PL720 4WD L4-2389cc 2.4L SOHC (Z24) (1983)
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Detonation Sensor: Description and Operation
Fig. 44 Detonation control system.
This system, Fig. 44, incorporates a detonation sensor to monitor detonation in each combustion chamber and send a corresponding signal to the
control unit. The detonation control unit, located under the driver's seat, varies ignition timing to minimize detonation.