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EC-266 < DTC/CIRCUIT DIAGNOSIS > [VK56VD] P0171, P0174 FUEL INJECTION SYSTEM FUNCTION WITH CONSULT-III 1. Start engine. 2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-III. 3. Check that each circuit produces a momentary engine speed drop. WITHOUT CONSULT-III 1. Start engine and let it idle. 2. Listen to each fuel injector operating sound. Is the inspection result normal? YES >> GO TO 8. NO >> Perform trouble diagnosis for fuel injector, refer to . 8. CHECK INTERMITTENT INCIDENT GI-40, "Intermittent Incident" Is the inspection result normal? YES >> Replace fuel injector. Refer to EM-49, "Removal and Installation" . NO >> Repair or replace malfunctioning part. Clicking sound should be heard. PBIB3332E |