4 | Starting up the ECU
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Engine_Control_Unit_MS_3_Sport_GT3_Cup_Manual
Bosch Motorsport
4.2.3 Lambda Value Detection
The label LAMDET contains parameters to calibrate lambda value detection.
LAMTYPE_CW
Select the sensor type. Set to ’0’ for LSU 4.9, set ’1’ for LSU 4.9.
Keep the predefined values for other parameters.
4.2.4 Throttle-Plate Angle Detection
The label ATHDET contains parameters to calibrate throttle-plate angle detection.
ATH_UMX, ATH_UMN
Maximum and minimum accepted sensor voltage. Set to approx. 250 mV / 4750 mV. If vi-
olated, an error is set (ath_e = 1).
Check if the sensor output value ‘ath_u’ is changing when throttle is moved.
CALIBRATION
These parameters calibrate the throttle-plate angle.
ATHPOS1
Lower calibration point. Set to 0.0 %.
ATHPOS2
Full load point. Set to 100.0 %.
ATHIDLECAL
Set to desired idle ATH value.
ATH_CW
Close throttle and set ATH_CW to 1.
Open throttle fully and set ATH_CW to 2.
Set throttle to idle point and set ATH_CW to 3.
Check calibration by moving throttle.