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06 dodge dakota rostra cruise


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swannt 
Member - Posts: 1
Member spacespace
Joined: March 03, 2008
Location: Kansas, United States
Posted: March 04, 2008 at 5:57 PM / IP Logged  

I am having a lot of trouble with this cruise and still have not gotten it to work.  Here is what is wired so far, and I would like to double check that I have the correct VSS wire.

Rostra 250-1223:

Brown  -  Pink/White on vehicle
Red  -  Grey/Pink (+12V @ Brake)
Violet  -  WHITE/ Blue (@ Brake)
Blue -  Grounded at this time

I am using the 250-3421 control arm and I have checked that it is working according to the manual.

I used the 250-4369 vss adapter and have it wired as the instructions said.

For the VSS, I connected to the Brown w/ 2 Green stripes wire at pin 32 of the bottom connector of the PCM (upper-left of engine bay).  Is this the correct wire?

I have the gain set to mid, 38600 pulse, 6 cylinder/low, squarewave, automatic, closed circuit.

I am getting absolutly no reponse from the cruise control.  It will not set, it will not accelerate using the control arm.

I have checked the ground, I connected it to the factory ground bolt near the air intake.  I checked the brake and power connections using my DMM.  I have not checked the VSS because I don't have a good method to do so, (did not have my oscilloscope with me).

Does anyone have any suggestions on where to go next? Verifying the VSS would be a big help to me.  Any assisstance is appreciated.

Thanks in advance.

sparkie 
Platinum - Posts: 2,061
Platinum spacespace
Joined: November 06, 2003
Location: Canada
Posted: March 04, 2008 at 6:42 PM / IP Logged  
Rostra mentions that the correct plug in the ECM that has the VSS wire is a green plug. Depending on your cruise control unit, some have a self-diagnostic mode. I'm not sure if the 250-1223 has this. Using this will tell you if you have a VSS signal. Also check that with the ignition off you have less than 5 ohms resistance to ground on the violet brake switch wire. The cruise doesn't care if you have 12 volts on this wire when you press the brake, only that it has a ground when the brake isn't pressed. If you have brake light bulbs burnt out, the cruise may not work. All your other settings look good. If you had to change any dip switches though, make sure you turn off the cruise switch and the ignition, otherwise the changes won't take affect.
sparky
SoundAudio 
Copper - Posts: 242
Copper spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: May 26, 2004
Location: United States
Posted: March 04, 2008 at 7:10 PM / IP Logged  

I got my old Id working again.  Thanks for the response.  There is no green connector.  I really struggled with which wire was correct, all I got was the fourth connector, pin 32, light GREEN / WHITE or GREEN/ brown.  I guessed the bottom connector and pin 32, and the wire color was close.

The cruise does have a self-diagnostic mode, but i couldn't get it to work.  Maybe I should try it again.

Thanks again.

Good Luck!
-Thad
techman93 
Silver - Posts: 591
Silver spacespace
Joined: October 28, 2006
Location: Pennsylvania, United States
Posted: March 05, 2008 at 4:09 PM / IP Logged  
from rostra website
2006 DODGE TRUCKS DAKOTA
CRUISE CONTROL
Part # 250-1223
Control Lever: 250-3421,250-3742
Adapter: 250-4369 SIGNAL ADAPTER NOT NEEDED FOR MANUAL TRANS.
VSS Wire: AUTOMATIC TRANS. LOCATION 11 4-CONNECTOR COMPUTER GREEN CONNECTOR POSITION 32, MANUAL TRANSMISSION 3-CONNECTOR COMPUTER BLACK CONNECTOR POSITION 13
VSS Wire Color: AUTOMATIC LT. GREEN / WHITE or GREEN/ BROWN MANUAL WHITE/ ORANGE or GREEN/ YELLOW
VSS Pulse: AUTOMATIC 38,600 MANUAL 8000
VSS Tach Wire: IF MANUAL TRANSMISSION USE CLUTCH SWITCH 250-4206
Tach Signal Wire Color: WHITE/ BLACK
Brake Switch Positive: PINK/BLUE
Brake Switch Negative: WHITE/ TAN
In your notes you did not mention that you grounded the black wire. I assume you did though.
The wire I'm test'n isn't doin' what it's supposed to be doin'... I am so glad I printed that tech sheet, with the wrong info.
Do it right the first time... or I might have to fix it for ya
SoundAudio 
Copper - Posts: 242
Copper spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: May 26, 2004
Location: United States
Posted: March 05, 2008 at 7:29 PM / IP Logged  

Thanks, I have looked at that, but there is no green connector so I was hoping someone who has done one before could verify that I got the correct wire.

I have checked my gound and it is good.

Thanks for all the replies.

Thad

Good Luck!
-Thad
sparkie 
Platinum - Posts: 2,061
Platinum spacespace
Joined: November 06, 2003
Location: Canada
Posted: March 05, 2008 at 7:47 PM / IP Logged  
Confirm all other circuits first using a volt/ohms meter. If everything checks, you can check to see if you are getting AC voltage on the VSS wire. You shouldn't have to move the truck very far to see a reading on the meter if you are on the correct wire. Check the other plugs in the PCM to make sure that there isn't another possible wire to use. My listing on the PCM for either motor (you didn't mention which size motor) show a yellow/pink wire in position 32 of a plug and it is connected to the transmission output speed sensor.
sparky
SoundAudio 
Copper - Posts: 242
Copper spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: May 26, 2004
Location: United States
Posted: March 05, 2008 at 9:27 PM / IP Logged  
It is the 3.7 liter.  Thanks for the support sparkie.  i will see if i can find that wire and check it with the volt meter.
Good Luck!
-Thad

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