Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
CDI external quantity intervention, function - GF07.16-P-3011P
ENGINE 642 in MODEL 209.3/4, 211.0/2/6, 219.3
ENGINE 642 in MODEL 461.3, 463.3
ENGINE 642 in MODEL 203.0/2 up to Model Year 8
The CDI control unit (N3/9) intervenes with an external quantity intervention if an increase or decrease on the engine speed and engine load is requested from another system. For this purpose, the CDI control unit communicates with the following control units via the Controller Area Network bus Class C (engine compartment) (CAN C):
- Electronic selector lever module control unit (N15/5) for the selector lever position
- ESP and BAS control unit (N47-5) (model 203, 209, 463) or ESP control unit (N47-5) (model 211, 219), for the message "Drive torque regulation active"
- Fully integrated transmission control, control unit (Y3/8n4), for the message "FW_HIGH", air drag and rolling resistance high (except model 461)
- ETC [EGS] control unit (N15/3), for the message "FW_HIGH", air drag and rolling resistance high (model 461)
- EIS [EZS] control unit (N73), for the message "CRASH_1", rollover event 1 (except model 461)
- EIS [EZS] control unit, for the message "COMP_ON", refrigerant compressor (A9) activated (except model 461)
The CDI control unit increases or decreases the injection quantity. In order to adapt the injection quantity, the fuel pressure in the rail is increased or decreased by the pressure regulator valve (Y74) and the quantity control valve (Y94) via the CDI control unit. At the same time the actuation time of the fuel injectors (Y76) is extended or shortened appropriately.
If the CDI control unit receives the message "CRASH_1", it interrupts the fuel supply in order to stop fuel escaping and to stop the engine.
| Component description for the crankshaft Hall sensor | B70 | GF07.04-P-6220P |
| Component description for the CDI control unit | Model 203, 209 N3/9 |
GF07.16-P-6000P |
| Model 211, 219 N3/9 |
GF07.16-P-6000T | |
| Model 463 N3/9 |
GF07.16-P-6000GZ | |
| Model 461 N3/9 |
GF07.16-P-6000GX | |
| Component description for the accelerator pedal sensor | Model 203, 209, 211, 219 B37 |
GF30.20-P-2010P |
| Model 463 B37 |
GF30.20-P-2010GZ |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.