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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-269 . CIRCUIT OPERATION • A voltage corresponding to the oxygen concen- tration in the exhaust gas is sent to the PCM (ter- • Terminal No. 2 of the right bank heated oxygen sensor (rear) is grounded with PCM (terminal No. . TECHNICAL DESCRIPTION • The output signal of the right bank heated oxygen sensor (front) is compensated by the output sig- • The PCM checks for an open circuit in the right bank heated oxygen sensor (rear) output line. . DESCRIPTIONS OF MONITOR METHODS age stays low when air/fuel ratio is forced to be . MONITOR EXECUTION . MONITOR EXECUTION CONDITIONS (Other Other Monitor (There is no temporary DTC stored in memory for the item monitored below) • Heated oxygen sensor heater (front) monitor • Heated oxygen sensor heater (rear) monitor • Air/fuel ratio feedback monitor Sensor (The sensor below is determined to be normal) • Mass airflow sensor • Engine coolant temperature sensor • Intake air temperature sensor • Barometric pressure sensor . AK303063 THROTTLE BODY RIGHT BANK CONNECTOR: B-08 B-08 (GR) AB AK303013 CONNECTORS: B-21, B-22 PCM AB AIR CLEANER B-22 (B) B-21 (B) |