LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 1991 >> APV >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls (Gasoline) >> Input Devices >> Crank Signal
September 30: LEMON manuals is back up on a temporary server! Slowness is possible

Crank Signal

Crank signal is a 12-volt signal monitored by the ECM. Signal is present when ignition switch is in the START position. The ECM uses signal to determine the need for starting enrichment. ECM also cancels diagnostics until engine is running and 12-volt signal is no longer present.

scientia non olet · About LEMON Manuals