Lambda Control
Lambda control is integrated in ECU functions. Output signal to the differential pressure regulator used in Lambda control.
Signal range of differential pressure regulator current is 0-16 mA. A minimum signal of approximately 8 mA is needed to affect a change.
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 on or the engine running, the plug on the CIS-E control unit must not be disconnected. Voltage or current peaks can damage the control unit.