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EC-22 < BASIC INSPECTION > [VQ40DE] INSPECTION AND ADJUSTMENT 2. Check idle speed. EC-24, "Idle Speed and Ignition Timing Check" . OK or NG OK >> GO TO 10. NG >> GO TO 8. 8. DETECT MALFUNCTIONING PART Check the following. . • Check crankshaft position sensor (POS) and circuit. Refer to OK or NG OK >> GO TO 9. NG >> 1. Repair or replace. 2. GO TO 4. 9. CHECK ECM FUNCTION 1. Substitute with a non-malfunctioning ECM to check ECM function. (ECM may be the cause of the incident, 2. Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to SEC-8, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement" (with Intelligent Key system) or SEC-124, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (without Intelligent Key system). >> GO TO 4. 10. CHECK IGNITION TIMING 1. Run engine at idle. 2. Check ignition timing with a timing light. EC-24, "Idle Speed and Ignition Timing Check" . OK or NG OK >> GO TO 19. NG >> GO TO 11. 11. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING 1. Stop engine. 2. EC-25, "Accelerator Pedal Released Position Learning" >> GO TO 12. 12. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING Perform EC-25, "Throttle Valve Closed Position Learning" . >> GO TO 13. 13. PERFORM IDLE AIR VOLUME LEARNING EC-25, "Idle Air Volume Learning" Is Idle Air Volume Learning carried out successfully? Yes or No 625 ± 50 rpm (in P or N position) 15 ± 5 ° BTDC (in P or N position) BBIA0531E 2009 Pathfinder |