no speedo and trans wont shift

[canbronco]

Hey new to the Bronco Zone. But I switched out my 93 wiring harness for a 95 mass air and switched the tranny from E40D to a 4R70W. What am i missing? everything else works except for tranny shifting and no speedo. any ideas or suggestions would be greatly appreciated. i am missing the RABS module for the rear ABS does this monitor the VSS also? 4WABS is gone now its supposedly only RABS/

 

[wileec]

I think the speed sensor is part of the RABS controls all of the above. Should be a plug on the top of the diff.

 

[miesk5]

yo,

As WILEEC mentioned.

You need the VSS signal input to drive the PSOM, as well as the PCM, E4OD (4R) and if equipped, the cruise contol

The VSS signal travels from the VSS through a fewc connectors to the 4WABS Control Module and then to the PSOM and on to PCM/Tranny/CC via more connectors; as show in this;

4WABS Wiring Diagram & Connectors in a 93, 94-96 are similar Source: by Steve

http://www.supermotors.net/registry/media/170517_1

To bypass the 4WABS module @ it's harness's connector & feed the ABS signal directly to the PSOM,

In Module's connector (harness side); jumper LG/Bk to LG/Y, and R/Pk to O/LB..."

pic of the connector and jumpers

by Turbo Ghost at http://img.photobucket.com/albums/v252/turboghost/ABSConnectorw-jumpers.jpg

Also, many Wiring Diagrams in a 95 from EVTM (Click Next to view more)

Source: by SeattleFSB (Seattle FSB) at http://www.supermotors.net/registry/media/859597

 

[canbronco]

yo,

As WILEEC mentioned.

You need the VSS signal input to drive the PSOM, as well as the PCM, E4OD (4R) and if equipped, the cruise contol

The VSS signal travels from the VSS through a fewc connectors to the 4WABS Control Module and then to the PSOM and on to PCM/Tranny/CC via more connectors; as show in this;

4WABS Wiring Diagram & Connectors in a 93, 94-96 are similar Source: by Steve

http://www.supermotors.net/registry/media/170517_1

To bypass the 4WABS module @ it's harness's connector & feed the ABS signal directly to the PSOM,

In Module's connector (harness side); jumper LG/Bk to LG/Y, and R/Pk to O/LB..."

pic of the connector and jumpers

by Turbo Ghost at http://img.photobucket.com/albums/v252/turboghost/ABSConnectorw-jumpers.jpg

Also, many Wiring Diagrams in a 95 from EVTM (Click Next to view more)

Source: by SeattleFSB (Seattle FSB) at http://www.supermotors.net/registry/media/859597

 

[canbronco]

Thanks very much for the info boys, I'll give it a shot.

 

[miesk5]

yo,

Update; re- your PM in case you don't see the message indicator;

All you need for the speedo to work and then the 4r and PCM is to run the two wire from VSS to psom module connector.

You need circuit (CKT):

519 LG/BK and 523 R/PK (oink)

Grab the VSS wires at the connector in firewall to interior - C202;

Here is its location http://www.supermotors.net/registry/media/851827_1 (below master cylider booster)

n

Here are the pins diagram



see pins 46 & 47

Follow the path in this diagram



you will see we bypass those bastard connectors in dash (C119) and at 4WABS Module.

Now to the PSOM connector. (note colors change, but we-re still running it like a string..



4 491 (O/LB) 4WABS Signal Input

5 530 (LG/Y) 4WABS Signal Return

GL!