|
|
EC-454 < DTC/CIRCUIT DIAGNOSIS > [VQ35DE] VARIABLE INDUCTION AIR SYSTEM Without CONSULT 1. Stop engine and disconnect vacuum hose connected to power valve actuator 2. 2. Disconnect VIAS control solenoid valve 1 harness connector. 3. Start engine. 4. Rev engine quickly up to approximately 5,000 rpm. 5. Check vacuum existence under the following conditions. Is the inspection result normal? YES >> Repair or replace power valve actuator 2. Refer to EC-14, "ENGINE CONTROL SYSTEM : Com- . NO >> GO TO 7. 7. CHECK VACUUM HOSE 1. Stop engine. 2. Check vacuum hose for crack, clogging, improper connection or disconnection. Refer to EC-45, "VARIABLE INDUCTION AIR . Is the inspection result normal? YES >> GO TO 8. NO >> Repair hoses or tubes. 8. CHECK VIAS CONTROL SOLENOID VALVE 2 Check VIAS control solenoid valve 2. Refer to EC-393, "Component Inspection" . Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-49, "Intermittent Incident" . NO >> Replace VIAS control solenoid valve 2. Refer to EC-14, "ENGINE CONTROL SYSTEM : Compo- VIAS S/V 2 Vacuum ON Existed OFF Not existed Condition Operation Idle Existed Rev engine quickly up to approximately 5,000 rpm Not existed SEF109L |