Automatic Transmission/Transaxle

The Tiptronic A50/01 automatic transmission is equipped with a diagnosis system. Detected faults in monitored components are stored in the control unit memory. The control unit will evaluate the information and differentiate between 26 faults. These detected faults can be checked by connecting system tester 9288 to the the 19 pin diagnostic connector and by following the tester manufacturers instructions. The fault codes are as follows:
Fault Code 1: Voltage, control unit.
Fault Code 2: Voltage, drive links.
Fault Code 3: Voltage, sensors.
Fault Code 4: Speed signal, DME control unit.
Fault Code 5: Load signal, DME control unit.
Fault Code 6: Throttle plate potentiometer.
Fault Code 7: Change of dwell angle.
Fault Code 8: Solenoid valve 1.
Fault Code 9: Solenoid valve 2.
Fault Code 10: Solenoid valve, torque converter clutch.
Fault Code 11: Pressure regulator.
Fault Code 12: Selector switch transmission.
Fault Code 13: Speed sensor.
Fault Code 14: Transmission temperature sensor.
Fault Code 15: Transmission selector switch.
Fault Code 16: Faulty control unit.
Fault Code 17: Faulty control unit.
Fault Code 18: Faulty control unit.
Fault Code 19: Downshift fault.
Fault Code 20: Rev. limiter.
Fault Code 21: Manual program switch.
Fault Code 22: Tip switch, up &/or downshifting.
Fault Code 23: Kickdown switch.
Fault Code 24: Transverse accel. sensor.
Fault Code 25: Speed signal 1, ABS control unit.
Fault Code 26: Oil cooler blower relay.