Introduction to On Board Diagnostics (II)

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Fundamentals of PowertrainControl strategies & OBD IIDiagnosticsEGR Sensor /Valve ( DTCs 400-408):408):EGR sensor/ valve diagnostics areperformed for deterioration of exhaust gas flow characteristics. s. In caseof EGR flow malfunction fault code 400 is assigned. If the EGR R flow isindicating insufficient flow, fault code 401 is assigned. If the e EGR flowis indicating excessive flow, fault code 402 is assigned. If the EGRcircuit malfunction, fault code 403 is assigned. If the EGR circuit isindicating range/performance problem , fault code 404 is assigned.If the EGR sensor A circuit is indicating low value, fault code c405 isassigned. If the EGR sensor A circuit is indicating high value, fault code406 is assigned. Similar faults on sensor “B” circuit are assigned faultcodes 407, 408 respectively. EGR sensor/valve diagnostics aredescribed in detail in later section.
Fundamentals of PowertrainControl strategies & OBD IIDiagnosticsIdle air control (IAC) valve 505-507507Idle control system diagnostics areperformed for deterioration of idle air flow characteristics. In case of idle aircontrol system malfunction fault code 505 is assigned. If the idle air controlsystem is indicating lower than expected flow, fault code 506 is assigned. Ifthe idle air control system is indicating higher than expected flow f,fault code507 is assigned.
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OBD II monitors more components and
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Powertrain and EmissionControls in
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Powertrain and EmissionControl in P
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OBD II for L & MD VehiclesSTD Manua
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OBD II for L & MD VehiclesDiagnosti
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Page 117 and 118: Sensors and ActuatorsKnock sensorEm
Page 123 and 124: Secondary air valvesSensors and Act
Page 127 and 128: Functionality of PowertrainControl
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Introduction to On Board Diagnostics (II)

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