Opel Vivaro 2005: Diagnosing Non-functional Interior Lighting despite OK Fuses and Switches

Question

I have a problem with interior lighting in vivaro. After checking, there is no + on the power supply cable. The fuse is ok and there is + 12v on it. Interior lighting does not illuminate both in the cabin and in the passenger compartment.
The switches are ok - the meter lights up. What could be wrong and where to look for a fault? Could it be related to the ear module? How to diagnose it?

piotrek22101 · Answer

On the left there is a cube on the pedals, through it there is power to the lamps. They may have lost contact.

robert147-k · Answer

The contacts look good, I'll check tomorrow whether the cord is ok

piotrek22101 · Answer

Check the voltage on both sides, wires such as in the lamp.

robert147-k · Answer

And the other way is flying to the fuse or to the module?

piotrek22101 · Answer

As far as I remember correctly to the module and the fuse on the other hand. Check if the fuses are together with the module or as a separate element.

robert147-k · Answer

After preliminary measurements it looks to me that the lamps are controlled by a plus. In this cube I found only 1 wire matching the color and has a (-) transition. Where can I find this module?

piotrek22101 · Answer

The UCH module looks like this.

To check you have 5 pins in the UCH brown bar 9 pin pin 1 ground output to the front light pin2 mass output to rear lights green cube 20 pin pin23 weight from rear door sensors pin27 weight from front door sensors, in green 6-o pin pin, pin5 is a time switch + 12v splitted for 3 lights.

robert147-k · Answer

at the same time, the time wipers (tick relay) and the temperature display stopped working. Is this related to this module? Instead of temperature there are lines and the sensor is good. The wires going to the sensor have different colors than to the display.

piotrek22101 · Answer

I do not have an up-to-date diagram of ears, but rather it goes through it. And what are the pins that I gave you above?

wojtek2510 · Answer

A colleague piotrek22101 at 99% is right, rather the ear will be damaged and the directions work?

robert147-k · Answer

Yes, direction indicators and other modules work. The module has been pulled out, but nothing disturbing is visible and it is not flooded. I will check the wires for tomorrow, do they have a passage and if the colors match the components that do not work. Does anyone have a puzzle of these cubes, what for? My UCH has 2 cubes No. P82000461558 - k. must it be exactly this number created?

robert147-k · Answer

The relays I exchanged in the ear and unfortunately no effect. When choosing a new UCH module, must it be exactly the same number, or is it similar and it is important to mark n3? In my case there is the number p8200 .... 58 k., And cheaper and more is from the number at the end 56k. After disconnecting the cubes from the module and giving +, the lighting turns on, and as the module is put on, it's as if it was on the wire (-). Krancowka works and mass is.

wojtek2510 · Answer

If I'm not mistaken it's immo in my ears, you'll also have to lose

piotrek22101 · Answer

Rather the same number, there may be minimal differences.

jurekk55 · Answer

It's not the relays that's responsible. What can be seen in the driver states? Did you check?

robert147-k · Answer

There is heavy access after attaching the beam. On the table I checked diodes and transistors. The tile was not flooded.

jurekk55 · Answer

What about the diagnosis?

wojtek2510 · Answer

Buy 2 ears often exchanges these modules

robert147-k · Answer

My computer does not see any errors in the module. If I bought such a module, copy the contents of 93c .... And will it work?

jurekk55 · Answer

Well, one as if it is certain. What can be seen in the states.

buliz · Answer

Friend robert147-k how you removed the UCH module. I have a similar problem Vivaro 2007 lack of rear cabin lighting. I can not get to the PRC for it.

robert147-k · Answer

Remove the steering wheel housing and after removing the cubes (after pulling the steering wheel upwards), through the hole, pull it out. It lies on the side of the ignition switch on the shelf. You only miss the back? For me there are not any, and I see that they have a common power supply.

I have to go to someone who has a better computer (clip), because I have a maxi test and he does not show me anything more.
I undressed the wiper switch and there is nothing to attach. You can hear the relay in the ear, and the wipers are standing.

buliz · Answer

Yes, I miss only the back but I have lamps on it because I can turn on manually. Only from the door do not work. Installation checked.

Added after 2 [minutes]:

As far as I know, the power supply on the plus side is common, but because if you left the lighting switched on inadvertently, the controller cuts off the power supply after about 0.5 hours.

robert147-k · Answer

And he cut me off permanently.

buliz · Answer

Tomorrow I will try to look into UCH, I will write what and how.

robert147-k · Answer

I wonder if they could have turned off these functions programmatically?

piotrek22101 · Answer

Probably not, from what I remember, UCH always shuts off after a long time.

buliz · Answer

So after repair. For info how to get to UCH thank you very much. For me after checking UCH, this was not the cause of the lack of lighting. Namely, my Opel in the original version was 6-passenger. After reworking for 9, the electrician incorrectly connected the ceiling lighting beams. It stood + 12V with mass. I have figured out the UCH as well as I will help. If you do not have + 12V on the lights you have only 2 outputs. Fuse or relay in UCH. Relay marked with an arrow.

Added after 2 [minutes]:

You can still look at the paths on the PCB going to the relay, they could burn out at the short circuit.

robert147-k · Answer

Fuse ok, relays already mentioned earlier (nothing is burned). In the computer I checked the states and the control switch switches the wipers, you can start the computer in state 0. As it switches to time, it shows that it has connected but does not start. I will buy a handle and check. Is there an additional relay for time wipers?
I turn on the light in the computer, it's no reaction.
Evidently no + 12v.

Opel Vivaro 2005: Diagnosing Non-functional Interior Lighting despite OK Fuses and Switches

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