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Self Diagnosis - Theory & Operation (M57): Overview BMW X5 E70 facelift

Testing & Diagnostics 1 illustration

15.28.1 System Overview

Regarding the boost pressure control system the following comprehensive components are monitored

Scheme 78

Scheme 78: 15.28.1 System Overview
Scheme 78: 15.28.1 System Overview
  1. Electrical monitoring of all solenoid valves
  2. Functional response check of control flaps Control flap high pressure charger: Failure recognition with boost pressure governor deviation Control flap high pressure bypass: Failure recognition with boost pressure governor deviation
  3. Control flap wastegate (not emission relevant)

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