DR_A_short circuit VPS
â–¶ How to fix
Switch off ignition; Disconnect electronics incl. transmission cables; Connect transmission checking cables; Measure resistance of the proportional valve (pin 5 against pin 13), nominal value: 10...15 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";
Diagnostic depth
Detection
The total current of all current regulators is higher than theoretically necessary Control frequency is higher than maximum permitted control frequency Current regulator indicates fault; AIM switched on
Possible cause
Transmission shifts to neutral (gear loss); Retarder is no longer available;;