21-028-21

Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Code (DTC). U0293-00 - Lost Communication With Hybrid Control Module. P0732-00 - Gear 2 Shift Incorrect Ratio. P061B-00 - Internal Control Module Torque Calculation Performance. Other software enhancement::2?1 downshift improvement. Additional module flashes are required for this update to be effective, the following modules are all to be updated along withthis PCM update:Hybrid Control Processor (HCP), Auxiliary Hybrid Control Processor (AHCP) also known as the Power Invertor Module (PIM). Powertrain Control Module (PCM). Battery Pack Control Module (BPCM). Integrated Dual Charging Module (IDCM).