3rd Gen Ram Tech 2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

cruse control problem

Old Aug 30, 2011 | 05:55 PM
  #1  
theice's Avatar
theice
Thread Starter
|
Professional
Joined: Aug 2011
Posts: 196
Likes: 0
Default cruse control problem

hi i am new here but i have a 2002 dodge ram 1500 quad cab 4.7 and when i turn my cruise on it will come on for about a minute then go out and i can not set it to work the truck sat for about a year and everything worked fine before i left it sit any help is greatly appreciated thx. Had the dealer check the switches in the column and they said they were working fine.
 
Reply
Old Aug 30, 2011 | 07:01 PM
  #2  
weedahoe's Avatar
weedahoe
Hall Of Fame
Hall of Fame Member
Joined: Mar 2009
Posts: 19,168
Likes: 23
From: South GA
Default

welcome to the site. so the dealer couldnt find anything wrong or they didnt get deep into it?

normally we see abs sensor issues causing problems like that but there are other things also
 
Reply
Old Aug 30, 2011 | 07:56 PM
  #3  
theice's Avatar
theice
Thread Starter
|
Professional
Joined: Aug 2011
Posts: 196
Likes: 0
Default

no they wanted too much to find out what it was for my budget and no codes are being thrown one other thing but i don't think it has to do with this but the cargo light does not come on when i open the door but does come on when i turn it on with the switch on the headlight switch
 
Reply
Old Aug 30, 2011 | 08:06 PM
  #4  
lxman1's Avatar
lxman1
Site Moderator
15 Year Member
Photogenic
Photoriffic
Liked
Joined: May 2008
Posts: 9,657
Likes: 24
From: Louisville, Ky
Default

Mine quit after a new drivers side hub bearing was replaced. The new hub had a bad sensor. Check the wiring to the front left hub. Perhaps a critter chewed thru it.
When my sensor was bad, Mine wouldn't even power up.
 
Reply
Old Aug 30, 2011 | 08:24 PM
  #5  
theice's Avatar
theice
Thread Starter
|
Professional
Joined: Aug 2011
Posts: 196
Likes: 0
Default

thx but replaced both front hubs and don't have any sensors on my front hubs also this will happen even if im sitting in my driveway turn on the cruise and stays on for a little bit then shuts off like maybe 30 to 40 seconds
 

Last edited by theice; Aug 31, 2011 at 06:58 AM.
Reply
Old Aug 31, 2011 | 08:20 PM
  #6  
theice's Avatar
theice
Thread Starter
|
Professional
Joined: Aug 2011
Posts: 196
Likes: 0
Default

no one have any ideas where to look next
 
Reply
Old Aug 31, 2011 | 08:37 PM
  #7  
lxman1's Avatar
lxman1
Site Moderator
15 Year Member
Photogenic
Photoriffic
Liked
Joined: May 2008
Posts: 9,657
Likes: 24
From: Louisville, Ky
Default

I'm not sure where the 02 gets it's signal from then.
 
Reply
Old Sep 1, 2011 | 11:02 AM
  #8  
theice's Avatar
theice
Thread Starter
|
Professional
Joined: Aug 2011
Posts: 196
Likes: 0
Default

does anyone know where the power comes from for this and how i can maybe jump it to work really miss my cruise do alot of highway driving thx
 
Reply
Old Sep 2, 2011 | 12:19 AM
  #9  
Caseys-dodge's Avatar
Caseys-dodge
Veteran
Joined: Feb 2010
Posts: 423
Likes: 0
From: Houston, TX
Default

Well the 2002 service manual doesn't mention much at all but here it is.

The cruise indicator gives an indication to the vehicle
operator when the speed control system is turned
On, regardless of whether the speed control is
engaged. This indicator is controlled by the instrument
cluster circuit board based upon cluster programming
and electronic messages received by the
cluster from the Powertrain Control Module (PCM)
over the Programmable Communications Interface
(PCI) data bus. The cruise indicator is completely
controlled by the instrument cluster logic circuit, and
that logic will only allow this indicator to operate
when the instrument cluster receives a battery current
input on the fused ignition switch output (runstart)
circuit. Therefore, the indicator will always be
off when the ignition switch is in any position except
On or Start. The indicator only illuminates when it is
switched to ground by the instrument cluster circuitry.
The instrument cluster will turn on the cruise
indicator for the following reasons:
² Cruise Lamp-On Message - Each time the
cluster receives a cruise lamp-on message from the
PCM indicating the speed control system has been
turned On, the cruise indicator is illuminated. The
indicator remains illuminated until the cluster
receives a cruise lamp-off message from the PCM or
until the ignition switch is turned to the Off position,
whichever occurs first.
² Actuator Test - Each time the cluster is put
through the actuator test, the cruise indicator will be
turned on, then off again during the VFD portion of
the test to confirm the functionality of the VFD and
the cluster control circuitry.
The PCM continually monitors the speed control
switches to determine the proper outputs to the
speed control servo. The PCM then sends the proper
cruise indicator lamp-on and lamp-off messages to
the instrument cluster. For further diagnosis of the
cruise indicator or the instrument cluster circuitry
that controls the indicator, (Refer to 8 - ELECTRICAL/
INSTRUMENT CLUSTER - DIAGNOSIS AND
TESTING). For proper diagnosis of the speed control
system, the PCM, the PCI data bus, or the electronic
message inputs to the instrument cluster that control
the cruise indicator, a DRBIIIt scan tool is required.
Refer to the appropriate diagnostic information.
 
Reply
Old Sep 2, 2011 | 10:02 PM
  #10  
weedahoe's Avatar
weedahoe
Hall Of Fame
Hall of Fame Member
Joined: Mar 2009
Posts: 19,168
Likes: 23
From: South GA
Default

every truck ive ever been under or worked on had at least one abs sensor which was in the drivers side hub. does your driver side spindle have a small flat piece of bracket on the riht side just above the hub?

did you just buy this truck? possible someone swapped out the hub without the sensor?
 
Reply

Thread Tools
Search this Thread

All times are GMT -4. The time now is 08:01 AM.