Power locks not working

Hi,

What I am providing are wiring schematics for the door lock system. Not being there with you, I can't see what has been done. However, look through these pics and see if they help.

Now, I don't know if you have a regular cab or crew cab, so I will provide schematics for both. The first two are for a regular cab. Pics 3 and 4 are for a crew cab.

It really isn't a complex system. However, when someone cut things up, that can make it difficult. Here are a few links you may find helpful when testing:

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

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

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Let me know if this helps or if you have questions. If you have the chance, let me know what you find.

Take care,
Joe

Hi,

Power is distributed equally to each switch via a wire splice. As far as using a test light, absolutely it will work. I use one all the time with wiring issues.

Do me a favor. Let me know if this is a regular cab or crew cab. It will help me determine where you need to start checking for power with the light. Also, if you haven't already, remove the door panels and see if you have power to the actuators. Using your test light, check for power to the black wire with the white tracer. It should have 12v all the time. Also, behind the left kick panel there should be a solid black wire that is ground. Make sure that is clean, tight, and not corroded. We may have to modify the test light to check for continuity if that needs checked for the ground. I'll explain how to do it if needed. If possible, take a pic of the test light so I know what you have and upload it for me to see.

Let me know.
Joe

There is nothing wrong with the test light. It will work perfect.

As far as the one actuator working in one direction could mean it isn't getting power from the switch in the directions that doesn't work or the actuator is bad. The only way to be sure is to take your test light, and see if power is sent to the actuator when the switch is in the opposite direction. Now how this works is simple but may be confusing. All that happens when you select to lock or unlock the door is the polarity (12v) to the actuator changes direction. There are two wires to the actuator. One is pink/orange and the other pink/black.

When you check for power, when the switch is in the unlock position, the pink/black wire should have power. When it is in the lock position, the pink/orange wire should have power. If you have power to those wires I mentioned under those conditions (switch position), then chances are the switch is bad. As far as the driver's door where nothing works, you still could have power and no ground. That is the one that doesn't work at all. On the passenger side, it does work one way, so ground is okay.

Do this:
1) Starting with the passenger door (the one that works one direction), check for power as I mentioned above. Since the it will lock, the pink/orange wire should show power when pressing the switch to the lock position. Make sure there is power to the pink/black wire when you place the switch in the unlock position. If there is, replace the actuator. If there is no power to the pink/black, replace the switch.

2) The driver's door is a little different. Since it does nothing at all, we need to first check if power is available to the actuator the same way as passenger side. If there is power in both directions, then we need to confirm there is ground. If you have both power and ground, replace the actuator. If there is no power, we then have to go to the switch and confirm there is power to the black/white wire powering the switch. If there is not power, check where the break is. If there is power at the switch and not to the actuator, replace the switch.

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I just reread what I wrote and it sounds confusing. Ugh! I'm trying. If step 2 above is confusing, just check (using the test light) if there is power to the actuator and let me know. If will further direct you at that point.

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Please let me know if you understand what I wrote. Also, if you have questions, please let me know. In all honesty, it is a very simple circuit. I most likely am not making it sound that way.

Take care,
Joe

Hi,

The best place would be at the actuator. If possible, disconnect the wiring connector the actuator and pull it out to a position you can reach it. It doesn't need to be connected to the actuator to check for power.

As far as the test light, yes, Simply place the steel end on the wire. Just make sure you have a good ground on the other end of the test light (the wire end). If you don't have a good ground, there could be power to it but it won't light.

Take care and let me know what you find.

Joe

Okay,

Regarding the passenger door, it sounds like the switch is bad.

The driver's door has me confused. If you get power to both wires when pressing unlock, that sounds like the switch has shorted internally. If you get power in both wires, I would think you would hear something.

And yes, the black / white wire should have power at all times. That goes to the switch. From that point, the switch distributes the power to the actuator.

Here is what I suggest. If possible, see if you can get one switch (driver or passenger side), and see if it makes things work. You may be able to get one from a salvage yard for very cheap.

Or, disconnect the connector at the switch which runs to the actuator. Apply 12v to one wire at a time to see if the actuator responds. If it does, then we have a 99% chance it's the switch itself.

If you have a battery charger, you can use it to provide the power to the actuator by grounding one side of the charger to the vehicle and then applying power to the wiring. If you don't have a charger, you could run a long jumper wire between the battery + and one wire at a time to the actuator. Remember, based on which of the two wires you power should cause the opposite reaction from the actuator.

On the driver's door, since there is no noise at all from the actuator, confirm it is plugged in.

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Let me know if that makes sense. LOL

Take care,
Joe

Hi,

You are very welcome. I'm glad you got things working.

As far as the key-less system, I hate to ask this, but could you start a new thread with that topic. We are trying to keep each post specific to one topic so that it helps others. I hope you understand.

Regardless, good work on the locks. I told you that little test light would do the job!

Take care and feel free to come back anytime.

Joe

You are very welcome. Take good care of yourself. Hopefully, I will see your next post. LOL

Take care,
Joe