Circuit/System Description
WARNING: This page is about a different car, the 2013 GMC Yukon, 2013 Chevrolet Tahoe, and 2013 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic applies to internal microprocessor integrity conditions within the hybrid powertrain control module. The hybrid powertrain control module is internal to the drive motor generator power inverter module, and is not serviced separately. The hybrid powertrain control module monitors its ability to read and write to the memory. The hybrid powertrain control module processor stores identical data in two locations and compares the data to verify that the stored data is correct.