VSS Connector

[AlexTheGreek]

I'm trying to:

1) Locate the VSS connector
2) Identify the connector make and model

I've assumed that it may be one of these two:

[AlexTheGreek]

OK I answered #2 myself.


They are Yazaki 62 Z connectors.


available from www.eaternbeaver.com
or www.newunitedracingtech.com

[AlexTheGreek]

To be more precise here are the part numbers

Housing 62 Connectors Z Type Sealed Female 2 Light Gray 7123-8520-40
Housing 62 Connectors Z Type Sealed Female 2 Brown 7123-8521-80
Housing 62 Connectors Z Type Sealed Male 2 Light Gray 7222-8520-40
Housing 62 Connectors Z Type Sealed Male 2 Brown 7222-8521-80

[Visconti]

Why?

[Flat Black VW]

Originally Posted by Visconti

Why?

wondering this also. I know where the vss wire is behind the radio and depending on what you need it for that may be of use.

[AlexTheGreek]

Originally Posted by Visconti

Why?

Reasons:
1) VSS mod for the GPS unit
2) Speedometer calibration

To elaborate on #2, when changing final drive ratio or tire diameter, the speedometer needs recalibrating. This can be achieved with a correction unit (http://12oclocklabs.com/).

Do you know which of the two connectors in the picture is the VSS. The grey or the brown? Neither? They are located just above the bell housing.

[Sony]

Originally Posted by AlexTheGreek

Reasons:
1) VSS mod for the GPS unit
2) Speedometer calibration

To elaborate on #2, when changing final drive ratio or tire diameter, the speedometer needs recalibrating. This can be achieved with a correction unit (http://12oclocklabs.com/).

Do you know which of the two connectors in the picture is the VSS. The grey or the brown? Neither? They are located just above the bell housing.

If I recall correctly, the BRZ senses it's wheel speed from the ABS sensors on each wheel, not a sensor in the transmission. Changing the final drive ratio shouldn't affect your speedometer, only the diameter of your tires will affect it. It does it this way because it has to sense wheel speed from each tire anyways for traction control system purposes so it might as well use the wheel speeds sensors for the speedometer anyways.

Most likely those two connectors you have are an engine RPM sensor and some other sensor like a clutch position sensor or something. Speed sensors are not usually located on the bell housing, they are usually located on the back of the transmission near the output shaft to measure the rotational speed of the drive shaft which is directly related to the speed of the car.

[King Tut]

http://www.ft86club.com/files/BRZwiringi.pdf

[xwd]

Originally Posted by Sony

If I recall correctly, the BRZ senses it's wheel speed from the ABS sensors on each wheel, not a sensor in the transmission. Changing the final drive ratio shouldn't affect your speedometer, only the diameter of your tires will affect it. It does it this way because it has to sense wheel speed from each tire anyways for traction control system purposes so it might as well use the wheel speeds sensors for the speedometer anyways.

Most likely those two connectors you have are an engine RPM sensor and some other sensor like a clutch position sensor or something. Speed sensors are not usually located on the bell housing, they are usually located on the back of the transmission near the output shaft to measure the rotational speed of the drive shaft which is directly related to the speed of the car.

Yeah you do not need to change anything when changing the final drive. Racecomp Engineering installed the Cusco 4.51 FD and did no changes, the speedometer is fine.

[wparsons]

Since the speed is determined from the wheel speed sensors a final drive won't effect it, but a tire size change will.

[AlexTheGreek]

Originally Posted by Sony

Most likely those two connectors you have are an engine RPM sensor and some other sensor like a clutch position sensor or something. Speed sensors are not usually located on the bell housing, they are usually located on the back of the transmission near the output shaft to measure the rotational speed of the drive shaft which is directly related to the speed of the car.

Thats where the connectors sit, but the wiring goes down to the transmission area. I assume the BRZ does still have a speed sensor at the Transmission output shaft?

[AlexTheGreek]

Originally Posted by wparsons

Since the speed is determined from the wheel speed sensors a final drive won't effect it, but a tire size change will.

So how do you calibrate the speedo if you change tire rollout? Techstream software?

[Sony]

Originally Posted by AlexTheGreek

So how do you calibrate the speedo if you change tire rollout? Techstream software?

Yes

[AlexTheGreek]

10-4. Thanks for setting me straight people. I'm coming from the motorcycle world which is much simpler!