Shift solenoid valve UK (modulation pressure) [Torque Converter Clutch Circuit Electrical]
Note. The ignition must be switched off and then switched on again in order to display an error message in the instrument cluster.
Torque converter lockup clutch [Excessive Clutch Slippage]
Friction and windage losses (slippage) in the torque converter lockup clutch are monitored. Slippage is calculated using the engine speed and engine torque CAN signals and the turbine speed of the torque converter lockup clutch.
Use the 'Actual values' menu in the Porsche System Tester II No. 9588 to check the transmission status and the actual values of the shift solenoid valves and sensors.
Note. The ignition must be switched off and then switched on again in order to display an error message in the instrument cluster.