08-242-26

Flash: Auxiliary Hybrid Control Processor Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):
• P2601-00 - Electric Coolant Pump Control Circuit Performance Stuck Off.
• U0623-00 - Lost Communication With Coolant Pump "A".
• P1DBA - Battery Cooling System Failure (Module, Hybrid Control Processor (HCP)). Customers may experience the following:
• **The vehicle is not performing a scheduled cabin preconditioning. 'Cabin Preconditioning Unavailable' message present in the Instrument Panel Cluster (IPC) when the scheduled cabin condition is not performed as planned.** This bulletin involves reprogramming the Auxiliary Hybrid Control Processor (AHCP) and Hybrid Control Processor (HCP) with the latest available software.