Attachment III - Technical Information

OVERVIEW

Before delivering any of the vehicles involved in this program, dealers are to read Diagnostic Trouble Codes (DTCs) and reprogram the Powertrain Control Module (PCM), Nitrogen Oxide (NOx) Sensor Module, and Transmission Control Module (TCM) (if applicable). For vehicles that have NOx related DTCs, dealers are also to replace the NOx Sensor.

SERVICE PROCEDURE

1. Verify that the IDS is updated to version 76.01 or higher.

2. Using IDS check the PCM for the following NOx related DTCs:

P207F, P2OEE, P2200, P2201, P2209, P164A, P2A00 and/or P0133.

- If NOx related DTCs are present, replace the NOx Sensor.

Refer to Workshop Manual (WSM), Section 303-14B for NOx sensor replacement, then proceed to "Module Reprogramming".

- If NOx related DTCs are not present, proceed to "Module Reprogramming".

Module Reprogramming Important Information For Module Programming

NOTE:
When programming or reprogramming a module, use the following basic checks to ensure programming completes without errors.

^ Make sure the battery is fully charged before carrying out the programming steps and connect IDS/scan tool to a power source.

^ Inspect Vehicle Communication Module (VCM) and cables for any damage. Make sure scan tool connections are not interrupted during programming.

^ A hardwired internet connection is strongly recommended.

^ Turn off all unnecessary accessories (radio, heated/cooled seats, headlamps, interior lamps, HVAC system, etc.), close doors.

^ Disconnect/depower any aftermarket accessories (remote start, alarm, power inverter, CB radio, etc.).

^ Follow all scan tool on-screen instructions carefully.

^ Disable IDS/scan tool sleep mode, screensaver, hibernation modes.

^ Create all sessions Key On Engine Off (KOEO). Starting the vehicle before creating a session will cause errors within the programming inhale process.

NOTE:
Reprogram appropriate vehicle modules before performing diagnostics and clear all DTCs after programming. For DTCs generated after reprogramming, follow normal diagnostic service procedures.

1. Reprogram the PCM, 1CM (if applicable), and NOx Sensor Module to the latest calibration using IDS release 76.01 or higher. When reprogramming the PCM, the NOx Module will be automatically reprogrammed to the latest level. Calibration files may be obtained at the website.

2. If the NOx sensor was replaced, reset/clear the NOx sensor adaptive learn tables. This will prevent false NOx codes from being set. Resetting/clearing of the adaptive learn tables can be accomplished with IDS. To reset/clear the NOx adaptive learn tables:

a. From the IDS main menu, click the "Toolbox" icon.

b. Select "Powertrain."

c. Select "Service Functions."

d. Select "Reset/Clear Specified Function" and select "Yes" when prompted.

e. Select "Nitrogen Oxide."

NOTE:
For vehicles equipped with an automatic transmission, Advise the customer that this vehicle is equipped with an adaptive transmission shift strategy which allows the vehicle's computer to learn the transmission's unique parameters and improve shift quality. When the adaptive strategy is reset, the computer will begin a re-learning process. This re-learning process may result in firmer than normal upshifts and downshifts for several days.

Recovering a PCM/Body Control Module (BCM) when programming has resulted in a blank module:

NEVER DELETE THE ORIGINAL SESSION!

1. Obtain the original IDS that was used when the programming error occurred during Module Reprogramming (MR) or Programmable Module Installation (PMI).

2. Disconnect the VCM from the data link connector (DLC) and the IDS.

3. Reconnect the VCM to IDS and then connect to the DLC. Once reconnected, the VCM icon should appear in the corner of the IDS screen. If it does not, troubleshoot the IDS to VCM connection.

4. Locate the ORIGINAL vehicle session when programming failed. This should be the last session used in most cases. If not, use the session created on the date that the programming failed.

NOTE:
If the original session is not listed in the previous session list, click the "Recycle bin" icon at the lower right of the previous session screen. This will load any deleted sessions and allow you to look through them. Double-click the session to restore it.

5. Once the session is loaded, the failed process should resume automatically.

6. If programming does not resume automatically, proceed to the Module Programming menu and select the previously attempted process, Programmable Module Installation (PM I) or Module Reprogramming.

7. Follow all on-screen prompts/instructions.

8. Near the end of programming, the IDS will prompt you to select certain parameters. It is important to make a selection for ALL parameters listed. If the correct selection is already highlighted, you must still choose that selection before clicking the "Tick" mark to complete the configuration.

9. The last screen on the IDS may list additional steps required to complete the programming process. Make sure all applicable steps listed on the screen are followed in order.