Car Diagnostic Software for:
Mobile vehicle computer diagnostic service using professional test equipment and trained engineer.
Drivers and fleet operators require the best performance from their vehicle for comfort ,reliability and fuel economy.
Problems with the vehicle engine management, fuel & ignition systems may cause
Reasons for mot emissions check failure may include :
Excessive Carbon Monoxide (CO) content in petrol engine exhaust gas
Excessive Hydrocarbon (HC) content in exhaust gas.
Excessive Smoke emission from diesel car or van
Vehicle operating conditions including regular journey distance and driving cycle will have a huge impact on the type and frequency of servicing needed.
A vehicle operated on frequent short journeys may not reach normal operating temperature and may also suffer from battery electrical charging system problems.
Exhaust gas recirculation (EGR) designed to reduce exhaust emissions can cause build up of carbon and sludge deposits in the intake manifold resulting in blockage and restriction of air intake.
Carbon deposits can cause malfunction of items such as;
Idle speed control motor sticking
Throttle flap sticking
Exhaust gas recirculation (EGR) valve blocked
Vehicle manufacturers develop generic engine management software for production cars to optimise fuel efficiency
combined with low exhaust emissions and driveability over a wide range of operating conditions.
Electronic engine management system software control parameters are stored in the vehicle computer engine electronic control unit within EEPROM's as a software 'map'.
Motorsport and performance tuned vehicles may be designed or remapped with specialist modified engine control software maps written for sports performance to provide increased fuelling and power output often at the expense of driveability.
Performance upgrades may be available which allow specific changes to the original software to meet engine modifications perhaps where aftermarket parts have been added or rework carried out such as cylinder head ported and gasflowed, or flywheel lightened and balanced, to meet individual driving requirements.
Manufacturers extend service intervals to reduce fleet operating costs and make new vehicle purchase attractive.
Many vehicles are equiped with onboard service indicator lights to prompt the operator when a service or inspection is due.
The service warning alert function is computer controlled and may based on time, mileage, or engine running hours frequency calculation.
Service Light Reset may require a specific procedure or use of diagnostic equipment to reset computer memory.
Imroved fuel consumption and reduced maintenance are benefits of vehicle computerised engine management through electronic control of ignition timing, fuel mixture, and idle speed.
Diagnostic test scan equipment can read live data and fault codes from vehicle control systems to check operation and vehicle health.
Sensor inputs measure :
Driver demand accelerator pedal throttle position Sensor , Clutch switch, and Brake switch
Engine temperature from coolant temperature sensor and intake air temperature sensor
Engine load from manifold absolute pressure (Map) sensor, mass air flow (maf) and air temperature
Fuelling from exhaust gas emissions (Lambda sensor)
Engine speed, timing and position from carankshaft position sensor and camshaft postion sensors
Vehicle speed from transmission speed sensor or wheel speed sensor.
Input signals are transmitted along wires to a central computer, (ecu) where the received signals are processed
and compared to programmed values stored as a memory map, then output values calculated, signals sent along wires to
output actuators such as
Fuel control pressure regulator
Idle speed control valve
to maintain performance factors such as smooth engine running, fuel economy, and low exhaust emissions.
Various factors can affect the efficient running of your vehicle engine :
Manufacturers test extensively whilst developing new vehicle models however unforeseen problems may only show following in service vehicle wear and tear.
Faults affecting exhaust emissions or driveability can sometimes only be corrected be updating the control unit software
The type of microcontroller chip inside the control module will determine the method required to update software.
In some cases this may require replacement of the program microchip.
Many vehicle software updates may be 'flash' programmed via the vehicle diagnostic connector using a pass-thru (SAE J2534) programming technique.
Updated calibration software is downloaded from the vehicle manufacturers website and transferred to the vehicle computer using the pass-thru interface
A manufacturer may release information as a Technical Service Bulletin (TSB) if specific recurring faults affect a particular model.
Some tsb information may be restricted to the manufacturers dealer network.
Mobile service for car electrics repair in Shrewsbury and Shropshire surrounding areas.
Telephone 01743 884888 for booking.
Computerised vehicle diagnostics is a means of using the ability of the vehicle computer control system to monitor the condition of vehicle components.
Unsure if you should drive the vehicle with a dash warning light on - We provide a breakdown callout mobile service that travels to you.
A fault code may be generated and logged in a control unit when a system exceeds preset parameters.
Intermittent faults which occur during driving may be logged as an historicl error or stored fault code which causes the dashboard warning light to illuminate.
Random disconnecting of electrical connectors in the engine bay may also cause fault codes to be logged.
Most modern vehicles require diagnostic equipment with dedicated software to interrogate the relevant control module for stored fault codes.
Automotive system electrical diagnostics involves an interrogation scan of the vehicle computer for stored fault codes using suitable diagnostic equipment such as a scan tool fault code reader.
Some older vehicles (usually Japanese) have a self diagnosis function allowing the the fault code to be read by counting the flashes of the check engine light and looking up the value in a reference table.
Following testing, a faulty wiring circuit may be repaired or component cleaned or replaced.
Our vehicle diagnostic equipment is capable of
Automotive diagnostics involves extensive technical training and experience combined with complex electrical and mechanical system testing - much more than just plugging in a scan tool to read fault codes.
Diagnostic error codes provide a clue as to what the control system recognises as a fault but remember it is an electro mechanical system which is under repair.
Motor trade industry experience combined with investment and continuing professional development of staff through a system manufacturer training courses aids vehicle system diagnosis & repair.
Vehicle Software available for car and light commercials
Manufacturer Systems include : Ford,Bosch, Sagem, Renix, Delco, Denso, Autoliv, Lucas,
Vehicle System diagnostics for :
Petrol engine diagnostics , electronic ignition, fuel injection.
Diesel engine diagnostics, Mechanical and electronic Diesel Fuel Injection including Lucas EPIC. Common Rail Diesel Fuel Injection . Diesel pump electronics
A range of diagnostic equipment with regularly updated software for older and more modern vehicles may be used to provide
Fault code reading
Fault code clearing
Sensor and Actuator testing and monitoring
ECU interrogation for live data.
Mobile Diagnostic testing available in Shrewsbury, Telford, Shropshire & Mid Wales areas.
Bosch KTS equipment provides control unit diagnosis and multimeter functions
Breakdown callout and diagnostics in Shrewsbury,Shropshire areas.
Diesel Fuel Injection Equipment
Diesel Glow Plugs and Preheat timer Relays