96 Ranger Passenger Window Switch issue

[crsorre1987]

I have a 96 ranger xlt

Both power windows work from the master switch

Passenger window does not operate from its own switch.

I have replaced the switch w/ same result.

I have confirmed that power is making it to the passenger switch connector pad by multimeter.

Running out of ideas, any help?

 

[RonD]

The passenger widow is grounded at the master by two wires

So on passenger switch unplug the connector, test the light blue/black wire for 12v, which you said you did and it's OK
Now test the 2 ground wires
white/yellow and tan/blue

So key on
Light blue/black(12v) to white/yellow(gnd) should show 12v
And
Light blue/black to tan/blue should show 12v

What might be happening is that the Master is not passing the Ground to the passenger side switch when its in its "neutral" position, but is grounding when in the UP or DOWN position, so its the master switch that is the issue even though it works

1995 diagram below, will be same as 1996

 

[crsorre1987]

Tested this morning and:

With the key on I have 11.90 when testing blue/black to white/yellow and blue/black to tan/blue on the passenger side.

p.s. not sure if its relevant at all, but if the passenger switch isn't plugged in the master switch cannot operate the passenger window

p.s.s.

I also tested both of my passenger side window switches:

If I test for continuity between the left-side top and bottom poles I get 0.03 until I press up on the switch and then it goes to 0L
If I test for continuity between the right-side top and bottom poles I get 0.03 until I press down on the switch and then it goes to 0L

 

[RonD]

Test your battery voltage, you may not have an AMPs needed with that voltage reading

Key on engine off
Battery should read 12.3 to 12.8volts

Blue/black wire should read exactly the same as battery voltage
Not 11.9v

Power windows are pretty easy to diagnose
They use a 12volt DC motor
Motor has 2 wires
When 1 wire is 12v and the other wire a Ground then motor turns clockwise and window goes up
If you reverse the 12v and ground on the 2 motor wires then it turns counter clockwise and window goes down

So on any power window setup the switch in Neutral has BOTH wires grounded
When you move the switch ONE WIRE is disconnected from ground and given 12volts, so motor turns
Move switch the other way and the OTHER WIRE is ungrounded and gets 12v so motor turns the other way
Very straight forward

The master controls the 2 grounds on passenger side switch
So same thing happens, when master is moved ONE WIRE is disconnected from ground and given 12volts so motor turns

The passenger side needs its own 12volts for this master/slave thing to work, and 11.9v seems pretty low in a static test
These Motors can draw 5-7amps, which is alot
If blue/black wire is corroded or damaged it may have some voltage but can not pass enough amps
Lower voltage than "battery voltage" is a sign of that
You can try an active test
Plug connector into passenger switch
Put volt meter on blue/black and ground meter, should see that 11.9v, then press switch, if it "drops like a rock" to under 8v then wire or it connection is damaged

Master works because if has full 12v amps on its wire and sends that over to passenger side motor when its used

 

[crsorre1987]

KK final update:

I tested the blue/black 12v grounded against the passenger kick panel ground and had 11.93 which did not drop at all when the switch was pushed either direction.

Still grounded to the kick panel I tested the window motor plugs, with the switch up I got .03 in one direction and on the other plug I got .19 in the other direction.

Given all the evidence was pointed to me having another dead switch I went out to the pullyard and grabbed a third one for 5$ and it worked the moment I plugged it in.

Thank you for all your help.

 

[RonD]

Good work

Thanks for the update

Long odds on two bad switches in a row, so you should be almost out of bad luck...........get a Lotto ticket soon