Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2012 Mazda CX-7 FWD L4-2.3L TurboFACTORY OEM SERVICE PROCEDURE
Control Module: Service and Repair
TCM REMOVAL/INSTALLATION [AW6A-EL, AW6AX-EL]
CAUTION:
- Water or foreign material entering the connector can cause a poor connection or corrosion. Be sure not to allow water or foreign material on the connector when disconnecting.
1. Disconnect the negative battery cable.
2. Remove the air cleaner component. Service and Repair
3. Disconnect the TCM connector.
4. Remove the clip and disconnect the selector cable.
CAUTION:
- Do not use an impact wrench. Hold the manual shaft lever when removing the manual shaft nut, or the transaxle may be damaged.
5. Set the adjustable wrench as shown in the figure to hold the manual shaft lever.
6. Remove the manual shaft nut and washer.
7. Remove the TCM.
CAUTION:
- Do not touch the terminals.
8. Inspect the condition of the connector pin of the coupler component (foreign material, bent pins, broken pins) and O-ring after the TCM is removed.
9. Align the transaxle case and coupler component connector.
10. Be sure to match the position of the TCM marking.
CAUTION:
- Do not turn more than 60° from the marking.
11. Install the TCM.
12. Verify the correct positioning of the TCM and coupler component.
13. Tighten the TCM mounting bolts.
Tightening torque
- 19.6-29.4 Nm {2.0-2.9 kgf-m, 14.5-21.6 ft-lbf}
CAUTION:
- Do not use an impact wrench. Hold the manual shaft lever when removing the manual shaft nut, or the transaxle may be damaged.
14. Install the manual shaft lever and the washer.
15. Set the adjustable wrench as shown in the figure to hold the manual shaft lever, and tighten the manual shaft nut.
Tightening torque
- 9.8-14.7 Nm {100-142 kgf-cm, 87-123 in-lbf}
16. Install the clip to the selector cable as shown in the figure.
17. Shift the selector lever to P position.
18. Turn the manual shaft lever to P position.
19. Connect the selector cable and install the clip.
20. Connect the TCM connector.
21. Install the air cleaner component. Service and Repair
22. Connect the negative battery cable.
WARNING:
- If you replace the ATX or TCM, be sure to initialize the learned values and perform neutral position learning.
23. Perform the neutral position learning. Programming and Relearning
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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