Electronic control system
2-6
Ignition timing control
This model uses group ignition in cylinders #1 and #4, and in cylinders #2 and #3.
The engine ECM switches the control mode between the start-up mode, normal operating mode,
and
ignition cutoff mode according to the signals from the sensors.
In addition, various compensations are made to determine the actual ignition timing and the energiza-
tion time of current to the ignition coil.
*1. Sensors used for compensations.
12. Engine
ECM
13. Ignition coil #1, #4
14. Ignition coil #2, #3
1. Pulser coil
3. Air pressure sensor *1
4. Air temperature sensor
5. Thermo sensor
9. Engine start switch
10. Engine shut-off switch
11. Battery
6. Knock sensor *1
7. Oil pressure switch
8. Shift position switch
2. TPS *1
1. Pulser coil
2. TPS *1
3. Air pressure sensor *1
4. Air temperature sensor
5. Thermo sensor
6. Knock sensor *1
7. Oil pressure switch
8. Shift position switch
9. Engine start switch
10. Engine shut-off switch
11. Battery
12. Engine ECM
13. Ignition coil #1, #4
14. Ignition coil #2, #3
To Next Page
