What does it mean when your truck says service battery charging system?
The alternator creates electrical power to run accessories and recharge the battery. If this warning lamp lights up while the engine is running, it means that there is a problem in the charging system, usually that the battery has gone bad or the alternator has stopped working.
What does it mean when your check charging system light comes on?
What’s happening when the battery/check charging system light comes on? Whenever this light goes on, it means that the vehicle is running solely on battery power. If the problem continues and your charging system fails, the battery won’t be able to recharge and it will soon run down, leaving you with a dead battery.
How does a Toyota battery charging system work?
Most Toyota charging systems integrate their voltage regulators into the alternator assembly. While charging voltage specifications vary according to application, the voltage regulator generally adjusts battery-charging voltage according to ambient air temperature.
What is the charger voltage on a Toyota Tundra?
Photo 4: This inductive ammeter, which is clamped on the alternator’s B+ output wire, indicates 33.57 amperes charging output. Toyota recommends that the alternator fuses be tested for both voltage and resistance. According to service data, the Tundra’s charging system is supplied by four fuses: the Alt-H fuse, Alt-S fuse, MET-fuse and LH-IG fuse.
What does diagnostic code mean on Toyota Charger?
Depending on the diagnostic capability of the scan tool and the software written into the engine control module (ECM), the scan tool might display diagnostic trouble codes (DTCs) indicating problems within the charging system.
What should I do if my Toyota charger is not charging?
Toyota recommends testing the alternator by first inspecting the alternator wiring. Always wiggle-test the voltage regulator connector at the alternator when testing for an intermittent charging condition. Toyota also recommends inspecting the condition of the drive belt.