Location of the Speed Sensor in the Scion XB
- 1). Raise the hood on your XB and locate the engine's air cleaner assembly. The assembly houses your air filter and is mounted on the right side of your engine compartment. It has a large black rectangular cover and a big black tube coming out of the left side of it.
- 2). Locate the air cleaner assembly's mounting bracket. The bracket sits under the lower portion of the assembly. Four inches to the left--horizontal--of the bracket, you will see a small wiring harness plug connected to the transmission by one bolt. The harness plug attaches to your transmission revolution sensor.
- 3). Unplug the wiring harness connected to the transmission revolution sensor by hand. Do not use any tools because you might damage the harness plug.
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