Like the Corsa-B X 10 XE engine, the X 12 XE engine is also equipped with the Motronic M 1.5.5 engine management system.
The Motornic M 1.5.5 also has a composite-technology engine control unit (1), as well as an ignition module with 4 single ignition coils (2) and integrated spark plug connectors.
A description of the Motronic M 1.5.5 components is found in "New Technical Features MY '97 1/2" in conjunction with the X 10 XE engine.
Block Diagram
| 15 | Ignition ON (terminal 15) |
|---|---|
| 30 | Battery positive (terminal 30) |
| 31 | Ground (terminal 31) |
| H30 | Engine telltale |
| K43 | Injection pump relay |
| K44 | Fuel pump relay |
| K60 | AC compressor relay |
| K61 | Engine control unit |
| K85 | AT control unit |
| K117 | Immobiliser control unit |
| K141 | EPS control unit |
| L2 | Ignition module |
| P/N | AT selector lever |
2.1.12.1 Block Diagram
| P7 | Tachometer |
|---|---|
| P30 | Coolant temperature sensor |
| P32 | Oxygen sensor |
| P34 | Throttle valve potentiometer |
| P35 | Crankshaft pulse pick-up |
| P44 | Hot film mass air flow meter |
| P46 | Knock sensor |
| P47 | Camshaft sensor |
| S20 | Pressure switch (AC) |
| S109 | Speed increase switch (AC) |
| Y7 | Fuel injection valve |
| Y18 | Exhaust gas recirculation valve |
| Y26 | Throttle valve adjuster |
| Y34 | Tank vent valve |
| X13 | Diagnostic plug |