Starting ignition timing

Fig 1: Starting Ignition Timing - Communication Diagram

Courtesy of SAAB-SCANIA OF AMERICA, INC.

This function is used when starting the engine.

Starting ignition timing will be active from when the engine is stationary until the engine speed reaches 500 RPM. The starting ignition timing depends on the engine speed and coolant temperature. Normal starting ignition timing when the coolant temperature is 20°C is 6 degrees BTDC.