Knock control
Knock control |
If the knocking stops as a result of retarding the ignition, the timing will be restored in steps of 0.5° to what it was before.
On the other hand, if knocking persists in the same cylinder despite its ignition point being retarded by 3°, the control module will retard it additionally in steps of 3° up to a maximum of 13° BTDC.
At full engine load the ignition point in all cylinders is retarded by 6° to prevent knocking. When the engine load is reduced, the ignition is restored to normal in steps of 0.5°.
Should a break in continuity occur in the knock sensor of the sensor circuit, the ignition will be retarded by 13ø in all cylinders (at engine speeds >2000 rpm) at the same time as the CHECK ENGINE lamp (MIL) lights up.