|
|
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-225 STEP 4. Test the OBD-II drive cycle. Diagnostic Function − OBD-II Drive Cycle − Procedure 4 − Heated Oxygen Sensor Monitor (2) Check the diagnostic trouble code (DTC). YES : Retry the troubleshooting. DTC P0134: Cylinder 1, 4 Heated Oxygen Sensor No Activity Detected (sensor 1) CAUTION If DTC P0134 has been set, TCL related DTC . Cylinder 1, 4 Heated Oxygen Sensor Circuit No • Refer to DTC P0130 − Cylinder 1, 4 Heated Oxy- gen Sensor (Front) Circuit • Refer to DTC P0201 − Injector Circuit-cylinder 1 . • Refer to DTC P0204 − Injector Circuit-cylinder 4 . . CIRCUIT OPERATION • Refer to DTC P0130 − Cylinder 1, 4 Heated Oxy- gen Sensor (Front) Circuit • Refer to DTC P0201 − Injector Circuit-cylinder 1 . • Refer to DTC P0204 − Injector Circuit-cylinder 4 . . TECHNICAL DESCRIPTION • The PCM effects air/fuel ratio feedback control in accordance with the signals from the cylinder 1, 4 • If the cylinder 1, 4 heated oxygen sensor (front) has deteriorated, corrections will be made by the • DTC P0134 becomes stored in memory if a fail- ure is detected in the above air/fuel ratio feed- . DESCRIPTIONS OF MONITOR METHODS voltage does not cross 0.5 volt within specified . MONITOR EXECUTION . MONITOR EXECUTION CONDITIONS (Other Other Monitor (There is no temporary DTC stored in memory for the item monitored below) • Misfire monitor Sensor (The sensor below is determined to be normal) • Mass airflow sensor • Engine coolant temperature sensor • Intake air temperature sensor • Barometric pressure sensor • Throttle position sensor . |