The minimum battery voltage for Correct development of the electrical system is 12.5 volts, with the ignition switch in the off position. Whether the battery voltage is below this, charge the battery before very testing to eliminate faulty results.2.
A impotent or bad charging manner can by-product in reduced engine performance and electrical process faults. It may too damage the battery and/or catalytic converter. Testing is fit within the criterion residence mechanic's command, and requires basic tools to gross.
Instructions
1. Investigation the battery voltage by attaching the leads from the digital volt/ohm metre to the battery terminals.
Diagnose a Defective AlternatorThe charging course of your machine or flashing Motor lorry consists of the battery, the alternator, and the associated wiring. Correct diagnosis of the alternator includes the testing and inspection of the filled charging manner.Test for battery voltage at the large power wire on the back of the alternator. Battery voltage must be present here to turn the field coils on in the alternator. If voltage is not present, check fuses and wiring for open circuits.
3. Start the engine and test voltage at the battery with the engine running. It should be 13.5 volts to 14 volts if the alternator is functioning properly. Turn the headlights onto high beam, and the heater blower speed to high. The voltage should be stable, or rise slightly, to meet the added demand of the electrical accessories.
