Engine Electrical System

Battery Sensor Description and Operation

~1min read

Description

Vehicles have many control units that use electricity. Each unit controls its own system based on information from various sensors. Therefore, stable power supply to these sensors is essential for obtaining accurate information. The battery sensor (A) is attached to the battery negative (-) terminal. It transmits battery voltage, current, and temperature data to the ECM, which then uses the signals to generate the charging voltage.

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A quick Hyundai i20 quiz: every answer comes with an explanation and a link to the manual page.