the notorious overhead console...

[chcknugget]

I have a 96 jimmy and am installing the "mode" computer.

I talked to a guy on AIM who said that there was a main ecu wiring harness that goes under the steering wheel. He said that the dark green wire is the vehicle speed sensor and the purple wire is serial input.

Does anyone know if this is true?

Is this large colorful bunch of wires that harness?

[maddog245]

Thats too wild I just e-mailed you about the wearbouts of the SERIAL DATA and VSS. Rlift say's you need to run to the computer. (both wires)
S-10 Fourms say the VSS at the BLACK side of the main computer is PIN 3. I have not got that far in the install to find out. All I have left are the VSS wire and the SERIAL DATA. I am getting temp for like 60 sec then goes -- I think it is trying to update and the other wires are not connected I will know more later today.

Maddog

[rlith]

Was cleaning up...yesterday and found my schematics

VSS=Pin 4 (dk green) on the black connector at the ecm
Serial data=pin 11 ( PPL ) on the black connector at the ecm

[chcknugget]

aren't pin 3 and 4 both vss?

[rlith]

Originally Posted by chcknugget

aren't pin 3 and 4 both vss?

Yes, but 3 is for the cruise which is 9000 pulse where as pin 4 is 4000 pulse which is the proper freqency...

[maddog245]

Originally Posted by rlith

Was cleaning up...yesterday and found my schematics

VSS=Pin 4 (dk green) on the black connector at the ecm
Serial data=pin 11 ( PPL ) on the black connector at the ecm

Ok got everything hooked up went to pin 4 drk/grn for VSS and pin 11 ppl for serial (Yellow). Air temp sensor reads for about 60 seconds then goes --. I start the truck and it appears then quits. It is showing 99mpg ave and 375 gal used then they too also go to the --. I don't know what I could have done I have all good connections that I know of. And yes my compass is also reading C and will not calibrate.

Maddog

[rlith]

you have to drive in concentric circles to calibrate it

Check your grounds...

[maddog245]

Originally Posted by rlith

you have to drive in concentric circles to calibrate it

Check your grounds...

Yea I did that I drove around and around and around. Do I have to hold the buttons while I am driving. Everything goes blank after 60 secs. If I do hold it it goes to 8 and the reboots and still has the C

[rlith]

where did you hook pin 7 up to? (RAP Fuse supply voltage)

[maddog245]

Originally Posted by rlith

where did you hook pin 7 up to? (RAP Fuse supply voltage)

To Radio power drk/grn 7

[rlith]

wrong circuit, needs to go to pin b11 on the BCM connector (pink/blk) circuit 1303

[maddog245]

Originally Posted by rlith

wrong circuit, needs to go to pin b11 on the BCM connector (pink/blk) circuit 1303

I ran the serial data to 11 is that the same one.number 7 list as 1301

[maddog245]

Originally Posted by maddog245

I ran the serial data to 11 is that the same one.number 7 list as 1301

I looked and the only thing is seen was pink/wht. I have it wired as follows.


7 dk/grn to radio power
8 black/white and black from OH switch lites to black passenger mirror ground
9 drk grn/blk to pin 4 of black side of computer (BCM)
10 Lt grn/black to sensor on radiator mount ground to lite on inside hood
11 gry to radio gry
12 ppl/white to brown lite switch
13 not used
14 Orange constant-passenger mirror feed for OH lites (switched) and the DIC
15 Yellow to pin 11 purple at black side of computer (BCM)
.Maddog

[rlith]

Originally Posted by maddog245

I looked and the only thing is seen was pink/wht. I have it wired as follows.


7 dk/grn to radio power
8 black/white and black from OH switch lites to black passenger mirror ground
9 drk grn/blk to pin 4 of black side of computer (BCM)
10 Lt grn/black to sensor on radiator mount ground to lite on inside hood
11 gry to radio gry
12 ppl/white to brown lite switch
13 not used
14 Orange constant-passenger mirror feed for OH lites (switched) and the DIC
15 Yellow to pin 11 purple at black side of computer (BCM)
.Maddog

NOOOOOO...#7 goes to the BCM NOT THE ECM (BCM =Body control module) #7 connects to position B11 on the BCM which is a pink wire w/ black stripe...

[maddog245]

Originally Posted by rlith

NOOOOOO...#7 goes to the BCM NOT THE ECM (BCM =Body control module) #7 connects to position B11 on the BCM which is a pink wire w/ black stripe...

Ah Im sure that may have something to do with it. Now all I have to do is find the BCM!