I've seen a lot of people posting about power lock issues and I cant seem to find an answer. I have trouble shot it some and can say the module is good (I tried another one and the car had the same problem). You can hear the module clicking when you hit lock or unlock. there are I think 6 wires at the lock motor and 2 are ground, the other 4 don't do anything when you lock or unlock, no power and no ground. there is also a black and red wire coming from the module going to the driver outside door handle and one of those wires switches with the switch but the other wire does nothing. please advise if you know of a common problem.

Side note I use to have an integra coupe and the power locks on it worked when they wanted too. and same thing, you could hear the module click but the locks would do nothing. I'll bet it had/has the same problem.

 

There are five (5) leads at the drivers door lock actuator, [motor] and two (2) at all the others.

The black is a ground input for the switch in the actuator, the blue/red and blue/white are outputs, [one when locked the other when unlocked] from the switch, [to Power Door Lock Control Unit for central locking].

The last two (2) leads, [white/red and yellow/red] are fo4r the actuator itself, the other actuators will have only the white/red and yellow/red leads.

The white/red and yellow/red leads to all actuators ar parallel from the PDLCU.

The power door lock system on our cars are "Polarity Reversing Ground At Rest" meaning both the leads, [white/red and yellow/red] going to the actuators are grounds when the system is at rest, [not being locked or unlocked], the ground is "lifted", [removed] from one of the leads and 12V+ is supplied so motor runs in one direction, lifting the ground and suppling power to the other lead runs the motor in the other direction.

To test a polarity reversing sytem, is simple, all you need is a 12V test light, start by testing for a ground on the white/red and yellow/red leads, [unplug an actuator and test at actuator plug] if both leads show a ground, connect the test light ground clip to one of the leads, and the test light probe to the other lead. [white/red and yellow/red] it makes no diff. which way you connect.

Now rock the door lock switch for both lock and unlock, the test light should light up for both lock and unlock, if it does, the actuator is the problem, if not the PDLCU is the problem, or wiring is the problem, do the same tests at the PDLCU at the white/red and yellow/red leads to determine if it is the unit or the wiring.

The other leads to the PDLCU are....
White/green 12V+, [hot at all times].
Light blue and light green, from front pass. door lock cylinder switch
Black/white and black/red, from front pass. door lock switch.
Green/white and green/red, from drivers door lock switch.
Black, chassis ground.

All the switchs above supply a ground to the PDLCU when switched to lock or unlock, [first color is lock], they can be tested for for a ground by rocking the switch or turning a key in the lock cylinder. 94

 

very good info sir but I found the problem. It was the module, I tested it with a bad one. I got a 3rd module and poof, locks work.

thanks for the reply