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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L> 13B-427 . CIRCUIT OPERATION • A voltage corresponding to the oxygen concen- tration in the exhaust gas is sent to the ECM (ter- • Terminal No. 2 of the left bank heated oxygen sensor (rear) is grounded with ECM (terminal No. . TECHNICAL DESCRIPTION • The output signal of the left bank heated oxygen sensor (front) is compensated by the output sig- • The ECM <M/T> or PCM <A/T> checks for an open circuit in the left bank heated oxygen sensor . DESCRIPTIONS OF MONITOR METHODS does not change during specified go/stop opera- . 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) • Volume airflow sensor • Engine coolant temperature sensor • Intake air temperature sensor • Barometric pressure sensor . AK300058 LEFT BANK CONNECTOR: B-23 AB B-23 (GR) AK300244 CONNECTORS: C-55, C-59 <A/T> AD PCM C-55 (GR) C-59 (GR) AK300091 CONNECTORS: C-58, C-62 <M/T> ECM AD C-58 (GR) C-62 (GR) |