Vacuum Diaphragm For Wastegate Bypass Regulator Valve, Checking

Vacuum Diaphragm For Wastegate Bypass Regulator Valve, Checking

Recommended special tools and equipment e.g.:
- VAG1526 multimeter orVAG1715 multimeter
- VAG1594 connector test kit

Test requirement
- Coolant temperature must be at least 80 degrees C, Diagnostic mode 1: Check measuring values; PID 5, Coolant temperature. Diagnostic Mode 1: Check Measuring Values

Test sequence







- Disconnect connector -2- at Wastegate Bypass Regulator Valve -N75-.







- Start engine and increase speed to maximum RPM by depressing accelerator pedal suddenly. Operating rod -2- for wastegate bypass regulator valve must move.

If operating rod does not move:
- Check lever for wastegate bypass regulator valve -1- for ease of movement. If rusted solid, replace turbocharger.

If operating rod does not move despite freely moving lever:
- Check Wastegate Bypass Regulator Valve -N75-. (Throughput in hose from turbocharger via valve to vacuum diaphragm with connector disconnected). Wastegate Bypass Regulator Valve, Checking

If solenoid valve is OK:
- Replace turbocharger