Yukon V8-350 5.7L (1992)
Reference Signal: Description and Operation
Crank Signal
NOTE: Because different models and engine applications vary in wire colors, circuit numbers, and pin numbers, the above image is a typical example.
Refer to COMPUTERS AND CONTROL SYSTEMS/SCHEMATIC AND ROUTING DIAGRAMS for specific schematic applications.
PURPOSE:
The control module uses this signal to tell when the vehicle is in the STARTING mode. This information is used to allow enrichment and cancel
diagnostics while engine is cranking.