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Home >> Acura >> 2012 >> ZDX V6-3.7L >> Repair and Diagnosis >> Body and Frame >> Locks >> Keyless Entry >> Testing and Inspection >> Component Tests and General Diagnostics >> Keyless/Power Door Locks/Security System (Drivers and Passengers MICU, Door Multiplex Control Unit, and Front Passengers Power

Keyless/Power Door Locks/Security System (Drivers and Passengers MICU, Door Multiplex Control Unit, and Front Passengers Power




Keyless/Power Door Locks/Security System (Driver's and Passenger's MICU, Door Multiplex Control Unit, and Front Passenger's Power Window Switch) Input Test

NOTE: Before testing, troubleshoot the multiplex integrated control system first, using B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A, and make sure the lighting system works properly.

Driver's MICU

1. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

2. Remove the driver's dashboard undercover Driver's Dashboard Undercover Removal / Installation.

3. Disconnect driver's under-dash fuse/relay box connectors D, F, G, N, P, Q, and R.

NOTE: All connector views are wire side of female terminals.





4. 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 5.

5. 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 6.

NOTE: Before testing, make sure the No. 25 (15 A) fuse in the driver's under-dash fuse/relay box is OK.






6. Reconnect the connectors to the driver's under-dash fuse/relay box, and do the following input tests:

7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

- 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.










Passenger's MICU

8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

9. Remove the passenger's kick panel Service and Repair.

10. Disconnect passenger's under-dash fuse/relay box connectors A, E, F, and H.

NOTE: All connector views are wire side of female terminals.





11. 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 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.

NOTE: Before testing, make sure the No. 10 (10 A) fuse in the passenger's under-dash fuse/relay box is OK.






13. Reconnect the connectors to the passenger's under-dash fuse/relay box, 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.






Door Multiplex Control Unit

14. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

15. Remove the driver's door panel Front Door Panel Removal / Installation.

16. Disconnect the 37P connector from the power window master switch.





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 all the terminals look OK, go to step 18.

18. Reconnect the driver's door harness to driver's door subharness.

19. With the connector 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 test proves OK, go to step 20.





20. Reconnect the 37P connector to the power window master switch, 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 21.






Front Passenger's Power Window Switch

21. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

22. Remove the front passenger's door panel Front Door Panel Removal / Installation.

23. Disconnect the 37P connector from the front passenger's power window switch.





24. 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 25.

25. With the connector 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 test proves OK, go to step 26.





26. Reconnect the front passenger's door harness to front passenger's door subharness.

27. Reconnect the 37P connector to the front passenger's power window switch, 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 28.





28. If multiple failures are found on more than one control unit, replace the driver's under-dash fuse/relay box (includes the driver's MICU) Drivers Under-Dash Fuse/Relay Box (Drivers MICU) Removal and Installation. If input failures are related to a particular control unit, replace the control unit.

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