NANO

262 ENGINE 273 MPFI LAMBDA (OXYGEN) SENSOR Working Principle: The sensor consists of an insulating tube made up of a special ceramic material (catalyst) which is to be heated by heater supply. It is placed into the exhaust manifold. When heated above 350 °C, it delivers an output signal between +100 mv (lean exhaust gas) and +80 mv (rich exhaust gas). The output signal (air to fuel ratio signal) of this sensor is given to the ECU (as a function of varying air/fuel ratio) for adjusting the injection pulse duration to achieve the ideal air-fuel ratio. Installation Details: Installation angle must be maintained. Tightening Torque: 40 - 60 Nm Storage Conditions: Storage Temperature: -40°C to +100°C. The technical development of the sensor is aligned to a service life of 1, 60,000 Km and a maximum life time of 10 years. Pin Details: Signal ECU Connector Color Pin No. Pin No. Power Supply - 1 White (UBRMain Relay) UpstreamOxygen 14 2 White Heater Oxygen Sensor(-) 31 3 Gray Oxygen Sensor(+) 43 4 Black Pin Configuration: Type LSF 4.2 Location: Fitted between exhaust manifold and catalytic con- vertor.