[Frostbyte]

Hey there, browsed these forums a few times in search of stuff. Finally decided to create an account. I've had my 2003 Celica for over 12 years now and it's time to fix'er up. So I've been doing that little by little lately.

One thing I need help figuring out is why the middle lock switch only works for the trunk. - I have to lock and unlock the doors manually.

Not really a big issue, but if anyone knows a starting place for how to fix the switch so it works for the doors as well, I'd greatly appreciate it. ^_^

 

[Sheik Ya Bootie]

Bridge the wires on the switch, does your key fob work for lock unlock? Check the relay boxes for door relay,

 

[Frostbyte]

The key fob is somewhere in all my junk, 'cause the plastic loop broke and I didn't see any need in getting a new one at the time since it only worked on the trunk.

Short answer, key fob didn't work last I remember.

Sad to say, I'm not very mechanically inclined. But I'm trying. So I know nothing about the relay box. Now's the time to learn, I suppose! =D So thanks, I'll take a look at that when I get a chance.

 

[2way]

Does it, by chance, have an aftermarket alarm?

 

[Sheik Ya Bootie]

Ok so the switch doesn’t work and you if the key fob works.

I’d be thinking the master actuator is toast

Sometimes it’s just better to pay a sparky..

 

[PETER PAN 2009]

Switch on center console opens the trunk, so door relay works.

When you press the switch, do actuators inside doors make any noise or any motion?

If they do, the little motor inside the door actuator assembly are weak, need replacement. You can open the door inside panel, only 2 screws and a few plastic fasteners. Hook up a volt meter to the motor's terminals and press the switch to verify if the motor is actuated with 12V. If the motor does not turn strong enough to pull the cable, it needs replaced,

If no noise, no motion come from the doors, then the wiring to both doors may be damaged. An auto electric technician should be able to find the fault.

 

[Blue Angel]

I just had a similar problem and it turned out to be the Body Control Module computer ($1200) - ouch!

 

[PETER PAN 2009]

You can find an used BCM in eBay for about $100.

I just had a similar problem and it turned out to be the Body Control Module computer ($1200) - ouch!