A) Circuit/System Verification
Note: Do not have a battery charger connected during the generator testing
• Ignition ON
• Verify no, G13 Generator or B18 Battery Current Sensor DTCs are set that would cause a charging system concern. If DTCs are set resolve them first
Verify the scan tool Body Control Module Battery Voltage parameter is 12 V or greater inspect battery
• Engine running, all accessories OFF. Raise and support the vehicle
• Verify the Scan tool Body Control Module. Battery Voltage parameter continually increases when controlling the Body Control Module Generator Regulator Setpoint from 10% to 80% with a scan tool. It may take up to 10 secs for the battery voltage to stabilize between each setpoint change