LMT – Test Harness Design and Manufacturing Support

Project Scope

The electronics and electrical components of the large mining trucks (LMT) are integrated within the machine, working in coordination with the mechanical parts to ensure seamless operation. Therefore, it is crucial to thoroughly test and validate these components before the LMT trucks are deployed on the road.


Business Challenges


  • The analogue signals,

  • Pump Outlet Pressure Sensor

  • Oil Temperature Sensor

  • Filter Switch

  • Bypass Solenoid

  • Wheel speed sensor RH, LH -These signals could be active while machine

    is running


ARi’s Solutions


  • Our objective is to establish a connection (Bridge) between the LMT and the

    VMC (Virtual Testing Machine). All signals must be transmitted to the VMC

    using harnesses

  • We have incorporated these signals in a Differential Box.

  • These signals are extended from Transmission > Diff box outside > Diff box

    inside harnesses


ARi’s Value Proposition


  • We categorized the harnesses according to the component location area on

    the Two machine.

  • The harnesses are listed as follows:

    • Harness-A, B, C, D, CE, Transmission, Front Light, Rear Light, Diff Box

      Inside, Diff Box Outside



  • Within harnesses A, B, and C, D, CE the primary chassis signals can be

    extended to VMC through the end connectors. The VMC will simulate the

    analogue signals and test them under the most challenging working

    conditions of the components


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Case Study

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