1. Initial Troubleshooting (Before Dismantling):
* Inner Handle: Is the *inner* door handle completely unresponsive? If it moves *slightly*, the problem might be inside the door, but if it's completely stiff, the issue could be further up the linkage. Try jiggling the inner handle while gently pulling on the exterior handle – you might be able to free up a stuck linkage.
* Child Safety Locks: Ensure the child safety locks aren't engaged. This is a simple but often overlooked problem.
* Rods and linkages: If you can access any of the linkage rods connecting the inner handle to the latch mechanism (usually involves removing interior door panels), inspect them for damage or binding. Sometimes they can become bent or disconnected.
* Power Locks (If Equipped): If your Accord has power locks, check the fuse and/or relay for the door lock system. A faulty system could be jamming the mechanism.
2. Accessing the Door Latch:
This is the most challenging part. You'll need to remove the interior door panel. This process usually involves:
* Removing the door panel: This varies slightly depending on the trim level. Usually, you need to remove screws along the edges and carefully pry the panel away from the door, working your way around. Be mindful of the electrical connectors for the power window, power lock, and speakers. Disconnect these gently.
* Gaining access to the latch mechanism: Once the panel is removed, you'll see the linkage and the latch mechanism itself. It will likely be held in place by screws or bolts that are now visible. You may need to further remove trim pieces to get better access. Pictures or a repair manual specific to your year and model of Accord will be extremely helpful here. (See the note about manuals below.)
3. Replacing the Latch:
* Removing the old latch: After carefully removing the retaining screws/bolts, you should be able to detach the old latch. Note the position of any components before removing them.
* Installing the new latch: Carefully install the new latch, ensuring that all the linkages and components are properly reconnected. This is a reverse process of disassembly.
* Reassembling the door panel: Reconnect the electrical connectors and carefully refit the door panel, securing it with the screws.
4. Important Notes:
* Repair Manual: A repair manual specific to your 1989 Honda Accord is incredibly valuable. It will provide detailed diagrams and instructions on removing the door panel and replacing the latch. You can often find these manuals online (eBay, Amazon) or at auto parts stores.
* Patience: This is a somewhat involved process. Be patient, take your time, and work methodically.
* Photography: Take photos during disassembly. This is essential to help you remember how things go back together.
* Tools: You'll need a variety of tools – screwdrivers (Phillips and flathead), possibly a trim removal tool, and possibly sockets and wrenches for the latch mechanism itself.
If you're not comfortable working on your car yourself, take it to a mechanic. Replacing the door latch is not a beginner's repair, and improper assembly can lead to further damage.
