WorkshopData Electronics

A unique tool, which guides mechanics to a rapid, precise identification of system and component errors.

WorkshopData Electronics

HaynesPro’s electronic data has always been an important aid to workshops. Nowadays, with electrical systems and advanced technologies becoming an ever more significant feature in modern cars, it has become essential. At its heart sits HaynesPro’s exclusive Vehicle Electronics Smart Assistant Mk II (VESA).

Fuses Relays


Clear fuse location and indentification feature.

Ever helpful, HaynesPro has created an Electronics module packed with essential information, typified by this clear fuse location and identification feature. Fuse boxes may be installed in various locations on a vehicle, making them more difficult to find. Using the data in Fuses and Relays minimises the time spent on searching.

Car | Truck

Subject Feature
fuses and relays Fuses and relays
  • Fuse and relay box locations
  • Fuse and relay overview


An innovative electronics diagnostics application..

Probably unrivalled in the aftermarket arena, VESA is an innovative electronics diagnostics application. It uses data retrieved from the vehicle’s CAN-Bus system to help mechanics diagnose faults and component errors which generate fault codes. It takes an OEM’s often bewildering and unfamiliar wiring schematic, converts it to a clearer, more readable format and then zooms in on the component and wiring under consideration.


Subject Feature
vesa VESA™ MK II (Guided diagnostics)
  • Wiring diagrams for engine management, ABS, ESP and air conditioning
  • Component locations and information
  • Fault codes (manufacturer and EOBD)
  • Diagnostics wizard
  • Ground point locations
  • Links fault codes to the Smart Module


Subject Feature
vesa VESA™ MK II (Guided diagnostics)
  • Engine management
  • ECAS (Electronically Controlled Air Suspension)
  • Diagnostic wizard
  • Fault codes (manufacturer’s and EOBD)


One of the clear goals of HaynesPro’s data is to reduce the number of unbillable hours. The time spent on searching for ground points, control units or the EOBD connector location should be reduced as much as possible. To facilitate this, HaynesPro’s electronic data offers direct links to such locations.

  • EOBD connector location
  • Ground point locations
  • Control unit locations

Electronic Procedures

Disconnecting/reconnecting a battery used to be a straightforward task. In modern vehicles, the procedure is more complicated. The mechanic needs to know what procedures to follow after reconnecting a battery. This will prevent the customer having to return the vehicle to the workshop due to errors in systems such as parking assistance or power windows. Due to the growing number of hybrid vehicles on the market, mechanics also need specific instructions on how to work safely on these vehicles.

  • Battery disconnection/reconnection procedures
  • High-voltage circuit deactivation procedures
Electronic Procedures
Warning lights

Warning lights and indicators

An extensive list of possible warning lights, specific to each manufacturer, with a short description and solution.

  • Make-specific overview of available warning lights
  • Covering both the European and the US car park


Clear, 'localised' wiring schematics.

Clear, ‘localised’ wiring schematics for all key vehicle features, with wire and component trace functionality for fast, efficient, first-time fixes.


Subject Features
comfort wiring Comfort wiring diagrams
  • Wiring diagrams covering e.g. door locks, windows,  airbags, exterior lights, starting/charging and wash/wiper systems
  • Pan and zoom functionality
  • Highlight functionality to trace corresponding wires and components
Comfort Wiring