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Home >> Volvo >> 1983 >> 242 GLT, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - BOSCH LH >> Description >> System Relay
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System Relay

The system relay is located on the firewall under the dash, next to the fuel pump relay. This relay provides current to the electronic control unit. It is energized during filament burn off after the ignition has been switched off.