BioPower TECH Vehicle Charging System Analyzer Operation Display:

Sr. Charging System Operation and Support Engineer at Globe Telecom

BatteryMINDer Solar Charging System - 12 Volt, 15 Watt Panel, Model# SCC-015

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  • Though your engine has a direct ground to the battery’s negative post, this does not ensure a solid ground for the car’s electrical system. Why? Because the body is “negative ground,” it carries electricity the same as wiring. The engine to firewall ground strap creates an electrical path from battery to engine to body. Because your engine and transmission sit on rubber mounts, the current has a tough time finding a path to the body (negative ground), which contains your Mustang’s accessories, including the ignition and charging systems. Without an engine to firewall ground, ignition and charging system operation is hit and miss.

    Though your engine has a direct ground to the battery’s negative post, this does not ensure a solid ground for the car’s electrical system. Why? Because the body is “negative ground,” it carries electricity the same as wiring. The engine to firewall ground strap creates an electrical path from battery to engine to body. Because your engine and transmission sit on rubber mounts, the current has a tough time finding a path to the body (negative ground), which contains your Mustang’s accessories, including the ignition and charging systems. Without an engine to firewall ground, ignition and charging system operation is hit and miss.

  • Until the 1990s, the charging systems in vehicles were controlled by some form of a voltage regulator in or near the actual . The light was connected to the and when the key was turned, the light would ground through the . When the engine was started and the produced voltage, the voltage would travel throughout the vehicle's electrical system, including back up the wire that lead to the light. When the charging system light had two sources of voltage reaching it, it no longer had any ground and would be turned off. When voltage at either end of the light became too imbalanced—say from the being low or high or the putting out too little or too much voltage—it would cause the battery light to illuminate.

    As vehicles became more sophisticated and the number of computer systems kept growing, control of the charging system was moved from the to the powertrain computer. This allows for a much finer attenuation in charging system operating range. This is necessary because the newer, networked on-board computer systems needed "cleaner" and "noiseless" operating voltage so that the accuracy of the sensor data and learned adaptation stayed within the specified tolerances. In these newer vehicles, the charging system light is illuminated by a command from the powertrain computer when it sees an irrational difference between the desired system voltage and the actual system voltage.

    Thank you for your response. Actually, the FR circuit between the Alt and ECM B Connector Pin 13 is responsible for controlling engine idle. Not the ELD sensor. I put some additional information below explaining how the Honda Dual Charging System operates (just as an FYI).

    CurrentAccount Manager at Ericsson
    PastPacket Core Solution Responsible at Ericsson, VAS & Charging system Operation TL at Orascom Telecom Algeria, Telecom Engineer at...
    EducationUniversité des Sciences et de la Technologie 'Houari Boumediène'

  • CurrentIT Consultant at Virtusa
    PastIT-Specialist –Telco Product Operation at IBM, Executive –Billing & Charging system Operation at Dialog Axiata PLC, Customer Support...
    EducationSLIIT, London Metropolitan University, EXIN your ICT competence partner
    SummaryA highly motivated and adaptable individual with organizational, planning and delegation skills who is totally committed to the job at...

    Because the ammeter is a complicated gauge for most people to understand, many manufacturers use a voltmeter to indicate charging system operation. In early systems, the voltmeter is connected between the battery positive and negative terminals.

Ammeter connected in series to indicate charging system operation.

Because the ammeter is a complicated gauge for most people to understand, many manufacturers use a voltmeter to indicate charging system operation. In early systems, the voltmeter is connected between the battery positive and negative terminals.