are 2 individually controllable relays in the climate control system. One of them carries the entire current for the fan and is heavily loaded. As a result, the solder joints can become loose over time, leading to failures such as inexplicable intermittent contacts. Instead of replacing the expensive relay, try to resolder the large solder joints in the relay. Applies to Relay Socket 3, Motor Control Unit power supply.
And now, have fun installing!

[Translating...]Hm, da ich schon ne manuelle Klima habe, denke ich, werde ich mal den Ausschnitt von dem du schreibst nicht brauchen, oder? Haste mir mal ein Bild, wo der drauf ist?

Gruß WarLord

Hello Warlord,
The parts I wrote are, except for the relay, only for Climatronic and not for the manual air conditioning system.
That's why I specifically wrote the list.
Especially regarding the cutout. It's not just a hole. From the back, the temperature sensor is clipped in, and from the front, a small cover grid is attached. I'd like to try and see if I can copy a diagram from AKTE.

Best regards, Benno

[Translating...]Hm, so eine Scheisse. Die ganze Sache kotzt mich jetzt schon an. Den Ausschnitt scheine ich schon zu haben (zumindest in der Abdeckung). Kannste mir dann noch Bilder von der Luftführung bringen (inkl. Unterschiede von der manuellen Klima)? Sind die Kästen vom B3 zum B4 anders?

Gruß WarLord