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Home >> Porsche >> 2000 >> Boxster Base, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission Controls, Case - Diagnosis >> Tiptronic diagnosis >> Fault overview >> Test point 20 >> Possible causes, elimination, notes

Possible causes, elimination, notes

NOTE: The function of the kick-down switch can be tested with the Porsche System Tester 2 (Input signals/Kick-down).
  1. Test function of the switch with the Tester.
    NOTE: As the accelerator pedal box must not be opened, the complete box must be replaced if the kick-down switch is defective.
  2. Check wire from control module connector pin 18 to the kick-down switch for short to ground.

    Nominal value:

    1. Accelerator pedal in idle position (kick-down switch open) = ohm
    2. Accelerator pedal to the stop (kick-down) = 0 ... 5 ohm 
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