Flash: 3.6L Diagnostic And System Improvements
This bulletin involves reprogramming the Powertrain Control Module (PCM) with new
software.
The following powertrain system improvements/enhancements are included in this
software release:
· **P0335 - Crankshaft Position Sensor Circuit.**
· P0480 Cooling Fan 1 Control Circuit/open.
· P0456 EVAP System Small Leak.
· U0402 Implausible Data Received From TCM.
· P0441 EVAP Purge System Performance.
· P0116 Engine Coolant Temperature Sensor Performance.
Other enhancements included in this update:
· **Elimination of (disable) Low idle 550 RPM to mitigate rough idle complaints (Base
idle fully warm maintained at 648 RPM).**
· New software to address customer?s concern of extended crank times when starting
engine.
· Software to enable the clearing of erroneous DTC U0140 Loss of communication
with the Body Control Module (BCM).
· New software to enable the ?Transmission Quick Learn? feature.
