Computer box not recieving 12v

Hi @bonganisib42530

Does the engine crank when you turn on the ignition key?

Have you checked that the battery is OK?

It used to crank before i thought its the crank sensor but only to find out after diagnosing it had a code that reads +after relay supply

@bonganisib42530

Did you check if relay #1 Ignition main circuits relay 1 in the instrument panel fuse box is operating (click sound) when the ignition key is turned to start.

Also check relays #5 Starter motor relay, #9 Ignition main circuits relay 2, fuses F13, F14, F18, F22 & F24 in the engine bay fuse box are all OK.

All the above need to be OK when cranking and having the engine turn on

I dont know which relay is the ignition relay there are 3 of the brown ones 20A then there are 2 pink 40A then purple 50A but all the fuses are ok i once tested a bridge that i think is the ignition relay and it blew the ignition fuse thats maybe when i started realizing that it may be the ignition relay

@bonganisib42530

Here's a link to the fuse box diagrams for the 2006-2012 Clio models (you didn't say which year your vehicle is) that shows the location of the relays and fuses in the 3 fuse boxes i.e. main fuses box and power supply box in engine compartment and fuse box in instrument panel in the passenger compartment.