RxD

I have an issue with my newly acquired 2013 RX350.

The liftgate itself works fine but the little lock dimple button doesn't lock the doors so I have to use the fob or use the front door handles to lock it.

My question is:
Does anyone know the pin outs of the 3P connector on the back? It consists of a green wire, white black wire and a blue wire. When I short blue and white/black it is the same as me pressing the larger button that unlocks the door and opens the hatch. That works fine.

What doesn't work is the lock button. I will have the FOB on me or not fob and when I press the button nothing - I tried to check the continuity between the green and white/black wire and nothing at all. ZERO continuity. I tried to use a small jumper wire to jump the wires but I can't get the car to do anything either.

Before I go out to buy a new switch I want to be certain that the switch is bad but the only way to do so is to look at a circuit diagram to show which wire circuit is closed to trigger the lock all doors comman.

Thanks!

salimshah

Can you please verify couple of things:

Can you lock/unlock with the driver side [inside] button?
Are all doors closed shut [fully] and windows rolled up as you attempt to use the small lock button on the rear hatch?

You can get on to TIS for a small subscription fee to get the wiring diagram.

Salim

RxD

So after I posted my question that I went back to look at the car and thinking its only 3 wires that it isn't rocket science on how things are supposed to work. Looking at a few online electrical diagrams for more recent lexus models that it appears that white/black in the context of power locks is the "common" wire thus leaving the green as lock and the blue as unlock for the hatch. The switch was screwy and using a jumper wire didn't quite work until I managed to jump white/black with green and then I got a response from the car (long beep).

I knew at that point the switch wasn't making good continuity to get the lock to work right so I cracked out the plastic safe contact cleaner and went to town and tested things out and it works perfectly with a light gentle press now.

To think I was almost leaving the house to buy a $275CAD button...Toyota makes decent quality parts so i wasn't convinced that it had flat out failed.