Calibrating Steering-Angle Sensor

Information 

• The steering-angle sensor must be re-calibrated after replacing the airbag contact unit. 
• To correctly calibrate the angle sensor, the vehicle must be on the measuring platform. 
• The steering angle sensor must be calibrated using the menu with the PIWIS Tester 9718 under the specified test conditions: 
• Running gear set according to Porsche specifications → Adjusting values for suspension alignment 
• Wheels in straight-ahead position and steering wheel horizontal. 
• In the straight-ahead position, the steering wheel may depart from the horizontal position (steering center position) by +/- 2.0° max. 

1. PIWIS Tester 9718  must be connected to the vehicle. Start the System Tester. Switch on ignition and press [>>] to continue.
2. Select vehicle type and press [>>] to continue.
3. Select control unit PSM  and confirm with [>>].
4. Actual values  must be selected and confirmed with [>>].
5. Security code  must be selected and confirmed with [>>].
6. Security code  must be written down. Press < to return to the Function selection  .
7. Calibration must  be selected and confirmed with [>>].
8. Security code  must be entered and confirmed with [>>].
9. Security code  must be confirmed with [F7].
10. Steering angle sensor  must be selected and confirmed with [>>].
11. Safety instructions  must be read and confirmed using [F7].
12. After successful calibration, the stored fault code is erased from the fault memory. The PSM indicator light in the instrument cluster goes out.
13. Read out the fault memory and, if necessary, erase it and read it again.