Oxygen Sensor (Lambda Sensor) - ECU Master EMU User Manual

TPS sensor should be connected as follows:

Oxygen sensor (lambda sensor)

Lambda sensor allows the determination of the composition of fuel-air mixture. EMU device
supports both narrowband and wideband sensors (Bosch LSU 4.2) The selection of the sensor is
done in the set of parameters Oxygen Sensor (Sensor Type). In case of narrowband sensor, no
further configuration is required. In case of LSU 4.2 probe, you should choose the fuel type (AFR
value depends on it), and set the Rcal value (this is the value of sensor's calibration resistor and it
can be measured with ohmmeter (ranges from 30-300 ohms) between pins of 2 and 6 of LSU 4.2
sensor connector).
Incorrect Rcal value will cause false readings of the lambda sensor!
PARAMETR
Sensor type
EMU
B23
B12
B18
TPS sensor wiring diagram
OPIS
Narrow band - Both 1 and 4 wire sensor can be used. This type of
sensor operates only near stoichiometric mixture (Lambda = 1)
Wide band - For this type of sensor, Bosch LSU 4.2 must be used.
Accurate Rcal value should be entered for correct measuring results.
Rcal resistance can be measured on terminals 2 and 6 of wide band
sensor. Correct Rcal value should be in 30-300 ohm range.
External controller - Should be selected when external sensor
+5V
Out
TPS
GND
WARNING !
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