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Home >> Merkur >> 1986 >> XR4Ti Automatic >> Repair and Diagnosis >> Engine Performance >> System >> EEC IV System >> Operation >> Inputs >> Self-Test Input (STI)
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Self-Test Input (STI)

Self-Test Input (STI) trigger is a wire (pigtail) near SELF-TEST connector. It is used to activate SELF-TEST. SELF-TEST procedures are built into EEC-IV control module so system can display service codes for diagnosis of intermittent problems.

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