Vacuum Diaphragm For Wastegate Bypass Regulator Valve, Checking

Vacuum Diaphragm For Wastegate Bypass Regulator Valve, Checking

Test requirements
- For vehicles with automatic transmission, selector lever must be in -P-.
- No leaks on intake or exhaust side.
- Coolant temperature must be at least 80 degrees C. Diagnostic mode 1: Check measured values; PID 5, Coolant temperature. Diagnostic Mode 1: Check Measured Values

Test sequence







- Disconnect connector -2- at Wastegate Bypass Regulator Valve -N75- (-1-).







- Bring engine 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.
- Erase DTC memory of Engine Control Module (ECM). Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

If operating rod does not move despite freely moving lever:
- Replace turbocharger.
- Erase DTC memory of Engine Control Module (ECM). Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes