Generic
Type:
    Powertrain - Vehicle Speed, Idle Control, and Auxiliary Inputs - ISO/SAE Controlled
Description:
    System Voltage

GM
Type:
    Powertrain - Vehicle Speed, Idle Control, and Auxiliary Inputs - ISO/SAE Controlled
Description:
    System Voltage Fault Conditions
Cause:
    Engine speed over 650 rpm, then the PCM detected that the system voltage was less than 9v or more than 18v for 25 seconds.