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Neutralization system
The effectiveness of the system of neutralization is below a threshold level (P0420) PCM unit compares the number of inversions of the front and rear oxygen sensors heated for a predetermined time. The PCM controls the number of inversions of the rear sensor for a given number of inversions of the front of the sensor, when the following conditions. The PCM detects the inversion ratio: - Engine speed - 1410-3000 min -1 (models with manual transmission); - Engine speed - 1281-3000 min -1 (model with automatic transmission); - Design load of 15-50% *. If the ratio inversions - below the threshold, the PCM determines that the operation of the system of neutralization deteriorated.
* The maximum calculated value of the load varies depending on the engine speed
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