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ON BOARD DIAGNOSTIC (OBD) SYSTEM EC-725 < SYSTEM DESCRIPTION > [VK50VE] C D E F G H I J K L M A EC N P O *: Leaving cooling fan OFF with CONSULT-III while engine is running may cause the engine to overheat. WORK SUPPORT MODE Work Item *: This function is not necessary in the usual service procedure. DTC & SRT CONFIRMATION MODE SRT STATUS Mode For details, refer to EC-705, "Diagnosis Description" . SRT WORK SUPPORT Mode This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status. DTC WORK SUPPORT Mode INT V/T ASSIGN • Engine: Return to the original non-standard condition • Change intake valve timing using CONSULT-III. If malfunctioning symptom disap- • Harness and connectors noid valve IGNITION TIM- • Engine: Return to the original non-standard condition • Timing light: Set CONSULT-III. If malfunctioning symptom disap- • Perform Idle Air Volume Learning. TEST ITEM CONDITION JUDGMENT CHECK ITEM (REMEDY) WORK ITEM CONDITION USAGE IDLE AIR VOL LEARN • The idle air volume that keeps the engine speed within the specified range is memorized in ECM. When learning the idle air volume EVAP SYSTEM CLOSE Close the EVAP canister vent control valve in order to make ° C (32 ° F). • No vacuum and no high pressure in EVAP system ° C (32 ° F). • Within 10 minutes after starting “EVAP SYSTEM CLOSE” the condition except above, CONSULT-III will discontinue When detecting EVAP vapor leak FUEL PRESSURE RELEASE • Fuel pump will stop by touching “START” during idling. Crank a few times after engine stalls. When releasing fuel pressure from SELF-LEARNING CONT • The coefficient of self-learning control mixture ratio returns to the original coefficient. When clearing mixture ratio self- EXH V/T CONTROL LEARN • In this mode, operation to learn exhaust valve timing con- trol solenoid valve characteristic. When learning the exhaust valve VIN REGISTRATION • VIN can be registered in ECM. When registering VIN in ECM VVEL POS SEN ADJ PREP • Use this item only when replacing VVEL actuator sub as- sembly. • Ignition switch ON and engine stopped When adjusting VVEL control TARGET IDLE RPM ADJ* • Idle condition When setting target idle speed TARGET IGN TIM ADJ* • Idle condition When adjusting target ignition tim- |