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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L> 13B-359 . 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 (front) is grounded with ECM (terminal . TECHNICAL DESCRIPTION • The left bank heated oxygen sensor (front) detects the concentration of oxygen in the • When the left bank heated oxygen sensor (front) begins to deteriorate, the heated oxygen sensor • The ECM <M/T> or PCM <A/T> varies the air/fuel mixture to make it leaner and richer, and checks . DESCRIPTIONS OF MONITOR METHODS age is over specified range. . 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 • Misfire monitor • Fuel system monitor Sensor (The sensor below is determined to be normal) • Volume airflow sensor • Engine coolant temperature sensor • Intake air temperature sensor • Barometric pressure sensor • Throttle position sensor . AK300061 LEFT BANK CONNECTOR: B-24 AB B-24 (B) AK300244 CONNECTORS: C-52, C-59 <A/T> AF PCM C-52 (GR) C-59 (GR) AK300091 CONNECTORS: C-58, C-62 <M/T> ECM AD C-58 (GR) C-62 (GR) |