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Ford
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1990
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Bronco II RWD, Standard, M5OD-R1
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Engine Performance
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Engine Controls - Tests W/Codes
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Test QC - Output State Check Not Functioning
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Test QC: Introduction
Test QC: Introduction
NOTE:
Perform this Pinpoint Test when directed by other test procedures. This test is intended to diagnose only the following:
ECA
Harness circuits (SIG RTN, STO, STI, GND, VPWR, & VREF)