SSANGYONG RODIUS 2005.07 Manual page 154

09-8
0452-01
1. IGNITION SYSTEM
This ignition system does not use a conventional distributor and coil. It uses a crankshaft
position sensor input to the Engine Control Module (ECM).
The ECM then determines Electronic Spark Timing (EST) and triggers the electronic ignition
system ignition coil.
This type of distributorless ignition system uses a "waste
distribution. Each cylinder is paired with the cylinder that is opposite it (1-6 or 2-5 or 3-4).
The spark occurs simultaneously in the cylinder coming upon the compression stroke and in the
cylinder coming up on the exhaust stroke.
The cylinder on the exhaust stroke requires very little of the available energy tofire the spark
plug.
The remaining energy is available to the spark plug in the cylinder on the compression stroke.
These systems use the EST signal from the ECM to control the EST. The ECM uses the
following information:
- Engine load (mass air flow sensor).
- Engine temperature.
- Intake air temperature.
- Crankshaft position.
- Engine speed (rpm).
ENGINE CONTROL SYSTEM
RODIUS 2005.07
spark" method of spark