Tiptronic System G43

P1750

11, Voltage supply for solenoid valves and pressure regulators

Diagnosis conditions
- Ignition on

Possible fault cause
- Supply voltage less then 9 V at an engine speed greater then 1600 rpm
- Short circuit to ground or open circuit
- Tiptronic control module is faulty

Affected pins
Pin 52 and pin 53

Pin 6, pin 34, pin 54 and pin 55

Diagnosis/troubleshooting

Risk of damage to the transmission input speed sensor (turbine sensor) if the hydraulic control unit is laid on its back when removed.
- When the hydraulic control unit is removed, place it only with its bottom side on a suitable surface.

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