CRX L4-1488cc 1.5L SOHC (D15A3) MFI (1987)
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Heated Oxygen Sensor: Description and Operation
The oxygen sensor, located in the exhaust manifold, allows the ECU to maintain an ideal air/fuel ratio by measuring oxygen content in the exhaust gas
and generating a variable voltage signal which is proportional to the oxygen content. The ECU monitors these voltage signals and computes the actual
air/fuel ratio entering the engine. The ECU then adjusts injection duration in response to these signals to maintain the ideal air/fuel ratio for proper
performance and emission control.