Lagoon II - No Ignition/Start, Laguna II 1.9 dci 120km '03: Operating System Removed & Relay Issues

Patient Laguna II 1.9 dci 120 km year 2003. The car arrived on the tie. The cause of the fault is that the operating system has been removed from the operating engine in the box next to the battery. After removing it, the engine went out. Relay inserted and silence. After inserting the card, the display of the radio, radio and the immo LED lights up with continuous light. After removing the card, the above-mentioned things go out and the LED blinks as it should. Connected clip and communication only with UCH. The rest of the systems, of course, do not react. All fuses. The computer shows in the ears no plus after ignition. A reader replaced by a functional one did not help. After bridging the relay in the fuse box under the steering wheel the ignition has returned and there is communication but everywhere there is a fault in the multiplex network. In the pictures you can see the blocks and the bridged bridge. Maybe one of the colleagues had a similar fault and shared knowledge. Personally, I bet the fuse box under the steering wheel or ears. I will add that the steering lock is not active. The steering can be moved. Kartay are two including one nówka piece made two days ago and are 100% operational.

The ignition lock is active because you have no communication with the ECU. Check the controller's power supply, that I will not mention the details of fuses. It's possible that you already have a fried driver. Have you checked what you are missing from controlling the system relay? If the plus, zapodaj exterior and communication will come back and the car should fire. Then look for the fault.

I'm already writing Paul. As for the fuses checked. (under the hood, aku wheel, ear circle). As for the system relay it is power, and there is 1 permanent plus. The next pin is the gate (passage or how each one is called) and the next pin is control. After bridging the pins, it's still the same. No reaction.

With a light bulb you checked this plus constant on the relay coil? Diagram you have? A scatter of fuses and relays, too? See if after bridging, a plus appears on the fuel pump relay.
See if you have a flasher after ignition on the ECU, the central cube M2 and M3 from this relay and an important plus is to be on the E3 of the same cube. The pins are described on the bone.

I talked to the owner of the car today and said that things were done before. He went into the car, put in the card and the immo LED was still on, only the radio and the small display. So far, so they rode that when he put in the card and the darkness got out, he waited from one hour to several, rehearsing and firing as if nothing had happened. Now it has intensified and he decided to give me that egg. If you have any hints, I would like to listen. Greetings .

Check the card's pocket, specifically the micro contacts.

The engine controller has to get +15 after ignition, then it puts mass on the relay. You do not have 15.

You can tell me where I'm sleeping 15 .... Fuses all as I wrote. Reader replaced, fuse box too. No change . In my opinion, only uch or bolt. Maybe you have some suggestions on what you can check. Greetings .

tomasz sadowski wrote:

Can you tell me where I'm 15 ...

Pawel wawa wrote:

See if you have a flasher after ignition on the ECU, the central cube M2 and M3 from this relay and an important plus is to be on the E3 of the same cube. The pins are described on the bone.

After all, you have exactly given, with ECU pin numbers included.

As usual, French wonders. I unhooked the ankles at the engine control unit to check what Paweł Wawa wrote. I found the right pins, I put together the whole with the wires marked. I connect the battery cache - it started to light. It's good . The car is working properly. I will make contacts by ecu and see how things are. At the moment the ignition works, the connection of the multiplex is starting. I do not know if it's ecu or something else. At the moment, he is testing and will see. I will inform you for posterity about the effects of success or failure. Thank you for your help . I am not closing the subject waiting for the development of events.

Maybe the pins in which "legs" enter from the cubes / transmitters?

Today, the whole fuse box near the aku and the engine controller are going to be splattered. The car behaves as if the relay has stuck the contacts and after a time they let them out. Only question where ???

Hmm, and maybe it was not washed with a pressure washer? Do similar stories?

tomasz sadowski wrote:

I found the right pins I stuck to the pile

And tzeba was a check that lacks power.

And what is the state of ET071 Dziewicza slides the column "YES"
Stan suggests that there is no code in the steering column blockade or something has fallen into the UCH that it claims so.
In Doll II there were such cases that the system hung.
Frequently, it was easy to disconnect the aku, and in the long-term to change the lock. I do not remember that we exchanged UCH for this reason
The principle of switching the relay on after ignition is such that the reader sends the immo code from the cards to the UCH. UCH to lock, compare codes and return info about the correct code. The ignition relay is started after ignition. The engine ECU receives power and sends a query to the UCH. If the code is correct, the name is turned off. Proposal:
To switch on the ignition is not needed engine ECU.
- If after inserting the card the ignition does not turn on and the immo indicator is on, there is a problem with the exchange of codes between the column lock and the UCH
- If the control light immo blinks after inserting the card and the ignition does not turn on - there is a problem with comparing the codes between the card and the UCH
- If, after inserting the card, the ignition is turned on and the immo indicator is on, there is no query to the UCH from the engine ECU page (the ECU fails to report).
- If, after inserting the card, the ignition is turned on and the indicator light is flashing, there is a mismatch in the codes between the UCH and the ECU
I think I have not made a mistake
This is a collection of my observations from various repairs of the famous Laguna II model
Perhaps my inventions will be useful to somebody
It is possible to look at the battery condition or sometimes its voltage does not create any transients in the system

For descendants, I will write that another fuse box has been substituted and this has given a satisfactory result. After replacing the fuse box under the steering wheel everything works fine. Thank you for your help .