Why Does My Car Say Check Charging System. The BCM determines system voltage is less than 11 volts or greater than 16 volts. This is a unit that regulates the charging of the battery from the alternator.
Driving yesterday and the Check Charging System came on along with the battery light. When you start it you hopefully have oil pressure and it goes out. The error message you see Service Charging Sys and the P DTC code you pulled mean that something is amiss with the alternator.
Much like testing your car battery a multimeter can be used to quickly tell whether your cars charging system is adequately keeping the car battery at the proper charge and operating the electrical system at the proper voltage as well.
The instrument panel cluster IPC illuminates the charge indicator and the BATTERY NOT CHARGING message is displayed in the message center when the following occurs. When diagnosing the causes of charging system failure in your car its essential that your automotive technician performs a thorough differential diagnosis. Your charging system is responsible for restoring the charge to your car battery after use and is tasked with providing power to your lights audio system and other electronics while your vehicle is running. Much like testing your car battery a multimeter can be used to quickly tell whether your cars charging system is adequately keeping the car battery at the proper charge and operating the electrical system at the proper voltage as well.
