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TROUBLE DIAGNOSIS - SPECIFICATION VALUE EC-83 < COMPONENT DIAGNOSIS > [QR25DE] C D E F G H I J K L M A EC N P O >> GO TO 8. 8. CHECK “A/F ALPHA-B1” 1. Start engine. 2. Select “A/F ALPHA-B1” in “DATA MONITOR (SPEC)” mode, and make sure that each indication is within OK or NG OK >> INSPECTION END NG >> GO TO 9. 9. PERFORM POWER BALANCE TEST 1. Perform “POWER BALANCE” in “ACTIVE TEST” mode. 2. Make sure that the each cylinder produces a momentary engine speed drop. OK or NG OK >> GO TO 12. NG >> GO TO 10. 10. DETECT MALFUNCTIONING PART 1. Check the following below. - Ignition coil and its circuit (Refer to EC-382, "Component Description" .) - Fuel injector and its circuit (Refer to EC-375, "Component Description" .) - Intake air leakage - Low compression pressure (Refer to .) 2. If NG, repair or replace the malfunctioning part. >> GO TO 11. 11. CHECK “A/F ALPHA-B1” 1. Start engine. 2. Select “A/F ALPHA-B1” in “DATA MONITOR (SPEC)” mode, and make sure that each indication is within OK or NG OK >> INSPECTION END NG >> GO TO 12. 12. CHECK A/F SENSOR 1 FUNCTION Perform all DTC Confirmation Procedure related with A/F sensor 1. EC-138, "DTC Confirmation Procedure" . • For DTC P0131, refer to EC-142, "DTC Confirmation Procedure" . • For DTC P0132, refer to EC-145, "DTC Confirmation Procedure" . • For DTC P0133, refer to EC-148, "DTC Confirmation Procedure" . EC-363, "DTC Confirmation Procedure" OK or NG OK >> GO TO 15. NG >> GO TO 13. 13. CHECK A/F SENSOR 1 CIRCUIT Perform Diagnostic Procedure according to corresponding DTC. >> GO TO 14. 14. CHECK “A/F ALPHA-B1” 1. Start engine. 2. Select “A/F ALPHA-B1” in “DATA MONITOR (SPEC)” mode, and make sure that indication is within the OK or NG |