DIGITAL ECU TUNER 3 – User Manual
VR Sensors
n case of a VR sensor connected to the ECU as
single ended
, signals should be connected to the ignition input
Ignition In
(9), and the signal’s output to
Bipolar Ignition Out
(4).
In the case of the balanced signal (differential), VR sensor should be connected to the DET3 device as
single ended
,
and connected to the car’s ECU as balanced, using both bipolar outputs.
Polarity of the sensor is crucial in case of the balanced signal. Reversed connecting will cause an inability to start
the engine or errors in controlling the ignition.
For the VR sensors, in the menu Setup/Ignition Configuration choose the Ignition Input Type:
VR Sensor
Adaptive Threshold.
(applies to the single ended sensors as well as balanced ones).
Caution!
Signals from the VR sensors should be lead by shielded wires, especially when they are
longer than 15 cm.
Page 21
www.ecumaster.com
ECU
Ignition In (9)
Bipoloar Ign. Out (5)
DET 3
VR sensor
ECU
Ignition In (9)
DET 3
Bipoloar Ign. Out (5)
Bipoloar Ign. Out Inv. (4)
VR sensor
