Charging System Description - Overview
Overview
The PCM gathers vehicle operating system data and determines the required charging rate. Based on that data, the PCM commands the alternator to provide a specific charging rate (voltage) between 12.0 and 14.8 volts, in 0.1 volt increments. In some operating conditions, the alternator may bypass PCM control and use a default value.

Depending on the vehicle condition, the variable control is not activated.

When the alternator is at fault, one or more of the following DTC is stored. Refer to the corresponding troubleshooting.

DTC
Detection Item
P0562
Charging System Low Voltage
P065A
ACG No Charging Malfunction
P1549
Charging System High Voltage
P16BB
Alternator B Terminal Circuit Low Voltage
P16E2
PGM-FI-ACG LIN Communication Error
P16E4
ACG High-temperature