I need Help with overhead console

[manny951]

so lately ive been tryin to fix this new trip computer mode i had the compass/and tempature working fine in a 98 astro van i got this new computer from a 2002 or 2001 i hooked up evreything i also ran the data wire yellow to obd2 socket purple but my problem is there are 2 yellows wires on the plug the rest looks like it matches i had a pink wire left i hooked up one of the yellows didn't show up i hooked up the other that showed up light on it so the last one is for the computer this is what i dont get i start my van on it shows tempature then fuel then it goes blank with slashes like nothing is reading nothing on gas no numbers just blank did i hook it up wrong? the dimmer work it lights up what else can be wrong?

[Phantom]

One of the yellow wires goes to the goes to the radio/acc/ fuse , the other yellow wire goes to computer data line,
When you get the - - dashes it means the system needs to be calibrated , after which it will read out numbers

or you have lost connection to the data input

or lost connection with the temp sensor

[manny951]

okay i have evreything connected corecttly at first i do get readings then after 14 sec it goes _ _ i try to calibrate it but nothing happends this is bugging me when u say yellow goes to acc,stereo does it need power

[Phantom]

What was the reason you changed out the computer and did you change just the display , ? the way the 98 is wired is a little different than the way the 2002 is wired ,

[manny951]

reason i changed display was because i wanted to show avg speed mgp ect.. the one i had before just showed compass/tempature i was told to get the new one and get the pigtail all i needed was to run 1 wire was to obd2 to puple wire

[Phantom]

Which yellow wire did you run to the obd connector?

[manny951]

yellow wire thats connected to the blue i double checked evreything double evreything seems right i just dont get how come after 12 sec it goes blank

[Phantom]

Does it give temp or compass reading?

the newer display gets a data signal from the VSS , did you connect it up?

[manny951]

when it starts for those 12 sec evreything gives reading then it goes blank but the compass stays at NW no tempature but what is the vss?

[Phantom]

VSS Vehicle Speed Sensor ,, it is a dark green wire that connects to either the PCM or speedo to get mpg info, that is likely your problem

[manny951]

where does that connect to i connected it to the green one that matches this plug has only 7 plugsold has 6

[Phantom]

It would be easier if you would tell me what what way the 6 wire plug was wired , and then tell me how the 7 wire plug is now wired , you may have to add in another wire , I had to when I installed mine . I added 2 wires one to vss and the other to obd

[manny951]

okay well first this 98 atro never had the plugs for no overhead consile at all went to get plugs from a 98 just regular console compass/ tempature what i conncted next to the fuse box was for blck and gray with those wires i ran it to thw 98 compass worked perfect now that o got ths 2002 it seems colors are a bit off i connect the negative and yellow conected to red it powers he 2002 i get the readings without nything connected then it goes blank now im tyin to figure i guess the rest of the wires are not right

[Phantom]

I think you need to connect the vss

in order to tell you which to choose it makes it easier if you describe
6 plug wires
1. color & where it connects
2.color & where it connects
3. color & where it connects
4. color & where it connects
5 .color & where it connects
6 .color & where it connects

7 wire plug
1.color & where it connects
2.color & where it connects
3.color & where it connects
4.color & where it connects
5.color & where it connects
6.color & where it connects
7.color & where it connects

that way I can easily see how you had it , and how it is now , yes the wiring color scheme on the 2002 is Different than the 98
light green wire will go next to fuse box , and in some cases the dark green also , but sometimes the dark green will need to another source

[manny951]

pkay let me see if i can get this corectly

1998 wirring diagram
7 ppl white - illum
8 grey - illum
9 dark green - vss
10 liht green- amb temp
11 pink - ign
12 ground- black

[manny951]

on the new 2002

for vss is the dark green white
grey - illum
ppl white - illum
light green black says -fuse block behind fuse dash
yellow - hot and run
yellow - computer data
black- with rear radio controls but i connect to negative turns on the computer

[Phantom]

what i conncted next to the fuse box was for blck and gray with those wires i ran it to thw 98 compass worked

got ths 2002 it seems colors are a bit off i connect the negative and yellow conected to red it powers he 2002 i get the readings without nything connected then it goes blank now im tyin to figure i guess the rest of the wires are not right

yellow wire thats connected to the blue i double checked evreything double evreything seems right

i also ran the data wire yellow to obd2 socket purple

you connected black and gray wires next to fuse box , and ran it to the console ... I guessing you connected it to the convenience center , is that right and how did you connect as it needs plugs to plug into it , is that the plugs you refer to that you got from a 98 and plugged into next to fuse box?

I am not sure what you are trying to say here ,,you connected negative? you mean the black wire? and yellow connected to red?
but then you say that the yellow wire connected to blue ,

data line should go to purple

Since this entire install is an add-in ; I asked for the 1-6 & 1-7 in that how you personally, physically wired it together so that I can compare what you physically connected that was working previously ,like you had started to to say ....
,,so that I could compare what you physically have connected now on the 2002 ,, but you make no mention of the red wire , blue wire or how or why you connected a red wire to a yellow wire , and you posted what a diagram says it should be ; Do you see what i mean?
But only 3 things that I can think of relating to the problem is
1. it is wired wrong
2. you do not have a VSS or the data signal getting to the display
3. the display is bad

[1297chevastro]

I didn't know the newer Astros with the overhead console had more than just a compass and temperature gauge phew now I'm jealous.