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Home >> GMC >> 1983 >> Jimmy Full Size V8-350 5.7L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Test Positions >> Ign/Crank-Ignition Switch Status
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Ign/Crank-Ignition Switch Status


The crank mode (on) position engages the starter. The SCAN displays the on/off status of the ignition switch as it is transmitted to the ECM.


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