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Home >> Volvo >> 1992 >> 940 GL, AW70 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Computerized Engine Controls >> Electronic Control Unit - Ignition (240, 740 & 940) >> Power Circuit Checks

Power Circuit Checks

Connect a voltmeter between ignition ECU pin No. 5 (Red wire on 240 or Brown wire on 740 and 940) and ground. Voltmeter should indicate 12 volts. If voltage is not present, check wire from ignition ECU connector to in-line fuse located on left shock tower (240) or check circuit between ignition ECU pin No. 5 and fuse block (740 and 940).