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 Acura ZDX V6-3.7LFACTORY OEM SERVICE PROCEDURE
Transmission Position Sensor/Switch: Service and Repair
Transmission Range Switch Replacement
1. Do the battery removal procedure Removal and Replacement.
2. Remove the air cleaner Service and Repair.
3. Remove the intake air duct.
4. Remove the battery heat shield.
5. Remove the auxiliary under-hood fuse/relay box.
6. Remove the battery base.
7. Remove the spring clip (A) and the control pin (B), then separate the shift cable end (C) from the control lever (D).
8. Check the bushing (E) in the shift cable end for a proper fit and wear. If the bushing is loose or worn, replace the shift cable Service and Repair.
9. Disconnect the transmission range switch connector.
10. Remove the nuts (A) securing the shift cable bracket (B).
11. Remove the transmission range switch.
12. Turn the control lever fully counterclockwise to the P position. Turn the control lever back two click-stopped positions so that the selector control shaft is in the N position.
13. Set a new transmission range switch (A) to the N position. Align the cutouts (B) on the rotary-frame with the neutral positioning cutouts (C) on the transmission range switch, then put a 2.0 mm (0.079 in) feeler gauge blade (D) in the cutouts to hold the transmission range switch in the N position.
NOTE: Be sure to use a 2.0 mm (0.079 in) feeler gauge blade or equivalent to hold the transmission range switch in the N position.
14. Install the transmission range switch (A) gently on the selector control shaft (B) while holding it in the N position with the 2.0 mm (0.079 in) blade (C).
15. Tighten the bolts on the transmission range switch while you continue to hold the N position. Do not move the transmission range switch when tightening the bolts. Then remove the feeler gauge.
16. Check the connectors for corrosion, dirt, or oil, and clean or repair if necessary, then connect the connector securely.
17. Install the shift cable bracket (A).
18. Apply molybdenum grease to the hole in the bushing (A) in the shift cable end (B).
19. Attach the shift cable end to the control lever (C), then insert the control pin (D) into the control lever hole through the shift cable end, and secure the control pin with the spring clip (E).
20. Install the battery base.
21. Install the auxiliary under-hood fuse/relay box.
22. Install the battery heat shield.
23. Install the intake air duct.
24. Install the air cleaner Service and Repair.
25. Do the battery installation procedure Removal and Replacement.
26. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode. Move the shift lever through all positions, and verify the transmission range switch matches with the A/T gear position indicator.
27. Check that the engine starts in P and N, and does not start in any other shift lever position.
28. Check that the back-up lights come on when the shift lever is in R.
29. Raise the vehicle on a lift, make sure it is securely supported, and allow all four wheels to rotate freely. Then start the engine, and check the shift lever operation.
Factory Service Tools
Use the Manual With the Right Hardware
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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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