Steering Angle Sensor: Service and Repair

REMOVAL AND INSTALLATION

WARNING:
Before removing the steering wheel and air bag module assembly, refer to Service Precautions Service Precautions and Air Bag Module and Clock Spring Service and Repairor Service and Repair.

CAUTION:

- When centering the clock spring, always remove the clock spring from the column switch in advance. Otherwise, the sensor may be damaged.
- If the clock spring is not correctly aligned, the steering wheel may not be turned or the cable inside the clock spring may be broken, causing the SRS to be inoperative.
- Always carry out steering wheel sensor calibration after the steering wheel sensor has been installed (Refer to Testing and Inspection ). This is necessary because the TCL/ASC-ECU should update the steering neutral point.













INSTALLATION SERVICE POINT

]]A[[ STEERING WHEEL SENSOR NEUTRAL POINT ALIGNMENT





1. WARNING:
Ensure that the clock spring's mating marks are properly aligned.
If not, the steering wheel may not rotate completely during a turn, or the flat cable in the clock spring could be damaged, This would prevent normal SRS operation and possibly cause serious injury to the driver.

Align the mating marks of the clock spring.
[Mating Mark Alignment]
(1) Turn the clock spring clockwise fully. Then turn it back approximately 3-3/4 turns counterclockwise to align the mating marks.
(2) Then install the clock spring to the column switch.





2.
CAUTION:
Be sure to align the three neutral point marks of the steering wheel sensor at the same time as shown in the figure. If these mating marks are not aligned correctly, the steering wheel sensor may be damaged.

Align the three neutral point marks of the steering wheel sensor at the same time as shown in the figure.
[Mating Mark Alignment]
(1) If the neutral point mark is not seen when the window for checking the neutral point of the steering wheel sensor is checked, turn it to align the neutral point marks as shown in the figure.
(2) With paying attention not to misalign the neutral position, install the steering wheel sensor to the clock spring and and column switch assembly.
NOTE:
A new steering wheel sensor has a pin for preventing the rotation of (fixing) the steering wheel sensor. After installing the sensor to the clock spring and column switch assembly, remove this pin.

(3) Install the clock spring and column switch assembly to the vehicle, maintaining the neutral position correctly.