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Home >> Ford >> 1990 >> Bronco II 4WD, Standard, M5OD-R1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Quick Test >> Step 2.0 Vehicle Prep & Equipment Hookup >> VOM Setup
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VOM Setup

1)  Turn ignition key OFF. Set VOM at 0-15V DC range and connect positive lead of VOM to positive battery terminal.

2)  Connect negative VOM lead to Self-Test Output (STO) terminal on Self-Test connector. See Figure. Connect timing light. When instructed, KOEO Self-Test is activated by connecting jumper wire from Self-Test Input (STI) pigtail to Signal Return terminal (ground) of Self-Test connector with the ignition ON.