In order to transfer the ignition pulse of the first cylinder in the firing order to the ignition input of the DetCon, the ignition sensor unit (ISU) is installed between the ignition output of the first cylinder and the primary side of the ignition coil of the first cylinder. The jumper with the designation Load Resistance must not have been removed.
Position Load Resistance Jumper The jumper Load Resistance changes the input resistance of the ignition input.
It is on the upper left of the device |
If not all cylinders are fitted with knocking sensors, the ignition sensor unit is mounted on the cylinder on which the first knocking sensor is mounted.
Principle Circuit Diagram
Ignition |
Ignition output |
Ignition sensor |
Primary side of ignition coil |
Ignition coil |
Connections on the Ignition Sensor Unit
No. |
Connection |
DetCon ignition input (Timing1, black) |
|
DetCon ignition input (Timing2, brown) |
|
Not used |
|
Primary side of ignition coil of first cylinder |
|
Ignition controller ignition output of the first cylinder |
Connections on the DetCon
The ignition sensor unit is connected to the DetCon via the connector Ignition Pulse.