Manual servicing can cause fault codes

15 July 2014  

As electronic control takes hold of vehicle systems, Delphi says it is vital for technicians to be armed with the knowledge and diagnostic tools needed to service and maintain them effectively. The firm warns that manually servicing the vehicle can confuse the control system and result in fault codes. Using the example of electric handbrake systems, these must have their ECUs engaged while winding back the calipers so the pad position is indexed, essential when replacing brake pads so the unit knows the thickness of the pads so it can engage correctly. Delphi uses over 20 friction materials in its brake pad product line to closely match OE parts and they also feature an underlayer which has a higher proportion of resins than the main friction material, used by many OEMs to dampen noisy vibrations and provide a higher bonding strength with the back plate. Its pads also feature shims, slots and chamfers.