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Home >> Peugeot >> 1988 >> 505 STI >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - LH-JETRONIC >> Testing >> Component Testing >> Main Relay Trigger Circuit
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Main Relay Trigger Circuit

Connect voltmeter between pin No. 11 and pin No. 21 of fuel injection ECU connector. Voltmeter should indicate at least 12 volts. If reading is incorrect, check circuit continuity. If circuit continuity is okay, check main relay.

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