TCM ADAPTATION - NAG1 ONLY (MOPAR)
The adaptation procedure requires the use of the appropriate scan tool. This program allows the electronic transmission system to re-calibrate itself. This will provide the proper baseline transmission operation. The adaptation procedure should be performed if any of the following procedures are performed:
- Transmission Assembly Replacement
- Transmission Control Module Replacement
- Clutch Plate and/or Seal Replacement
- Electrohydraulic Unit Replacement or Recondition
| 1. | With the scan tool, reset the Transmission adaptives. Resetting the adaptives will set the adaptives to factory settings. |
| NOTE: | Perform the Coast Down Adaptations first. The Transmission Temperature must be greater than 60°C (140°F) and less than 70°C (158°F). Failure to stay within these temperature ranges will void the procedure. |
| 2. | Drive the vehicle until the transmission temperature is in the specified range. |
| 3. | Perform 4 to 5 coast downs from 5th to 4th gear and then 4th to 3rd gear. |
| NOTE: | For Upshift adaptation, the Transmission temperature must be greater than 60°C (140°F) and less than 100°C (212°F). Failure to stay within these temperature ranges will void this procedure. |
| 4. | From a stop, moderately accelerate the vehicle and obtain all forward gear ranges while keeping the Engine RPM below 1800 RPM. Repeat this procedure 4 to 5 times. |
| 5. | Obtaining 5th gear may be difficult at 1800 RPM. Allow the transmission to shift into 5th gear at a higher RPM then lower the RPM to 1800 and perform manual shifts between 4th and 5th gears using the shift lever. |
| 6. | The TCM will store the adaptives every 10 minutes. After completion of the adaptation procedure make sure the vehicle stays running for at least 10 minutes. |
| 7. | It is possible to manually store the adaptives under the 10 minute time frame using the scan tool Store Adaptives procedure. |