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TROUBLE DIAGNOSIS - SPECIFICATION VALUE EC-157 < DTC/CIRCUIT DIAGNOSIS > [MR20DD] C D E F G H I J K L M A EC N P O NOTE: Is the measurement value within the SP value? YES >> GO TO 17. NO-1 >> Less than the SP value: GO TO 2. NO-2 >> More than the SP value: GO TO 3. 2. CHECK “B/FUEL SCHDL” Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within the Is the measurement value within the SP value? YES >> GO TO 4. NO >> More than the SP value: GO TO 19. 3. CHECK “B/FUEL SCHDL” Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within the Is the measurement value within the SP value? YES >> GO TO 6. NO-1 >> More than the SP value: GO TO 6. NO-2 >> Less than the SP value: GO TO 25. 4. CHECK “A/F ALPHA-B1” 1. Stop the engine. 2. Disconnect PCV hose, and then plug it. 3. Start engine. 4. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within Is the measurement value within the SP value? YES >> GO TO 5. NO >> GO TO 6. 5. CHANGE ENGINE OIL 1. Stop the engine. 2. Change engine oil. >> INSPECTION END 6. CHECK FUEL PRESSURE Check fuel pressure. (Refer to .) Is the inspection result normal? YES >> GO TO 9. NO-1 >> Fuel pressure is too high: Replace “fuel filter and fuel pump assembly”, refer to , and then GO TO 8. NO-2 >> Fuel pressure is too low: GO TO 7. 7. DETECT MALFUNCTIONING PART Check fuel hoses and fuel tubes for clogging Is the inspection result normal? YES >> Replace “fuel filter and fuel pump assembly”, refer to FL-12, "Removal and Installation" GO TO 8. NO >> Repair or replace and then GO TO 8. |