Can anyone tell me where the keyless entry module is in the 99 TL?
Every time I click my keyfob (which is brand new) it unlocks only the back doors but seems like it doesnt make enough power to unlock them completely. Front doors dont try to unlock at all.

 

99-01 keyless module is in the passenger multiplex unit. Which is attached to the passenger fuse box.

 

Bad door lock/unlock actuators ?

 

They could be I havent checked them. I saw somewhere else that these symptoms can mean a fried module, but I want to make sure and diagnose it correctly

 

Do front lock n unlock using switch at front lt n rt doors?

 

No they dont. I have to use the key from the outside.

 

<br/>Perform test A10-B11 & A10-A11 below... pic 2. If actuators work the passenger multiplex is defective.

 

I wasnt expecting this. Thank you very much im sure this will help

 

Test...

A10

B11

A11

 

Now is there any danger of me frying my PCM from this. I want to be extra careful.

 

Yeah when pigs fly. Lol

The only way for something like that to happen is for you to confuse the passenger multiplex with another electronic module. Meaning you unplug the wrong module and start testing on the wrong wire connector.

I would compare that to a doctor amputating the wrong arm. Does it happen? Yes. Will it happen? Mostly not.

If you don't understand you need to ask.

Plan B.

Don't test. Just replace the passenger mutiplex (PM). I'm 99% sure it's the PM.

There's a thread here just recently where someone had a ceiling lamp malfunction. He replaced the PM for like $10 or something from ebay I think.

Look for it in the 2g tl. Good info about the PM.

 

The only absolute certain way to prevent PCM damage is to disconnect the motors from the wire looms before doing any testing.

DO NOT apply a +12V test voltage to the motors while they are connected up to the PCM wiring, or the PCM MAY GET FRIED.

Once the motors are isolated, apply +12V and ground to each single one of them to see if it locks/unlocks, then switch polarity and see if it is does the opposite.

 

I understand perfectly but i heard stories about some people testing modules and frying PCMs. That has got me a little paranoid and I wanna make sure i dont do the same mistake.

 

Once you unplug the PM that servers the connections to the acutuators, door switches, and transmitter.

You are only testing the actuators... A10, B10, B11. There is nothing else on that circuit. How is it going to fry anything if there is noting else connected to it?

3rd diagram (driver actuator & pass actuators)

 

BTW I suggest you test the actuators to make sure they're not defective bc if one is defective that could fry the replacement PM.

 

FYI: The motors are not connected to the pcm. They are connected to the passenger multiplex, a totally different part.

 

I wish I would of saw this before. I somehow didnt see this post and I think I just fried the new one. Front door actuators are bad. At least there are plenty of 2g TL in my local junkyard.

 

It depends on how it's defective. If it's a short it may but if it's a continuity problem then no.

There's also an electronic module in the door too don't forget that. That controls mostly the operation of the windows.

 

Windows work fine. The doors will unlock but they wont lock with the button. Ill probably order some actuators from Acura and then make sure that the module didnt get fried.

 

You really should test the actuators by them self. That's the only way to be sure. Either at the door or through the MP as noted in post #8... "A11".

 

Ill go ahead and do that. Also is the keyless reciever unit part of the MP?

 

I don't think it's a reciever problem bc the other doors are responding.

Yes/no.

99-01 - yes MP

02 & 03 - no stand alone.

 

Yeah I know it has nothing to do with it but I was having trouble programming my fob. Just curious