ASE A4 Suspension and SteeringSteering System Diagnosis and RepairMedium
A technician is performing a pre-alignment inspection on a vehicle. During the inspection, they notice that the steering wheel is off-center when the vehicle is driven straight, but all toe, camber, and caster measurements are within specifications. What is the MOST likely cause of the off-center steering wheel?
- AAn improperly indexed steering wheel on the column.
- BIncorrect adjustment of the steering linkage center.
- CExcessive play in a tie rod end.
- DA worn steering gear internal component.
Show answer & explanationAnswer & explanation
Correct answer: B. Incorrect adjustment of the steering linkage center.
If all alignment angles (toe, camber, caster) are within specification, but the steering wheel is off-center, it indicates that the steering linkage was not properly centered when the toe adjustment was made. The toe should be adjusted with the steering wheel and steering gear exactly centered.
Why the other options are wrong
- A. An improperly indexed steering wheel on the column would result in an off-center wheel, but it is less common than an incorrect toe adjustment and usually results from a previous repair where the wheel was removed.
- C. Excessive play in a tie rod end would cause a loose steering feel and potentially affect toe, which is stated as being in specification.
- D. A worn steering gear internal component would typically cause excessive play in the steering wheel or a 'dead spot,' not just an off-center steering wheel with correct alignment.
Off-Center Steering Wheel (Alignment)
An off-center steering wheel, despite correct alignment angles, typically results from the steering linkage not being centered before toe adjustment.
- Alignment angles are within spec.
- Steering wheel is off-center.
- Caused by improper toe adjustment procedure.
Memory trick: Alignment's good, but the wheel's askew; linkage center is the clue!