Application
ET3 engine
Injection system: MAGNETI MARELLI MMDCM 6LP2
Description of the ignition control unit (1135)
View of the ignition control unit from the right hand side
| terminal | designation |
|---|---|
| 1 | ignition coil N°1 control (from the engine ECU earth) |
| 2 | ignition coil N°2 control (from the engine ECU earth) |
| 3 | ignition coil N°3 control (from the engine ECU earth) |
| 4 | ignition coil N°4 control (from the engine ECU earth) |
| 5 | 12 Volts permanent for the ignition control unit |
| 6 | ignition control unit earth |
Flow chart
(1) engine speed sensor (1313)
(2) (1320) injection ECU
(3) ignition coil unit (1135)
(4) camshaft position sensor (1115)
Compact coil housing (1135)
The coils are attached to a compact box located and fastened on the cylinder head
ET3 engine
- Static ignition
- One ignition coil per cylinder, directly over the spark plug
Sparking plugs
Special features
- Flat seat ignition plugs
- Tightening torque: 2,5 daNm
Injection ECU (1320)
The coil command and power stages are incorporated into the ECU (there is no external ignition module)
Static ignition
Application: ET3 engine
The injection ECU supplies each coil firing order: 1-3-4-2
The synchronisation of ignition is achieved by the sensor of the N°1 reference cylinder
On board diagnostic system (EOBD)
NoteEOBD: European On Board Diagnosis, diagnosis of anti-pollution equipment
See chapter: function - diagnosis of depollution systems (EOBD)