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Fuel Pump Relay Control

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