Circuit/System Verification

NOTE:

Do not have a battery charger connected during the generator testing.

Ignition ON.
Verify that no G13 Generator or B18 Battery Current Sensor DTCs are set that would cause a charging system concern.
- If DTCs are set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- If no DTCs are set
Verify the scan tool Body Control Module Battery Voltage parameter is 12 V or greater.
- If less than 12 V
  Refer to Battery Inspection/Test .
- If 12 V or greater
Engine running, all accessories OFF.
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 s for the battery voltage to stabilize between each setpoint change.
- If the battery voltage does not continually increase
  Refer to Circuit/System Testing.
- If the battery voltage continually increases
All OK.