Diagnostic conditions
NOTE:
The ATF fluid level in the transmission must be OK and the specified ATF fluid must be used. The ATF filter and cooler must not be blocked.
The following requirements are met for at least 0.5 seconds:
- Ignition on, voltage greater than 10.2 V and less than 15.5 V
- Internal Tiptronic control module function test was completed successfully
- Engine runs without malfunctions
The fault types 'Short circuit to B+ and Open circuit/short circuit to ground' are set after the following conditions occur five times:
- A short circuit to B+ causes the current measured by the Tiptronic control module to become 'greater than 1333 mA' for a duration of 100 msec.
- An open circuit/short circuit to ground causes the power switch (in Tiptronic control module) to come 'ON' and the current measured by the Tiptronic control module is 'less than 23 mA' for a duration of 100 msec.
The fault type 'Electrical fault in electric circuit' is set after the following conditions occur twice:
- Ignition on, voltage is less than 10.5 V for 500 msec.
- The current measured by the Tiptronic control module is 'less than 23 mA' or 'greater than 1333 mA' for a duration of 500 msec.