Fault, DTC Possible causes, elimination, notes · Test point 26

911 Carrera (996) Tiptronic diagnosis Fault, DTC Possible causes, elimination, notes Test point 26 Torque converter clutch fault Faulteffect: Open circuit/short Torque converter clutch alwaysopen.to ground DTC 70 1. Check ATF level (refer to Service No. 37 02 35) and erase fault memory. 2. Perform a test drive and read out the fault memory. Note Diagnosisconditionsfor fault detection are: Torque converter clutch activated. -No engine speed fault, spider shaft speed fault, transmissionratio fault or pressure regulator 4 fault entered as present. Gear4 or 5. No shifting operationtaking place. 3. If the fault recurs after the test drive and no other faults are stored, the following possible faults may be present: Electrical activation of pressure regulator 4 not OK (diagnostictrouble codes 83 and 11 present?). -Mechanical defect in pressure regulator 4. -ATF supply to the torque converter clutch not OK Converterdefective. 37 01 Diagnosis/Troubleshooting, Tiptronic 37 -D 41 Printed in Germany -8, 1998 99637D21