Normal Operation and Fault Conditions
With the engine running, the charging system supplies voltage to the battery and the electrical system through the high current BJB and battery B+ cable. The PCM monitors this voltage. If voltage drops 1.5 volts or more below the generator voltage desired, these DTCs can set after 30 seconds.
DTC FAULT TRIGGER CONDITIONS
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0562 | System Voltage Low | This DTC sets if the PCM detects voltage from the charging system that is 1.5 volts lower than the generator voltage desired. |
| P1397 | System Voltage Out of Self-Test Range | The PCM sets this DTC if the voltage rises above or drops below the calibrated setpoint. This DTC can also set if the vehicle has been recently jump started or has had a discharged battery. |