Attachment III - Technical Information

MODULE RECALIBRATION

NOTE!

The affected flexible fuel vehicles (FFVS) may exhibit a hard-to-start condition. The normal recalibration procedure has been modified specifically for this program. All steps of this procedure must be completed to make sure the vehicle is operating properly before returning it to the owner.

1. Verify that the scan tool (Vehicle Communication Module [VCM] with Integrated Diagnostic System [IDS], Portable Diagnostic Software [PDS] or equivalent) is updated to software version B46.6 or later.

2. Connect the scan tool to the vehicle. Start and run the engine while monitoring the engine coolant temperature (ECT) PID. Shutoff the engine once the ECT reaches 38° C (100° F) or higher.

3. Recalibrate the PCM to the latest level using the VCM and either the IDS or the PDS.

^ If the calibration process was successful, proceed to Authorized Modifications Label Installation instructions in this Attachment III.

^ If unable to calibrate the PCM:

- module replacement will not be covered under this program, and

- prior to disconnecting the scan tool and closing the session, call the Special Service Support Center for further instructions.

4. Start the engine and allow it to come to full operating temperature. Then, let the engine idle for at least 10 minutes to allow the PCM to relearn its' adaptive strategies.

NOTE:
If ethanol is present in the fuel, you may experience long crank times and rough idle during the first start/run cycle after recalibration. This condition will correct itself after the engine has run approximately 10 minutes after being brought to full operating temperature.

AUTHORIZED MODIFICATIONS LABEL INSTALLATION





1. Obtain and prepare the Authorized Modifications Label Describe the modification performed, and enter your P&A Code, date of repair and the program type and program number. See Figure 1.