|
|
TROUBLE DIAGNOSIS - SPECIFICATION VALUE ECM-141 < DTC/CIRCUIT DIAGNOSIS > [MR20DD] C D E F G H I J K L M A ECM N P O 8. CHECK “A/F ALPHA-B1” 1. Start engine. 2. 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 >> INSPECTION END NO >> 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. Is the inspection result normal? YES >> GO TO 12. NO >> GO TO 10. 10. DETECT MALFUNCTIONING PART Check the following. Ignition coil and its circuit (Refer to ECM-385, "Component Function Check" 2. Fuel injector and its circuit (Refer to ECM-372, "Component Function Check" 3. Intake air leakage 4. Low compression pressure (Refer to Is the inspection result normal? YES >> Replace fuel injector, refer to EM-164, "Removal and Installation" , and then GO TO 11. NO >> Repair or replace malfunctioning part and then GO TO 11. 11. CHECK “A/F ALPHA-B1” 1. Start engine. 2. 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 >> INSPECTION END NO >> GO TO 12. 12. CHECK A/F SENSOR 1 FUNCTION Perform all DTC CONFIRMATION PROCEDURE related with A/F sensor 1. . • For DTC P0131, refer to . • For DTC P0132, refer to . • For DTC P014C, P014D, refer to . Is any DTC detected? YES >> GO TO 15. NO >> 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 “SPEC” of “DATA MONITOR” mode, and make sure that the each indication is Is the measurement value within the SP value? YES >> INSPECTION END NO >> GO TO 15. 15. DISCONNECT AND RECONNECT ECM HARNESS CONNECTOR |