![]() Are any wires loose or corroded?Īre there damaged connectors or pins? Are all components installed and installed correctly? Check to make sure the vehicle batteries are at 75% state of charge or higher. Perform Preliminary Checks – Perform a thorough visual inspection. Gather Information–What happened and when? Under what conditions? When did the symptoms begin? What else occurred at the time?Ĭheck Diagnostic Trouble Codes – Do the logged codes correlate to the symptoms and probable causes? Were the codes logged repeatedly? Is the complaint due to misunderstood, customer-selected, programmed parameters? Verify the Problem – Operate the complete system and list all symptoms. Before proceeding with diagnosing and troubleshooting, there are several important steps: The Diamond Logic® Builder software can be used to aid in diagnosing and troubleshooting electrical / electronic system problems. How to Install Navistar Diamond Logic Builder (DLB) Software ![]() Navistar Diamond Logic Builder (DLB) Free Download
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