Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) Updates
This bulletin involves reprogramming the HCP and AHCP or also known as Power InverterModule (PIM) with the latest available software.
Technicians and/or customers may report the vehicle will not pass a state smog check due to permanent fault codes which will not clear.As a result, the vehicles are not eligible to be registered in certain states. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technicianmay find one or more of the following DTCs have been set: P0A33 - Drive Motor B Temperature Sensor 1 Circuit High. P0A2D - Sensor Power Supply 1 Circuit High. P215B - Vehicle Speed Output Shaft Speed Correlation. P0C4A - Drive Motor A Inverter Over Temperature. P0E15 - Hybrid-Ev Battery Pack Coolant Heater A Control Performance. P1AFE - MCPB Improper Shut Down. P1AF8 - MCPA Control Module Shutdown Performance. P0513 - Invalid Skim Key. U151A-87 - Hybrid Control Processor Secret Code-Missing Message. Customers may also experience more or more of the following: The scheduled charging does not occur on desired schedule. Vehicle does not start when pushing ignition switch with no MIL for DTCs P1AFE and P1AF8 (pending DTCs). Vehicle does not start when pushing ignition switch with DTCs P0513 and U151-A87 (stored or active). Scheduled charging start/end does not align with displayed time (ex: 12:05 pm end time on radio, but charging ends at 12:06 pm). Scheduled charging does not start following a power outage. Scheduled Cabin Conditioning (SCC) feature will not function properly if they schedule the departure time in between 50 minutes to 480 minutesat extreme cold ambient temps below -24 °C (-11 °F). ?Charge Now? soft button does not always work. The vehicle will get a rough engine spin-down, and then ?Service Charging System? warning and shutdown if the vehicle is quicklyre-cranked after the initial key crank.
