Door lock on driver side is broken?

KRSPACK

MEMBER
2003 HONDA ODYSSEY
135 MILES

Hi, I have a very specific problem with my 2003 Honda Odyssey. My driver side door lock no longer works with the remote, however the other doors do. It still manually locks and unlocks (depressing the tab). When you manually lock the door, the other doors lock as well (using the up/down tab). However, when you manually unlock the door, the others do not. I have replaced the passenger side multiplex unit which is often the culprit, but this did not solve the problem. In addition, I have checked the door actuator and found it to be fine. I bought a new door actuator and hooked it up. Same result. I put a volt meter on the connection to the door actuator and when using the door lock button, I get very low voltage to the connection. In addition, prior to depressing the door lock button, I am reading zero voltage at this connector.

Can you help out?

Thanks,

Kevin

3 Replies

JACOBANDNICKOLAS

MECHANIC
108,179 POSTS

Check the wiring between the door and the door frame for damage. It sounds like voltage is lost before the switch.

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Sunday, November 13th, 2011 AT 7:10 PM

DOREEN WRIGHT

MEMBER
2 POSTS

My 2003 odyssey wont even let me put my key in the lock on both driver and passenger side. I have to unlock from back tail gate. I just figure its the latest in the long list of freaky things this 2003 is doing. Sliding doors wont close, they just roll back and forth until you force them shut. Things stop working, start again and stop again.

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Tuesday, October 11th, 2016 AT 2:07 PM

KEN L

MASTER CERTIFIED MECHANIC
42,895 POSTS

Given the troubleshooting steps you've already taken and the specific behavior you're experiencing with the driver's side door lock on your 2003 Honda Odyssey, it seems you're dealing with a complex and specific electrical issue. Here are a few more things you can consider checking:

Wiring and Connectors: While you've checked the actuator itself, make sure to thoroughly inspect the wiring harness and connectors associated with the door lock system. Look for damaged wires, corroded connections, or loose connectors that could be causing an intermittent electrical connection.

Door Lock Switch: The door lock switch itself might be faulty. Even if you can manually lock and unlock the door, the electronic switch portion could be malfunctioning.

Central Locking System Control Module: The central locking control module is responsible for managing the locking and unlocking functions of the doors. If it's not sending the proper signals to the driver's side door, it could cause the issue you're facing.

Body Control Module (BCM): The BCM is the electronic control center for various vehicle functions, including door locks. If it's not sending the correct signals to the door lock system, it could result in the behavior you're observing.

Short or Open Circuit: It's possible that there's a short or open circuit somewhere in the wiring that's causing inconsistent voltage delivery to the driver's side door.

Ground Connections: Verify that the ground connections related to the driver's side door are clean and secure. Poor ground connections can lead to electrical issues.

Diagnostic Tools: If you have access to a diagnostic scanner that can communicate with your vehicle's control modules, it might provide more insight into the specific signals and data being sent and received by the door lock system.

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Friday, August 11th, 2023 AT 4:50 PM