2000 Toyota Tundra Battery Light On But Alternator Is Charging

This is the same connector that lets the on-board computer know if the alternator is charging or not which is what the battery light actually means.

2000 toyota tundra battery light on but alternator is charging. Discussion Starter 14 Jun 24 2014. If the light is flickering in a very irregular pattern check the fuses belts all wires and connectors for corrosion and the dash bulb itself. 2 Make sure the regulator is being excited.

Next few are always leads to relay box alternator sense etc. Start truck use jumper cables or use scrap wire to connect alternator directly from alternator positive out to battery positive. I accept Dogecoin my address DAzkFdR6ZWVwturoVgLPbMUrkhEoqXdCVf TRY AMAZON PRIME 30 DAY FREE TRIAL httpsamznto3ojzphr http.

Toyota Tundra Bad Alternator Diagnosis. The alternators job in your Tundra is to provide electricity as it is running. This light illuminates whenever the charging system does not charge the battery with a voltage above approximately 135 volts.

The idea is that when you turn on the key voltage flows through the light to the S terminal on the alternator. The alternator cannot bring a very weak or dead battery back to life. New battery rebuilt alternator.

Check your voltages again with the engine stopped and then running. Mine went out at 150k I bought a used Toyota alt from a sequoia with 12k miles and have had no issues since. If it is running and the alternator is charging then a diode inside the alternator is the likely culprit.

Whenever the brushes on the inside of the alternator are starting to go or the voltage regulator is starting to fail the charge light will start flickeringflashing in a somewhat regular pattern. Engine will not idle and will not run below 2000RPM. Ya 75k is a little low for the alt to go out.