Initializing And Calibrating Steering-Angle Sensor

Information 

• The steering-angle sensor must be recalibrated on the measuring platform following repairs to or work on the chassis/steering or if the steering-angle sensor/steering column switch is replaced. 
• Calibration includes initialisation. 
• In order to calibrate the steering-angle sensor correctly, the vehicle must be on the measuring platform, the wheel alignment values must be correct and the steering must be in the straight-ahead position. 
• Calibrate the steering-angle sensor by selecting >>Steering wheel electronics>> >> Maintenance/repairs << >>Steering-angle sensor calibration << in the PIWIS Tester II control unit overview. 

The steering-angle sensor must be calibrated using the menu options in > 9818 - PIWIS Tester II  under the specified test conditions:

1. The chassis is adjusted according to Porsche specifications.
2. Switch on ignition.
3. Turn wheels to straight-ahead position (steering wheel in centre position).
4. Turn the steering wheel out of the straight-ahead position (approx. 6° to the left/right) in accordance with the instructions on PIWIS Tester II. Turn the wheels back to the straight-ahead position and follow the instructions on PIWIS Tester II.
5. Using PIWIS Tester II, select >>Steering wheel electronics<< >>Maintenance/repairs<<>>Calibrate steering-angle sensor<< in the control unit overview.

   After successful calibration, the stored fault code is erased from the fault memory. The PSM indicator light in the instrument cluster goes out.

6. Re-teach electric steering lock settings. > 489025 Power-steering gear: Teaching steering lock settings