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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-687 . HEATED OXYGEN SENSOR OFFSET Refer to DTC P0137 − Heated Oxygen Sensor (rear) Circuit Low Voltage . . CIRCUIT OPERATION Refer to DTC P0137 − Heated Oxygen Sensor (rear) Circuit Low Voltage . . TECHNICAL DESCRIPTION • The ECM applies an offset voltage of 0.5 volt to the heated oxygen sensor. • The ECM checks for heated oxygen sensor offset voltage. . DESCRIPTIONS OF MONITOR METHODS Heated oxygen sensor offset voltage is under speci- fied range. . MONITOR EXECUTION Continuous . MONITOR EXECUTION CONDITIONS Other Monitor (There is no temporary DTC stored in memory for the item monitored below) • Not applicable Sensor (The sensor below is determined to be normal) • Not applicable . AK900665 D-37 (B) Rear heater duct (RH) Heated oxygen AB Connector: D-37 |