Condition based maintenance (CBM) of a vehicle primary electrical system

A condition-based maintenance system for a vehicle having an engine, comprising:

• a diagnostic connector;
• a computer coupled to the diagnostic connector via a programming adaptor;
• and
• a primary electrical system including at least a battery, a starter, a key, an alternator, and a cable connecting battery terminals to a battery voltage output of a diagnostic connector,
• wherein the computer is configured to perform:
• obtaining a plurality of expected parametric values representing a state-of-health (SOH) of the primary electrical system of the vehicle;
• starting a series of operations to exercise a plurality of operating modes of the vehicle;
• continuously reading a plurality of voltage values from the battery voltage output of the diagnostic connector of the vehicle, wherein the voltage values represent battery voltages during the plurality of operating modes,
• performing analysis on the plurality of voltages values to generate current parametric values of SOH of the primary electrical system, wherein the performing analysis includes at least performing temperature compensation for the battery and the cable;
• based on comparison between the expected parametric values and the current parametric values, determining whether a condition-based maintenance is required;
• and
• after determining that a condition-based maintenance is required, present a maintenance alert to an operator of the vehicle.