Camshaft adjustment function - GF07.61-P-4021F
ENGINE 104.941 /942 /943 /944 /945 /991 /992 /994 /995
ENGINE 111.921 /943 /945 /946 /947 /960 /961 /970 /973 /974 /977
ENGINE 111.942 as of 1.6.96
ENGINE 111.944 /975 as of 1.8.96
ENGINE 119.980 /981 /982 /985
ENGINE 120.982 /983
Shown on engine 119
Task
Improving idle speed, boosting torque and power output in the mid/upper engine speed/load range.
Design/function
The camshaft solenoid which is operated by the engine control module, is attached to the camshaft adjuster. The position of the inlet camshaft is altered by rotating the camshaft adjuster to "advanced" (large valve overlap) or to "retarded" (slight valve overlap - basic position).
Example of engine 120: The adjustment range of the camshaft adjuster is approx. 32° crank angle. The figures relate to drive position engaged and
moderate engine load:
| Engine speed | Position of camshaft | Camshaft solenoid | Effect on combustion |
| < 2000 rpm | "retarded" | de-energized | Reducing residual gas quantities as a result of smaller valve overlap |
| > 2000 rpm and < 4000 rpm | "advanced" | actuated | Reducing fresh gas losses |
| > 4000 rpm | "retarded" | de-energized | Improving cylinder charge by means of boost effect |
| Control module (HFM-SFI) position / task / design / function | GF07.51-P-4103D | ||
| ME-SFI control module position / task / design / function | GF07.61-P-5000F | ||
| Variable camshaft timing solenoid function | GF07.61-P-4106F | ||
| Hot film mass air flow sensor location/Function/Design/Operation | Round connector with bayonet lock | GF07.07-P-4118E | |
| 5-pin connection, intake air temperature sensor integrated | GF07.07-P-4118G | ||
| Overvoltage protection relay | Model 124, 202 up to 7/96 | GF54.10-P-4100A | |
| Relay module position / task / design / function | Voltage supply of model 170 Model 210 to 2/97 |
GF54.10-P-4033K | |
| Base module, location/function/design/function | Voltage supply of model 129, 140 | GF54.21-P-4013L | |
| Fuse and relay module | Voltage supply of model 202 as of 8/96 Model 210 as of 3/97 |
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| ETC control module, location/task | Transmission 722.6, drive position recognition | GF27.19-P-4012G |