Highly integrated electronic systems are commonplace with today’s commercial diesel engines

Engine management, cooling strategies, fuel metering, turbo control, and after treatment operations are no longer mechanical processes, they are software driven.
As a result, Logicar says the scan tool a workshop chooses directly affects diagnostic accuracy, repair efficiency, and the continuing reliability of the vehicle being serviced.
A quality commercial scan tool must begin with deep system coverage.
Modern diesel platforms often include dozens of modules: ECM, TCM, BCM, ABS/EBS, body systems, cooling controllers, DPF and SCR units, telematics interfaces, and more.
A workshop grade scanner must not only read and clear codes but access manufacturer level data streams, freeze-frame logs, learned values, and system specific parameters.
Without this, Logicar says a technician cannot validate whether a fault starts from a sensor, wiring, software mismatch or mechanical failure. Keep in mind, some conditions require a diagnostic subscription service.
High resolution live data is equally critical, explains Logicar. Diesel diagnosis depends heavily on evaluating variables such as boost control, rail pressure, injector balance rates, EGT temperature ladders, DEF dosing activity, cooling fan strategies and differential pressures across DPFs.
A professional tool should support fast refresh rates, graphing, and the ability to compare multiple data points simultaneously.
Workshops should also look for strong bi-directional control. The ability to command components, actuating EGR valves, performing DPF regens, controlling cooling fans, cycling injectors, priming fuel systems or initiating SCR tests, enables technicians to isolate faults accurately.
Without these routines, Logicar says diagnosis becomes guesswork, often resulting in unnecessary part replacement and extended downtime for commercial fleet customers.
Another key requirement is support for modern communication protocols, including CAN FD, DoIP and secure gateway access.
Many late model trucks and light commercial diesels now encrypt diagnostic access; a professional scanner must be built to handle this.
In addition, reliable connectivity, remote diagnostic support, and regular software updates ensure the tool advances as manufacturer systems change.
In summary, Logicar says workshops need a scan tool engineered for depth, speed and control.
It states that purpose built platforms such as the Thinkcar Master CV deliver the commercial grade coverage with over 190 commercial vehicle brands, bi-directional capability and protocol support required to diagnose modern diesel systems with confidence and accuracy.

For more information or to request a demo, call Logicar on 1300 322 782 or visit www.logicar.com.au