CDI idle speed, function · gf0716p2002p · Mercedes-Benz WIS

GF07.16-P-2002P

CDI idle speed, function

18.10.11

ENGINE 642.9 in MODEL 164.1 /8, 203.0 /2, 204.0 /2, 221.0 /1, 251.0 /1 up to model year 2008
/YoM 07

ENGINE 642.8 /9 in MODEL 461.3

ENGINE 642.9 in MODEL 463.3 up to 31.5.12

ENGINE 642.9 in MODEL 209.3 /4, 211.0 /2 /6, 219.3

The following are some of the functions that are active when the engine is on idle:

 Fuel supply, to provide the correct quantity of fuel in the current operating state

 Preinjection, to improve the exhaust emission values and reduce noise emissions

 Main injection: The main quantity calculated by the CDI control unit (N3/9) and supplied to the individual cylinders

 Idle speed control, to keep idle speed constant while taking account of the different variables

 Quantity regulation: The required injection quantity for idle is calculated and regulated by the CDI control unit, taking account of the different variables

 Shutoff control, to stop the engine when there is a "circuit 15 OFF" status

 Antiboil protection, to protect the engine from overheating

 Smooth running control, to ensure smooth engine operation

 Exhaust gas cleaning, to reduce exhaust emissions

 Intake port shutoff (EKAS), to improve the combustion process (except model 461)

 Preheating, to assist combustion and improve the exhaust emission values

 Maximum heating combustion: (from 1.6.07) on model 221, more engine heat is conducted into the coolant using a new combustion strategy. This improves the heating in the vehicle interior. For vehicles (not with code (228) stationary heater), this process replaces the stationary heater or heater booster (A6).

	Electrical function schematic for common rail diesel injection (CDI), idle	Model 204	PE07.16-P-2757-99FAB
	CDI fuel supply, function	Model 164.1/8, 203.0/2, 209.3/4, 211.0/2/6, 219.3, 221.0/1, 251.0/1, 461.3, 463.3	GF07.16-P-2006P
		Model 204.0/2	GF07.16-P-2006CO
	CDI preinjection, function	Model 164.1/8, 203.0/2, 209.3/4, 211.0/2/6, 219.3, 221.0/1, 251.0/1, 461.3, 463.3	GF07.16-P-2008P
		Model 204.0/2	GF07.16-P-2008CO
	CDI main injection, function	Model 164.1/8, 203.0/2, 209.3/4, 211.0/2/6, 219.3, 221.0/1, 251.0/1, 461.3, 463.3	GF07.16-P-2009P
		Model 204.0/2	GF07.16-P-2009CO
	CDI fuel low pressure circuit, function	Model 203, 209, 211, 219, 221	GF07.16-P-3001P
		Model 164, 251, 461.3, 463.3	GF07.16-P-3001GZ
		Model 204.0/2	GF07.16-P-3001CO
	CDI idle speed control, function	Model 164, 203, 209, 211, 219, 251, 461.3, 463.3	GF07.16-P-3002P
		Model 221	GF07.16-P-3002SX
		Model 204.0/2	GF07.16-P-3002CO
	CDI quantity control, function	Model 164.1/8, 203.0/2, 209.3/4, 211.0/2/6, 219.3, 221.0/1, 251.0/1, 461.3, 463.3	GF07.16-P-3004P
		Model 204.0/2	GF07.16-P-3004CO
	CDI high pressure circuit, function	Model 164.1/8, 203.0/2, 209.3/4, 211.0/2/6, 219.3, 221.0/1, 251.0/1, 461.3, 463.3	GF07.16-P-3012P
		Model 204.0/2	GF07.16-P-3012CO
	CDI engine stop control, function	Model 164, 203, 209, 211, 219, 251, 461.3, 463.3	GF07.16-P-3013P
		Model 221	GF07.16-P-3013SX
		Model 204.0/2	GF07.16-P-3013CO
	CDI antiboil protection function	Model 164.1/8, 203.0/2, 209.3/4, 211.0/2/6, 219.3, 221.0/1, 251.0/1, 461.3, 463.3	GF07.16-P-3016P
		Model 204.0/2	GF07.16-P-3016CO
	CDI smooth running control, function	Model 164.1/8, 203.0/2, 209.3/4, 211.0/2/6, 219.3, 221.0/1, 251.0/1, 461.3, 463.3	GF07.16-P-3018P
		Model 204.0/2	GF07.16-P-3018CO
	Emission control function	Model 164.1/8, 203.0/2, 204.0/2, 209.3/4, 211.0/2/6, 219.3, 221.0/1, 251.0/1, except (474) Particulate filter Model 461.3 up to model year 2010/YoM 09 except code (474) Particulate filter	GF14.00-P-3000P
		Engine 642 in model 164.1/8, 203.0/2, 209.3/4, 221.0/1, 251.0/1, 461.3, 463.3 with code (474) Particulate filter Engine 642.920 in model 211.020/220/222/620, 219.322 with code (474) particulate filter Engine 642.921 in model 211.084/089/284/289 with code (474) particulate filter Engine 642.920 in model 211.022 except code (494) USA version with code (474) particulate filter Engine 642.920 in model 211.022/222 with code (498) Japan version	GF14.00-P-3000PX
		Engine 642.920 in model 211.022 with code (494) USA version Engine 642.920 in model 211.024	GF14.00-P-3000PXU
		Model 204 0/2 with code (474) particulate filter	GF14.00-P-3000CO
	Intake port shutoff function	Model 164.1/8, 203.0/2, 209.3/4, 211.0/2/6, 219.3, 221.0/1, 251.0/1, 463	GF14.20-P-3009P
		Model 204.0/2	GF14.20-P-3009CO
	CDI glow function	Model 164, 203, 209, 211, 219, 251, 461.3, 463.3	GF15.20-P-3004P
		Model 221	GF15.20-P-3004SX
		Model 204.0/2	GF15.20-P-3004CO

Referenced documents

gf0716p2006co CDI fuel supply function
gf0716p2006p CDI fuel supply, function
gf0716p2008co CDI preinjection, function
gf0716p2008p CDI preinjection, function
gf0716p2009co CDI main injection, function
gf0716p2009p CDI main injection, function
gf0716p3001co CDI fuel low pressure circuit, function
gf0716p3001gz CDI fuel low pressure circuit, function
gf0716p3001p CDI fuel low pressure circuit, function
gf0716p3002co CDI idle speed control, function
gf0716p3002p CDI idle speed control, function
gf0716p3002sx CDI idle speed control, function
gf0716p3004co CDI quantity control, function
gf0716p3004p CDI quantity control, function
gf0716p3012co CDI high pressure circuit, function
gf0716p3012p CDI high pressure circuit, function
gf0716p3013co CDI engine stop control, function
gf0716p3013p CDI engine stop control, function
gf0716p3013sx CDI engine stop control, function
gf0716p3016co CDI boiling protection, function
gf0716p3016p CDI antiboil protection function
gf0716p3018co CDI smooth running control, function
gf0716p3018p CDI smooth running control, function
gf1400p3000co Emission control, function
gf1400p3000p Emission control function
gf1400p3000px Exhaust treatment function
gf1400p3000pxu Emission control, function
gf1420p3009co Intake port shutoff, function
gf1420p3009p Intake port shutoff, function
gf1520p3004co CDI preglow, function
gf1520p3004p CDI glow function
gf1520p3004sx CDI preglowing, function