Digital door lock module problems

[Kerichbe]

About a week ago I replaced the Oem door lock module with Houston digital module. The module was working fine, doors locked and unlocked without issue. Today I tried it and nothing, the module responds, and the LEDs blink, but nothing from the solenoids. Unfortunatly Houston does not supply documentation to interpret the error codes, is anyone familiar with the codes? The other thing I notice is the door lock telltale is no longer illuminated, is it possible that the inertia switch is the culprit, or would that have shut down the fuel pump as well?

[Christian Dietrich]

It's possible and you can try to disconnect the inertia switch and see if the power lock function works? I'm at work and I'm not near my schematic but I got the same as you do and I haven't had any defects and I'm trying to get ahold of them so I can get a diagnostic report for the door lock codes because I would like to have in case I have any issues. I also have the remote keyless entry system hooked into my car as well from them aswell. Try unplugging the module itself and plugging it back in to see if it resets.

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[Rich]

.... Houston does not supply documentation to interpret the error codes, is anyone familiar with the codes? The other thing I notice is the door lock telltale is no longer illuminated, is it possible that the inertia switch is the culprit, or would that have shut down the fuel pump as well?

I don't think their digital lock module generates error codes. The blinking LEDs are status indicators. One of them is lock or unlock and the other one is the opposite.

If the suggested hard reset does not work then call Houston.

[Michael]

I seem to remember Dave sending me a copy of the status light conditions. I don't think it actually blinks out codes but the red and green lights will illuminate to signal different problems such as to allow you to at least get to the correct door and somewhat narrow it down. I will see if I can find them and just post it.

[Christian Dietrich]

No the lights do flash error codes and i was told that by Mike at DMCMW. You can try hitting the Black reset button that's next to it

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[Kerichbe]

Greatly appreciate all the responses. I will try out the suggestions, and report back any findings. Nothing more frustrating than getting something to work, and then fail again. Thanks all!

[Tillsy]

I had this once a couple of years ago - it would blink various lights (mostly red from memory) but would not activate any of the door locks.

Nothing anyone or DMC advised worked - including cutting power to it.

So then I figured, virtually every electronic device these days will do a full reset if you hold down its/various buttons for 5-10 seconds.

So I held the button down on the digital controller and, after 5 or 10 seconds (can't remember which), it suddenly started cycling through a full diagnostic process. It spent about 30-60 seconds activating and deactivating the door locks multiple times in various combinations and the lights were illuminating in all sorts of various sequences, until eventually it finished doing whatever process it was doing.

It has been working perfectly ever since.

[iflights]

Michael's reply triggered my recollection about a similar document I received.

I see you've already resolved your issue, but I'm positing this here so we'll have easy access to the information in the future.

[Kerichbe]

Not being the most adept mechanically, I decided to replace the solenoids with actuators, thinking that they may have failed. Still no luck. I have also verified that the breaker was giving off 12v. I tried disconnecting the Inertia switch, once cleaned the contacts on the wiper switches. The one wiper switch looks pretty banged up, but I do believe it is making contact. When I throw the switches, the Lock module goes through the lock cycle, ending in a blinking red light, and then back off with a blinking red. I am wondering if I may have damaged the module somehow. Is there any owner in Michigan willing to take a look if I drive over too ? :-)

[Morpheus]

^^Thanks for posting that PDF!