Ford Fiesta Dashboard Clock Cluster Error

[vviktor]

Hello!
I have a 2007 FORD JC3 Fiesta Van 1.4 tdci MK5. Engine code: F6JB

My problem is that the clock often drops the hands, the LCD display disappears or "-" lines appear, or the immobilizer often flashes and the SRS light usually comes on.
It doesn't always do the same thing. The car doesn't even have to move, shake, run the engine or do anything, the clock just disappears and then the clock comes back.
I also resoldered the PCB-26-PIN connector, moved, pulled all the cables (at the clock unit and ECU, under the battery, in the glove compartment), checked all the fuses/relays, checked all the connectors (ECU, clock unit (26PIN)), but nothing solved the problem. I replaced it with an identical Ford clock unit, but it did the same thing, so it's probably not the clock.

Has anyone had a similar problem?
Does anyone know a wiring diagram for the 26-pin clock connector?
Or maybe an electrical diagram for the car that shows where the wires come from and what colors they are?

Thanks a lot for your help!

 

[Handy Andy]

Are you losing any other instruments or displays in the console, like backlit dash-lighting?

If not the Clock system itself can fail, it's memory backup and keep alive system it uses to help keep the time while the engine gets started and when off, seems to have failed - meaning either replacement, or the power supply filtering on-board the display are bad, they no longer hold a charge or can filter out spikes causing these intermittent crashes.

Don't have any schematic for that, but in light of the issue, the caps (capacitors used to filter and keep power timing for the clock) , onto a simple blown diode to route power to only the keep alive memory when the ignition is shut off (Battery backup) may have opened due to bad capacitors or a voltage spike that Murphy and his Laws claimed, the the 2 cent fuse will be protected from blowing by having the most expensive part in the circuit it protects - blow first.

Ford, GM every automaker, seems to have followed his advice.

 

[vviktor]

Nagyon szépen köszönöm a válaszát

Ritkán kapcsol ki a rádió, vagy tűnjön el a jelzőfénye

Nem az óra, hanem a sebességmérő/fordulatszámmérő/üzemanyagszint-jelző/vízhőmérséklet-jelző
Az óracsoportnak írtam, mármint a műszerfalnak.

„II”-re kapcsolom a gyújtást, és az óra gyakran forog, az immo gyorsan villog. Mindent mozgatok, de semmi változás. Hirtelen, 1-10 perc között, megjavul a műszerfal, és beindítható az autó.
Voltak esetek, amikor a mutatók leestek vezetés közben, majd visszajöttek. Az autó továbbment.

Kicseréltem a műszerfalat (egy másikra, amin ugyanolyanok a műszerek), és gyújtásráadáskor ugyanezt csinálja, de az autó sosem indul el vele, mert más az indításgátló.