Flash: 3.6L Powertrain Diagnostic and System Improvements
This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest
available software.
Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further
investigation the technician may find the following Diagnostic Trouble Codes (DTCs) set in
the PCM memory:
· **U1424-00 - Implausible Engine Torque Signal Received.**
· P0335 - Crankshaft Position Sensor Circuit.
· U0402 - Implausible Data Received From TCM - (Transmission Control Module).
· P0480 - Cooling Fan 1 Control Circuit/Open.
In addition, the following software enhancement is available:
· Elimination of (disable) Low idle 550 RPM to mitigate rough idle complaints (Base
idle fully warm maintained at 648 RPM).
