ME-SFI two-sensor control, function - GF07.61-P-3020AM
ENGINE 113.990 in MODEL 211, 219
ENGINE 113.991 in MODEL 215, 220
ENGINE 113.992 in MODEL 230 up to Model Year 2008 /AEJ 07
ENGINE 113.993 in MODEL 463 up to 31.5.12
ENGINE 113.995 in MODEL 230 up to Model Year 2008 /AEJ 07
The ME engine control unit determines the lambda mean value from signals from the O2
sensors downstream of TWC. This value is compared with a stored value for optimum exhaust emissions.
If the deviation is too large after a number of measurements, a correction variable (delay time) is determined for the lambda control.
The correction variable (value for new O2 sensor upstream TWC approx. 0) makes it possible to compensate for aging of the O 2 sensors upstream of TWC within certain limits. If the correction value exceeds the specified limit value, the O 2 sensors upstream of the catalytic converter must be replaced.
The correction values are map-controlled and are implemented by the ME control unit by adapting the fuel injection.
If the limit value is exceeded or the plausibility check of the O2
sensor signal turns out negative, the engine diagnosis indicator lamp or in the case of
the CHECK ENGINE indicator lamp lights up.
Exceeding a limit is stored in the fault memory and can be read out and deleted using STAR DIAGNOSIS.
The effect of the firewall catalytic converters is monitored based on the O2
sensor signals downstream of TWC.
| Fuel injection valve, location/task/design/function | GF07.03-P-5004KE | ||
| O2 sensors, location/task/design/function | GF07.04-P-4103AM | ||
| ME-SFI control unit, location/task/design/function | GF07.61-P-5000AM | ||
| Exhaust system, location/task/design/function | GF49.00-P-2000AM | ||
| Three-way catalytic converter, location/task/design/function | GF49.10-P-3002AM | ||
| "CHECK ENGINE" indicator lamp, location/task/function | At |
GF54.30-P-4101AM | |
| Engine diagnosis indicator lamp - location/task/function | Except |
GF54.30-P-4102AM |