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INSPECTION AND ADJUSTMENT EC-587 < BASIC INSPECTION > [VQ40DE FOR USA AND CANADA] C D E F G H I J K L M A EC N P O Yes or No Yes >> GO TO 14. No >> 1. Follow the instruction of Idle Air Volume Learning. 2. GO TO 4. 14. CHECK TARGET IDLE SPEED AGAIN With CONSULT 1. Start engine and warm it up to normal operating temperature. 2. Read idle speed in “DATA MONITOR” mode with CONSULT. EC-588, "Idle Speed and Ignition Timing Check" Without CONSULT 1. Start engine and warm it up to normal operating temperature. EC-588, "Idle Speed and Ignition Timing Check" OK or NG OK >> GO TO 15. NG >> GO TO 17. 15. CHECK IGNITION TIMING AGAIN 1. Run engine at idle. 2. Check ignition timing with a timing light. EC-588, "Idle Speed and Ignition Timing Check" OK or NG OK >> GO TO 19. NG >> GO TO 16. 16. CHECK TIMING CHAIN INSTALLATION Check timing chain installation. Refer to . OK or NG OK >> GO TO 17. NG >> 1. Repair the timing chain installation. 2. GO TO 4. 17. DETECT MALFUNCTIONING PART Check the following. • Check camshaft position sensor (PHASE) and circuit. Refer to • Check crankshaft position sensor (POS) and circuit. Refer to OK or NG OK >> GO TO 18. NG >> 1. Repair or replace. 2. GO TO 4. 18. CHECK ECM FUNCTION 1. Substitute with a non-malfunctioning ECM to check ECM function. (ECM may be the cause of the incident, although this is rare.) M/T: 625 ± 50 rpm (in Neutral position) A/T: 625 ± 50 rpm (in P or N position) M/T: 625 ± 50 rpm (in Neutral position) A/T: 625 ± 50 rpm (in P or N position) M/T: 15 ± 5° BTDC (in Neutral position) A/T: 15 ± 5° BTDC (in P or N position) BBIA0531E |