CS6900 Not Activating Door Locks, 97 Jeep Grand Cherokee

I am installing a Compustar CS6900 in my 97 Jeep Grand Cherokee and am having trouble hooking up the keyless entry part of the system. I tested the alarm and it sends out a negative 12v pulse in both wires coming from the alarm brain. My driver side and passenger side door switches both work on the vehicle but the alarm isn't triggering them even though its sending power. I tested the leads going to the door actuator with my power probe and noticed that the wires are grounded out. If I send positive power to them the circuit on my power probe pops. Sending negative power obviously does nothing as they are already grounded out anyways. What I can't understand is why do my door switches still work and register 12v positive when I push the door lock/unlock buttons but as soon as I try to use my power probe or alarms keyless entry to trigger them it does nothing? I also checked the wires going from the switch to the actuator and there is no shorts anywhere. The wires on the drivers side that I am trying to tie into is the "orange/violet for lock" and "pink/black for unlock".

You have Type C door locks, not Type B, and you must go into each of the front doors.

POWER LOCK      ORANGE/VIOLET and PINK/BLACK (TYPE C) See NOTE *2      IN BOTH FRONT DOORS
POWER UNLOCK      PINK/BLACK (TYPE C) See NOTE *2      IN BOTH FRONT DOORS

NOTE *2 Use ORANGE/VIOLET for LOCK and PINK/BLACK for UNLOCK at the DRIVERS DOOR SWITCH. Use BLACK/WHITE for LOCK and PINK/BLACK for UNLOCK at the passenger front door switch.

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~wirewise~ Verify all wiring with your meter before making any connections!

Type C Door Locks

You'll need 4 relays for your vehicle's door locks. Two for the driver's door and two for the passenger's.

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~wirewise~ Verify all wiring with your meter before making any connections!

Can I just use two relays to hook up just the drivers side?

Yes.

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~wirewise~ Verify all wiring with your meter before making any connections!

Well I actually have 2 SPDT relays laying around I was going to use for wiring up my amplifiers but I will see if I can't get this to work for my doors so I know to buy more later.

Well good news is that my relays work. I can send negative power to them with my power probe and they trigger my door locks. Bad news is I can't seem to figure out why I'm not getting any negative output from my car alarm anymore.

EDIT: Tested leads from alarm and each one gives off 0.1 volts when I trigger lock/unlock on the remote. Its not enough voltage to trigger the relay. I have all the constant and ignition 12v wires connected so I don't see why its not working.

It sounds like you may have toasted the alarm door lock outputs when you had them connected to the door lock motor legs and used the switch to lock/unlock the doors. BTW, you should be looking for continuity to ground, not necessarily voltage, unless you have the positive lead of your meter connected to 12V+ while probing the alarm door lock outputs with the negative lead of your meter, but the pulses may be too short for you to get an accurate reading whether they are good or bad.

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~wirewise~ Verify all wiring with your meter before making any connections!

Was hoping you wouldn't say that... Not really sure what to do then besides trying to get a new brain.

Your alarm may have other outputs you could use to activate the lock and unlock relays, but I do not have a wiring manual for your alarm. If you can post it, I may be able to offer some suggestions.

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~wirewise~ Verify all wiring with your meter before making any connections!

Thank you for all the help. Here are some pictures I took of the wiring diagram and descriptions with my phone.

Great photos!

It looks like you can use the Orange wire in connector 2 for your (-) lock output to the lock relay and the Orange/White for your (-) unlock output to the unlock relay, but first I would try the Orange/Black in connector 4 for unlock if you were using the Blue in connector 4 before. Also, make sure you have the Driver's Priority Unlock in programming (1-04) enabled before trying the Orange/Black in connector 4.

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~wirewise~ Verify all wiring with your meter before making any connections!

Well good news, it worked! Well at least the lock "orange wire" triggers the relay to lock my doors but I am having trouble setting 1-04 to option 2. Tried holding both lock and unlock for 2.5 seconds and then after that holding the lock button and cycling the starter for 2.5 seconds but all it did was make the alarm go off. Think I might be doing it wrong though. Here are the directions.

Not sure if you noticed when you read it again, but it says to hold both lock and unlock for 2.5 seconds, then hold both lock and unlock for 2.5 seconds again, then tap start and wait for light flash/chirp to scroll through to each option.

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~wirewise~ Verify all wiring with your meter before making any connections!

Not seeing any parking lights flash or the alarm chirping after any of the button presses besides pressing the unlock button to disarm the car. I'm hitting road blocks it seems every step of the way with installing this alarm. Not sure what I am missing for it to not enter option any of the option menus.

In that case, I would just go ahead and connect the Orange/White in connector 2 to the coil of the unlock relay and be done with it. No programming should be necessary for that output to function.

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~wirewise~ Verify all wiring with your meter before making any connections!

Thank you so much. Got everything working and I now have a functioning alarm, remote start, and keyless entry. I can't thank you enough for the help you have provided me.

You're welcome. That's great to hear! Enjoy!

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~wirewise~ Verify all wiring with your meter before making any connections!