Neither the key nor the remote fob opens the driver's door?

2003 HONDA CRV
291,000 MILES • 2.4L • 4 CYL • 4WD • AUTOMATIC
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JEFF HERMAN
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Peculiar issue with the driver's door lock. Neither the key nor the remote fob opens the driver's door. The key won't turn in the lock at all. The key will open the passenger door but the remote won't. The remote will only lock/unlock the doors from inside. Any ideas? I'm thinking the driver's door lock was changed. The fob flashes the lights like it's supposed to but doesn't do anything. Fob battery tests 3.25v. This vehicle requires you to hold the driver's outside door handle open in order to lock the door, presumably to avoid locking the keys in. All the linkage is connected and working. I'm suspecting that the fob isn't programmed to the locks or the antenna for the lock is faulty.
Jul 26, 2023 at 9:03 PM
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STRAILER
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It sounds like the lock actuator stopped working, here are the wiring diagrams so you can see how the system works and which wires to test for power. Also, there are three fuses that run the system I would check those as well. You might have a MCU going out FYI.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Here is how to change out the lock in case you need it, and the diagrams will show you which fuse to test. Check out the images (below). Please let us know what happens.



Jul 28, 2023 at 11:11 AM