Mossyrocks
10-31-2007, 09:26 PM
Bypassing ABS/ wheel speed sensors. Using tacoma output shaft speed sensor for speedometer
First Id like to say, this is at your own risk. And Im not sure of the outcome if wheel speed sensors are still in place.
You will need:
Output shaft speed sensor from a tacoma. J/Y or dealer ($220)
If you go with a junkyard sensor as I did and youd like to check it. Connect the hot wire (as seen below) to the positive on the battery. Connect the ground wire (as seen below) to the negative on the battery. And with a volt meter attached to the signal wire, turn the plastic gear by hand. If you get pulsing voltage from the signal then its good to go.
3 colors/ lengths of wire.
Butt splice connectors
Piggy back connectors.
If you dont have the tools, you shouldnt be doing this
Side Note:
If you go with a junkyard sensor as I did and youd like to check it. Connect the hot wire (as seen below) to the positive on the battery. Connect the ground wire (as seen below) to the negative on the battery. And with a volt meter attached to the signal wire, turn the plastic gear by hand. If you get pulsing voltage from the signal then its good to go.
At the output shaft on the pass side of the transfer case you will need to remove a plug. One 12mm bolt holds it in place.
Replace this plug with the tacoma output shaft speed sensor.
http://i44.photobucket.com/albums/f35/mossyrocks/speedo004_800x800.jpg
From the sensor harness there will be 3 wires. Black w/ red stripe (this is the hot wire. 12v) Solid blue (this is the negative) and Green w/ red stripe (the signal wire)
http://i44.photobucket.com/albums/f35/mossyrocks/speedo003_800x800.jpg
Extend the hot wire (bl-r) to a 12v source. I ran this straight to the battery with a 10a inline fuse.
UPDATE: Hot wire behind the dash is Black w/ a yellow stripe. Its on the brown connector.
Extend the negative (l) to a ground. I used the neg. on the battery.
Extend the singal wire (G-R) up behind the dash.
On the back of the speedometer there will be 3 connectors. Blue, White, and Brown. On the brown connector, second terminal is the input signal for the speedometer. This is the input from the ABS ECU. This wire is gray with a blue stripe. You will splice in the new singal wire with this wire using a piggy-back. I did not disconnect mine from the ABS ecu. It works without disconnecting so I figured Id leave it at that.
http://i44.photobucket.com/albums/f35/mossyrocks/speedo012_800x800.jpg
Then just put everything back together and your good to go.
If there is an easier way than please, let me know.
First Id like to say, this is at your own risk. And Im not sure of the outcome if wheel speed sensors are still in place.
You will need:
Output shaft speed sensor from a tacoma. J/Y or dealer ($220)
If you go with a junkyard sensor as I did and youd like to check it. Connect the hot wire (as seen below) to the positive on the battery. Connect the ground wire (as seen below) to the negative on the battery. And with a volt meter attached to the signal wire, turn the plastic gear by hand. If you get pulsing voltage from the signal then its good to go.
3 colors/ lengths of wire.
Butt splice connectors
Piggy back connectors.
If you dont have the tools, you shouldnt be doing this
Side Note:
If you go with a junkyard sensor as I did and youd like to check it. Connect the hot wire (as seen below) to the positive on the battery. Connect the ground wire (as seen below) to the negative on the battery. And with a volt meter attached to the signal wire, turn the plastic gear by hand. If you get pulsing voltage from the signal then its good to go.
At the output shaft on the pass side of the transfer case you will need to remove a plug. One 12mm bolt holds it in place.
Replace this plug with the tacoma output shaft speed sensor.
http://i44.photobucket.com/albums/f35/mossyrocks/speedo004_800x800.jpg
From the sensor harness there will be 3 wires. Black w/ red stripe (this is the hot wire. 12v) Solid blue (this is the negative) and Green w/ red stripe (the signal wire)
http://i44.photobucket.com/albums/f35/mossyrocks/speedo003_800x800.jpg
Extend the hot wire (bl-r) to a 12v source. I ran this straight to the battery with a 10a inline fuse.
UPDATE: Hot wire behind the dash is Black w/ a yellow stripe. Its on the brown connector.
Extend the negative (l) to a ground. I used the neg. on the battery.
Extend the singal wire (G-R) up behind the dash.
On the back of the speedometer there will be 3 connectors. Blue, White, and Brown. On the brown connector, second terminal is the input signal for the speedometer. This is the input from the ABS ECU. This wire is gray with a blue stripe. You will splice in the new singal wire with this wire using a piggy-back. I did not disconnect mine from the ABS ecu. It works without disconnecting so I figured Id leave it at that.
http://i44.photobucket.com/albums/f35/mossyrocks/speedo012_800x800.jpg
Then just put everything back together and your good to go.
If there is an easier way than please, let me know.