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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L> 13A-253 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: Heated Oxygen Sensor Circuit No Activity Detected (sensor 1) . Heated Oxygen Sensor Circuit No Activity • Refer to, DTC P0130 Heated Oxygen Sensor • Refer to, DTC P0201, P0202, P0203, P0204 − Injector Circuit . CIRCUIT OPERATION • Refer to, DTC P0130 Heated Oxygen Sensor • Refer to, DTC P0201, P0202, P0203, P0204 − Injector Circuit . TECHNICAL DESCRIPTION • The ECM <M/T> or PCM <A/T> effects air/fuel ratio feedback control in accordance with the sig- • If the heated oxygen sensor (front) has deterio- rated, corrections will be made by the heated • DTC P0134 is stored when abnormality of the air/fuel ratio feedback control is detected. . DESCRIPTIONS OF MONITOR METHODS not cross 0.5 volt within specified period. . MONITOR EXECUTION . AK300418 42 43 48 49 50 51 52 53 54 55 56 57 46 45 44 58 59 60 61 62 63 64 65 66 47 41 98 78 71 88 89 76 77 72 73 74 75 81 82 83 93 84 85 94 86 87 95 96 90 97 CONNECTORS: C-54, C-57 <A/T> C-57 (GR) C-54 (GR) AB C-57 HARNESS CONNECTOR: C-54 HARNESS CONNECTOR: |