Urgent help with UNS S10 2005 2.4 gasoline

You should scanar the truck and the code and description of the fault should come out, you can also check if they have put a short running switch or motor lock in the alarm, contact sheet, fuses, in that model you are looking for the obdii plug followed by 2 flashes that is the code 12 of start of communication with the ECU then repeats it twice more finished the third code repetition begins to show the new codes and write them down to know what it is about to erase the codes once repaired you must disconnect the electronic injection fuse EFI for 20 seconds

Czech if pulse comes to the coil, that is, positive current and pulse, to start ruling out. If blocked you will have to scan it