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MPI - Troubleshooting 13A-75 Inspection Procedure 17 Abnormal odor, white smoke, black smoke, high CO or HC concentration when idling Probable cause Causes shown on right are suspected. D Air/fuel ratio control system malfunction D Ignition system malfunction D Fuel system malfunction D Intake and exhaust system malfunction D Exhaust gas purifier system malfunction D Improper compression pressure D Catalyst defect D Engine-ECU malfunction OK To the next page OK Check the fuel pressure. (Refer to P.13A-128.) OK MUT-II Data list No. 59: Oxygen sensor (rear) (Refer to P.13A-105.) NG Check the Code No. P0136: Oxygen sensor (rear) system. (Refer to P.13A-27.) OK MUT-II Data list No. 11: Oxygen sensor (front) (Refer to P.13A-102.) NG Check the Code No. P0130: Oxygen sensor (front) system. (Refer to P.13A-24.) OK Check for exhaust gas leaks from exhaust manifold. NG Repair OK Check the air intake from the intake hose and intake manifold. NG Repair OK MUT-II Data list No. 12: Air flow sensor D No. 13: Intake air temperature sensor D No. 21: Engien coolant temperature sensor D No. 25: Barometric pressure sensor (Refer to P.13A-102.) <Reference> Proceed to OK if all service data values are correct. Proceed to NG if there is even one abnormal service data value. NG Refer to inspections for diagnosis code of sensor showing abnormal service data. (Refer to P.13A-102.) OK Check the ignition timing. (Refer to GROUP 11 - Engine Adjustment.) NG Check the Inspection Procedure 15: Deviation of ignition interval (Refer to P.13A-73.) NO MUT-II Actuator test No. 01: No. 1 injector D No. 02: No. 2 injector D No. 03: No. 3 injector D No. 04: No. 4 injector OK: The idling state changes. D Proceed to NG if the cylinder (NG cylinder) for which the idling state did not change when injector was stopped is pinpointed. D Proceed to OK if all cylinders are OK, or if the NG cylinder cannot be pinpointed. NG Check the Code No. P0201: No. 1 injector system, P0202: No. 2 injector system, P0203: No. 3 injector system and P0204: No. 4 injector system. (Refer to P.13A-30, 31, 32, 33.) MUT-II Self-Diag code Is a diagnosis code output? YES INSPECTION CHART FOR DIAGNOSIS CODE (Refer to P.13A-12.) |