LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Saturn >> 2001 >> SW2 Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Control System - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Ignition/Crank Signal
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Ignition/Crank Signal

The PCM monitors initial cranking (RPM) signal to determine when the engine is being started. This information is used for starting enrichment. If this signal is intermittent or not available, hard starting or a no-start condition will result.

scientia non olet · About LEMON Manuals