Circuit/System Testing
WARNING: This page is about a different car, the 2013 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect K59 starter generator control module X2 connector.
- Ignition ON, test for 8-18V between the K59 starter generator control module X2 connector accessory voltage circuit terminal 8 and ground.
- If not within the specified range, test the accessory voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal replace the K59 starter generator control module.