Normal Operation
WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
With the engine running, the charging system supplies voltage to the battery and the vehicle electrical system through the battery B+ cable. The voltage that is supplied to the vehicle electrical system is used for the operation of the vehicle and the various modules. Many modules monitor this voltage and if it drops below a calibrated set point, a DTC will be set.
- DTC P0562 System Voltage Low - Each module within the vehicle system monitors input voltage to the module. If the voltage drops below the modules calibrated set point (which varies between modules), that module sets this DTC.
- DTC B1318 Battery Voltage Low - Each module within the vehicle system monitors input voltage to the module. If the voltage drops below the modules calibrated set point (which varies between modules), that module sets this DTC.
- DTC B1676 Battery Pack Voltage Out of Range - Each module within the vehicle system monitors input voltage to the module. If the voltage rises above or drops below the modules calibrated set point that module sets this DTC. This DTC may also be set if the vehicle has been recently jump started or has had a discharged battery.
This pinpoint test is intended to diagnose the following:
- Circuit high resistance
- Engine, generator and battery grounds
- Positive battery cable
- Battery
- High ignition-off current drain(s)
- Generator clutch (If equipped)
- Generator