Lambda Control

Lambda control is integrated in ECU and monitors input signals from sensors. After input signals are amplified, output signals for differential pressure regulator are determined.

Control range of differential pressure regulator current is 0-16 mA. Mean value at which control takes place is 8 mA.

Lambda control is made inoperative by signal from ECU under these conditions: oxygen sensor not ready for operation or defective, during deceleration shut-off, under full load conditions, during acceleration enrichment or when starting engine at coolant temperatures below 60°F (15°C) until coolant temperature reaches 105°F (40°C).