Toyota Avalon V6-3.5L (2GR-FE) Manufacturer Code Page 840

Toyota Avalon V6-3.5L (2GR-FE) Manufacturer Code Page 840

B -- REPLACE ABS & TRACTION ACTUATOR ASSEMBLY

A -- END

Steering Angle Sensor Zero Point Malfunction - Vehicle Stability Control System (from 12/2010)

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1290/66: Steering Angle Sensor Zero Point Malfunction

C1290/66 - Steering Angle Sensor Zero Point Malfunction

DESCRIPTION

The skid control ECU acquires steering angle sensor zero point every time the ignition switch is turned to the ON position and the vehicle is driven

at 35 km/h (22 mph) or more for approximately 5 seconds. The ECU also stores the previous zero point.

If front wheel alignment or steering wheel position is adjusted without disconnecting the negative battery terminal, or if yaw rate and acceleration

sensor zero point is not acquired after the adjustments have been completed, the skid control ECU detects the difference between the previous zero

point and newly acquired zero point and outputs this DTC to indicate a poor adjustment.

Warning of the steering angle sensor zero point malfunction will be cancelled by turning the ignition switch off.

INSPECTION PROCEDURE

NOTICE:

When replacing the ABS & TRACTION actuator assembly, perform zero point calibration See: Brakes and Traction

Control/Antilock Brakes / Traction Control Systems/Acceleration/Deceleration Sensor/Testing and Inspection/Calibration (from

12/2010).

PROCEDURE

1. PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR

(a) Perform zero point calibration of the yaw rate and acceleration sensor See: Brakes and Traction Control/Antilock Brakes / Traction

Control Systems/Acceleration/Deceleration Sensor/Testing and Inspection/Calibration (from 12/2010).

HINT

* When the stored zero point of the yaw rate and acceleration sensor is cleared, steering angle sensor zero point will also be

cleared.

* If the zero point and output value of the yaw rate and acceleration sensor and the output value of the speed sensors are not

normal, steering angle sensor zero point cannot be acquired normally even if the vehicle is driven straight ahead at 35 km/h

(22 mph) or more.

NEXT -- Continue to next step.

2. CHECK STEERING ANGLE SENSOR ZERO POINT CALIBRATION

(a) Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds.

(b) Check that the centered position of the steering wheel is correctly set while driving straight ahead.

HINT

If front wheel alignment and steering position are adjusted as a result of abnormal centered position of the steering wheel, acquire

yaw rate and acceleration sensor zero point again after the adjustments are completed.

OK:

The centered position of the steering wheel is correctly set.