Flash: Hybrid Control Processor (HCP) Updates
This bulletin involves updating the HCP with the latest available software.
Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more ofthe following DTCs have been set: U0402-00 - Implausible Data Received From TCM. P1C64 - Hybrid Perf - Engine Speed Below Target During Autostart. In addition, the following software enhancement is available: Engine Stop/Start (ESS) improvements - Improvements to make ESS more smooth/consistent. Customers may complain of rough or inconsistentautostarts. The customer may also describe one or more of the following: Coast down engine idle improvements (related to two-foot driving below 19kph (12 mph). During an ESS event, the autostart fails and the AutoPark engages. Transmission is in Limp Mode.
