Toyota Avalon V6-3.5L (2GR-FE) Manufacturer Code Page 993

Toyota Avalon V6-3.5L (2GR-FE) Manufacturer Code Page 993

(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 waveforms 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

foreign matter attached to the speed sensor.

NG -- CLEAN OR REPLACE SPEED SENSOR AND SENSOR ROTOR

OK -- Continue to next step.

11. 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.

HINT

These DTCs may be stored due to a malfunction in the connector terminal connection, etc.

NG -- REPLACE ABS & TRACTION ACTUATOR ASSEMBLY

OK -- END

Right Rear Wheel Speed Sensor Signal Malfunction (to 12/2010)

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM:

C0210/33,C0215/34,C1238/38,C1239/39,C1273/73,C1274/74,C1277/77,C1278/78: Right Rear Wheel Speed Sensor Signal Malfunction

C1278/78 - Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)

DESCRIPTION

Refer to DTCs C0200/31, C0205/32, C1235/35 and C1236/36 See: C Code Charts/C0200/Vehicle Stability Control System (to 12/2010).