DR_F_SHORT_DR_X; Clutch F Modulation Solenoid Valve; Short circuit to another Modulation Solenoid Valve
Switch off ignition Disconnect electronics incl. transmission cables Connect transmission checking cables Measure resistance of the proportional valve against other proportional valves (pin 19 against pin 9/12/13/8/22/10/24) Nominal value: 20 - 30 ohm Check cable TCU -> transmission If you find deviations from nominal value, check wiring and component.
What you'll see
No driver-visible symptom recorded.
System reaction
Activate "Central Solenoid Disconnection Unit";Switch off Comfort start;
Diagnostic depth
The total current of all current regulators is higher than theoretically necessary Control frequency is higher than maximum permitted control frequency; One AIM switched on or both AIM switched on that have positive feedback
Transmission shifts to neutral (gear loss) Retarder is no longer available;