Electronic Ignition Timing Control (1.0L)

Ignition timing is calculated by PCM, based on current engine status. PCM receives signals indicating vehicle speed, manifold vacuum, throttle position and engine coolant temperature. PCM selects an appropriate, preprogrammed ignition timing adjustment. A signal is sent from PCM to ignition control module and changes ignition timing accordingly.

For ignition timing adjustment procedure, see IGNITION TIMING in appropriate ON-VEHICLE ADJUSTMENTS article. DTC P1530 can set in PCM memory during ignition timing adjustment. For test procedure with DTC set, see appropriate SELF-DIAGNOSTICS article.