Tiptronic diagnosis 911 Carrera (996) · Fault, DTC Possible causes, elimination, notes

Tiptronic diagnosis 911 Carrera (996) Fault, DTC Possible causes, elimination, notes Test point 7 Pressure regulators Fault effect: 1,2,3,4 Reduceddriving program. Open circuiVshort to ground, Whenthere is a short to B+ at pressure regulator 4, the torque short to B+ converter clutch is alwaysopen. DTC's 80,81,82,83 Note The pressure regulators (PR)are pressure-<:ontrolsolenoid valves. They convert an electric current into a proportional, hydraulicpressure. 1. Check pressure regulator with wiring. To do this, connect an ohmmeter to the control module connector and measure the resistance: PRI = Pin 52 and pin 5 PR2 = Pin 52 and pin 1 PR3 = Pin 52 and pin 29 PR4 = Pin 52 and pin 4 Nominal value: 5 ...10.Q 2. Check wiring from the control module connector pins 1, 4, 5 and 29 to the 16-poletransmission connector pins 3, 11, 2 and 7 for continuity,short to ground and short to B+. 3. Check the pressure regulator. To do this, remove the ATF pan, remove plug connectionfrom the pressure regulator and measure the resistance. Nominalvalue: 5 ...10 .Q Note The hydraulic control unit must be removed before the PRI (modulationpressure)can be tested. 37 -D 24 37 01 DiagnosisjTroubleshooting, Tiptronic 99637D21 Printed in Germany -8, 1998