Ignition Timing Modification Signals

- Ignition Timing Modification Request
- Ignition Timing Map Shift
- Ignition Timing/Fuel Injection Cutout Request







The ECM receives various input signals from other control modules that will:
- Modify ignition timing (advance/retard)
- Select alternate ignition timing MAP
- Activate ignition/injection fadeout.
- Cancel ignition/injection.