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
Keyless Access System (Keyless Access Control Unit, Keyless Access Remote Slot Control Unit, Keyless Access Power Control Unit
Keyless Access System (Keyless Access Control Unit, Keyless Access Remote Slot Control Unit, Keyless Access Power Control Unit, and Electric Steering Lock) Input Test
Keyless Access Control Unit
NOTE:
- Before doing the input tests, check the B-CAN DTCs. If any DTC is indicated, troubleshoot the indicated DTC first.
- If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.
1. Press the engine start/stop button to select the OFF mode.
2. Remove the audio-navigation and HVAC switch panel Audio-Navigation and HVAC Switch Panel Removal/Installation.
3. Remove the two bolts, then slide the keyless access control unit (A) off of the mounting bracket (B).
NOTE: All connector views are wire side of female terminals.
4. Disconnect the connectors (C) from the keyless access control unit.
5. Inspect the connector and socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to step 6.
6. With the connectors still disconnected, do the following input tests:
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to step 7.
7. Reconnect the connectors to the keyless access control unit, and do the following input tests:
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to step 8.
Power Control Unit
8. Press the engine start/stop button to select the OFF mode.
9. Remove the driver's dashboard undercover Driver's Dashboard Undercover Removal / Installation.
10. Disconnect the connectors (A) from the power control unit (B).
NOTE: All connector views are wire side of female terminals.
11. Inspect the connector and the socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to step 12.
12. With the connectors still disconnected, do the following input tests:
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to step 13.
13. Reconnect the connectors to the power control unit, and do the following input tests:
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to step 14.
Electric Steering Lock
NOTE: SRS components are located in this area. Review the SRS component locations Locations, and precautions and procedures Service and Repair before doing repairs or servicing.
14. Press the engine start/stop button to select the OFF mode.
15. Remove the column covers Service and Repair.
16. Disconnect the connector (A) from the electric steering lock (B).
17. Inspect the connector and socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to step 18.
18. Reconnect the connector to the electric steering lock, and do the following input tests:
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to step 19.
Remote Slot Control Unit
19. Press the engine start/stop button to select the OFF mode.
20. Remove the audio-navigation and HVAC switch panel Audio-Navigation and HVAC Switch Panel Removal/Installation.
21. Remove the two bolts, then slide the remote slot control unit (A) off of the mounting bracket (B).
22. Disconnect the connector (C) from the remote slot control unit.
23. Inspect the connector and the socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to step 24.
24. With the connector still disconnected, do these input tests at the following connector.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to step 25.
25. Reconnect the connector to the remote slot control unit, and do the following input tests:
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to step 26.
26. If multiple failures are found on more than one control unit, replace the keyless access control unit. If input failures are related to a particular control unit, replace the control unit.
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:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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