Scantool Diagnostics

Engine Control
P0557 Brake Booster Pressure Sensor Circuit Low - Scantool Diagnostics

Monitor GDS Data

1. Connect GDS to DLC(Data Link Cable).
2. Warm up the engine to normal operating temperature.
3. Monitor "BVS" parameter on GDS








Fig.1) Idle Status
Fig.2) Brake pressure signal
4. Is the "BVS" parameter displayed correctly?