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Home >> BMW >> 1999 >> 323i 2D Convertible, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Performance DME 7.2 - Overview >> DME 7.2 >> New Or Modified Output Control Functions >> Fuel Pump Relay Control

Fuel Pump Relay Control

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ME 7.2 controls the fuel pump relay as with previous systems with regard to engine speed input for continual activation of the relay.

When MRS III is incorporated into production vehicles (SOP 3-99) the ME 7.2 will also switch off the fuel pump relay when an airbag is activated as an additional safety function.

Fig 1: Fuel Pump Relay Control System Diagram
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