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COMPONENT PARTS EC-19 < SYSTEM DESCRIPTION > [HR16DE] C D E F G H I J K L M A EC N P O Air Fuel Ratio Sensor 1 INFOID:0000000009266955 The air fuel ratio (A/F) sensor 1 is a planar one-cell limit current sen- sor. The sensor element of the A/F sensor 1 is composed an elec- trode layer, which transports ions. It has a heater in the element. lean and rich range. Together with its control electronics, the sensor The exhaust gas components diffuse through the diffusion layer at the sensor cell. An electrode layer is applied voltage, and this current relative oxygen density in lean. Also this current relative hydrocar- bon density in rich. Therefore, the A/F sensor 1 is able to indicate air fuel ratio by this electrode layer of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of about 800 °C (1,472 °F). Air Fuel Ratio Sensor 1 Heater INFOID:0000000009266956 SYSTEM DESCRIPTION The ECM performs ON/OFF duty control of the A/F sensor 1 heater corresponding to the engine operating condition to keep the temperature of A/F sensor 1 element within the specified range. Battery Current Sensor INFOID:0000000009496745 The battery current sensor is installed to the battery cable at the neg- ative terminal. The sensor measures the charging/discharging cur- rent of the battery. The power generation voltage variable control enables fuel con- sumption to be decreased by reducing the engine load which is caused by the power generation of the generator. Based on sensor signals, ECM judges whether or not the power generation voltage variable control is performed. When performing the power generation voltage variable control, ECM calculates the target power generation voltage based on the sensor signal. And ECM sends the calculated value as the power generation command value to IPDM E/R. CAUTION: Never connect the electrical component or the ground wire directly to the battery terminal. The con- nection causes the malfunction of the power generation voltage variable control, and then the battery discharge may occur. JMBIA0112GB PBIB3354E Sensor Input Signal to ECM ECM function Actuator Camshaft position sensor (PHASE) Engine speed Air fuel ratio (A/F) sensor 1 Air fuel ratio (A/F) sensor 1 Mass air flow sensor Amount of intake air JPBIA3262ZZ |