2011 Mazda RX8 2RTR-1.3LFACTORY OEM SERVICE PROCEDURE

Transmission Position Sensor/Switch: Adjustments




TRANSMISSION RANGE (TR) SWITCH ADJUSTMENT [SJ6A-EL]

CAUTION:
- Water or foreign material entering the connector can cause poor connections or corrosion. Be sure that water or foreign material do not enter the connector when disconnecting it.

1. Remove the engine cover. Service and Repair

2. Remove the battery cover.

3. Disconnect the negative battery cable.

4. Remove the front tunnel member.

5. Remove the rear tunnel member.

6. Remove the catalytic converter. Service and Repair

7. Remove the insulator.

Factory service manual diagram





8. Mark the manual shaft lever component as shown in the figure.

Factory service manual diagram





9. Separate the manual shaft lever component from selector lever.

10. Disconnect the TR switch connector.

Factory service manual diagram





11. Rotate the manual shaft to the N position.

CAUTION:
- Do not use an impact wrench. Hold the manual shaft lever when removing the manual shaft nut, otherwise the transmission may be damaged.

12. Set the adjustable wrench as shown in the figure to hold the manual shaft lever.

Factory service manual diagram





13. Remove the manual shaft nut.

14. Remove the washer and manual shaft lever component.

Factory service manual diagram





15. Loosen the TR switch mounting bolts.

16. Temporarily install the TR switch mounting bolt.

CAUTION:
- Improper adjustment of the TR switch will cause abnormal operation of the automatic transmission. Be sure to adjust the TR switch correctly.

17. Verify the TR switch reference line and the notch of the manual shaft are aligned.

Factory service manual diagram





18. Tighten the TR switch mounting bolts.

Tightening torque
- 9.8-15.7 Nm {100-160 kgf-cm, 87-138 in-lbf}

19. Inspect for continuity between TR switch terminals E and H.

Factory service manual diagram





20. Install the manual shaft lever component and washer.

CAUTION:
- Do not use an impact wrench. Hold the manual shaft lever when tightening the manual shaft nut, otherwise the transmission may be damaged.

21. Set the adjustable wrench as shown in the figure to hold the manual shaft lever.

Factory service manual diagram





22. Tighten the manual shaft nut using a torque wrench.

Tightening torque
- 13.7-17.6 Nm {1.4-1.8 kgf-m, 11-13 ft-lbf}

23. Shift the selector lever to P position.

24. Turn the manual shaft lever to P position.

25. Inspect TR switch continuity. Testing and Inspection

26. Connect the TR switch connector.

27. Align the mark of the manual shaft lever component as shown in the figure.

Factory service manual diagram





28. Install the manual shaft lever component installation nut.

Tightening torque
- 10.8-14.7 Nm {1.1-1.4 kgf-m, 8.0-10.8 ft-lbf}

29. Install the insulator.

Tightening torque
- 8-11 Nm {82-112 kgf-cm, 72-97 in-lbf}

30. Install the catalytic converter. Service and Repair

31. Install the rear tunnel member.

32. Install the front tunnel member.

33. Connect the negative battery cable.

34. Install the battery cover.

35. Install the engine cover. Service and Repair

36. Inspect TR switch operation. Testing and Inspection

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

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.