Toyota Avalon V6-3.5L (2GR-FE) Manufacturer Code Page 989

Toyota Avalon V6-3.5L (2GR-FE) Manufacturer Code Page 989

2. READ VALUE USING TECHSTREAM (REAR SPEED SENSOR)

(a) Connect the Techstream to the DLC3.

(b) Start the engine.

(c) Select the Data List mode on the Techstream.

ABS/VSC/TRAC

(d) Check that there is no difference between the speed value output from the speed sensor displayed on the Techstream and the speed

value displayed on the speedometer when driving the vehicle.

OK:

The speed value output from the speed sensor displayed on the Techstream is the same as the actual vehicle speed.

NG -- INSPECT REAR SPEED SENSOR INSTALLATION

OK -- Continue to next step.

3. PERFORM TEST MODE (SIGNAL CHECK)

(a) Check if Test Mode DTCs are detected.

Result:

B -- INSPECT REAR SPEED SENSOR INSTALLATION

A -- Continue to next step.

4. INSPECT SPEED SENSOR AND SENSOR ROTOR SERRATIONS

(a) INSPECTION USING OSCILLOSCOPE

(1) Disconnect the rear speed sensor connector.

(2) Connect the oscilloscope to terminals 1 and 2 of the rear speed sensor.

(3) Check that a waveform is output when the tires are rotated.

OK:

A waveform as shown in the figure should be output.

HINT

* As vehicle speed (wheel rotation speed) increases, the width of the waveform narrows and the fluctuation in the output voltage

becomes greater.

* When noise is identified in the waveform on the oscilloscope, error signals are generated due to rotor scratches, looseness or