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 is 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).
CAUTION:
With ignition turned on or the engine running, the plug on the CIS-E control unit must not be disconnected. Voltage or current peaks can destroy the control unit.