chevrolet Workshop Repair Guides

Chevrolet Workshop Service and Repair Manuals

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Assembly Line Diagnostic Link (ALDL) Connector <--> [Data Link Connector] > < Coolant Temperature Sensor/Switch (For Computer)|Specifications|Page 3530

K 1500 Truck 4WD V6-262 4.3L (1991)

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Reference Signal: Description and Operation

 Crank Signal

The ECM/PCM 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.

Assembly Line Diagnostic Link (ALDL) Connector <--> [Data Link Connector] > < Coolant Temperature Sensor/Switch (For Computer)|Specifications|Page 3530