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Home >> Buick >> 1988 >> Reatta >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Functional Check >> Chart B4 Main Relay Circuits >> Main Relay Coil Circuit
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Main Relay Coil Circuit

The main relay coil is energized by means of a 12-volt EBCM output on pin No. 8 on circuit No. 855. The EBCM supplies 12 volts on pin No. 8 only after the Ignition Enable input has been received on pin No. 2. The main relay is grounded through circuit No. 450.