2011 Ford Fiesta L4-1.6LFACTORY OEM SERVICE PROCEDURE

Control Module: Service and Repair




Transmission Control Module (TCM)

Factory service manual diagram




Factory service manual diagram




Removal

1. Using the scan tool, recover all module information before removing the Transmission Control Module (TCM). For additional information, refer to Transmission Adaptive Learning Transmission Adaptive Learning.

2. Remove the battery and battery tray. For additional information, refer to Battery, Mounting and Cables Battery And Battery Tray - Exploded View.

3. Remove the Air Cleaner (ACL) assembly and the outlet pipe. For additional information, refer to Intake Air Distribution and Filtering [1][2]Diagrams.

4. Using a suitable tool, detach the wiring harness from the battery tray bracket.

Factory service manual diagram




5. Remove the selector lever cable bracket bolt, the battery tray bracket nuts and the battery tray bracket.

Factory service manual diagram




6. Remove the wiring harness from the transaxle housing.

Factory service manual diagram




7. Detach the wiring harness clips from the Transmission Control Module (TCM) housing.

Factory service manual diagram




8. Disconnect the 2 TCM electrical connectors.

Factory service manual diagram




9. Remove the 4 TCM bolts.

Factory service manual diagram




10. Using a suitable flat blade screwdriver, carefully pry the TCM from the transaxle, at the location shown, and remove the TCM, discard the O-rings.

Factory service manual diagram




Installation

1. Carefully inspect the TCM and the transaxle bore for debris or damage. Clean and/or repair as needed.

2. NOTE: Use a small amount of transmission fluid on the new O-rings prior to installation.

Install new O-rings if the TCM is being reused.

Factory service manual diagram




3. NOTICE: Do not force the TCM onto the transaxle or damage may occur.

NOTICE: Make sure the TCM sits flush on the transaxle or damage can occur.

Install the TCM on the transaxle. Apply light pressure to seat the O-rings. If the TCM does not push in place with light pressure, remove the TCM and slightly turn the TCM gears and retry installing the TCM on the transaxle.

Factory service manual diagram




4. Install the 4 TCM bolts.
- Tighten to 27 Nm (20 lb-ft).

Factory service manual diagram




5. Connect the 2 TCM electrical connectors.

Factory service manual diagram




6. Install the wiring harness clips on the TCM housing.

Factory service manual diagram




7. Install the wiring harness on the transaxle housing.

Factory service manual diagram




8. Install the battery tray bracket, battery tray bracket nuts and selector lever cable bracket bolt.
- Tighten to 10 Nm (89 lb-in).

Factory service manual diagram




9. Install the wiring harness onto the battery tray bracket.

Factory service manual diagram




10. Install the ACL assembly and outlet pipe. For additional information, refer to Intake Air Distribution and Filtering [1][2]Diagrams.

11. Install the battery tray and battery. For additional information, refer to Battery, Mounting and Cables Battery And Battery Tray - Exploded View.

12. If a new TCM was installed, it will need to be reprogrammed to the latest calibration level available. For additional Information, refer to Transmission Adaptive Learning Transmission Adaptive Learning.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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