Diagnostics

DiagnosticsAll modern vehicles use Electronic Control Units (ECU’s) to operate & monitor most electrical & mechanical components.

Utilising many sensors, these components continually report information back to the main ECU.

This information enables the engine management system to make adjustments to ensure that the engine runs at its optimum settings.

Should any faults be reported then the Engine Management Light will appear on the dashboard and the fault will be stored in the main vehicle ECU to enable a vehicle technician to connect a tester, interrogate the ECU and ascertain the correct diagnosis.


JEM have invested a small fortune into purchasing the very latest diagnostic equipment. We have also invested in training the vehicle technicians in the latest techniques of fault diagnosis.

We have diagnostic equipment compatible with the following makes of vehicles:

  • TOYOTA
  • NISSAN
  • HONDA
  • LEXUS
  • MAZDA
  • ISUZU
  • SUBARU
  • DAIHATSU
  • HYUNDAI
  • SUZUKI
  • KIA
  • DAEWOO
  • BMW
  • MERCEDES
  • AUDI
  • VW
  • VOLVO
  • SAAB
  • FORD
  • VAUXHALL



Company Details

JEM Ltd
Hyde Estate Road
London
NW9 6JX

Phone: 020 8358 6000

Registered in England 1222396
VAT number: 629 9427 94

Our opening hours are 7am - 7pm Monday to Friday & 9am - 5pm on Saturday. We are closed Sundays.