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P0506 ISC SYSTEM EC-301 < DTC/CIRCUIT DIAGNOSIS > [MR20DD] C D E F G H I J K L M A EC N P O Diagnosis Procedure INFOID:0000000010775194 1. CHECK DTC PRIORITY If DTC P0506 is displayed with other DTC, first perform the trouble diagnosis for other DTC. Is applicable DTC detected? YES >> Perform diagnosis of applicable. Refer to . NO >> GO TO 2. 2. CHECK INTAKE AIR LEAK 1. Start engine and let it idle. 2. Listen for an intake air leak after the mass air flow sensor. Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace malfunctioning part. 3. REPLACE ECM 1. Stop the engine. 2. Replace ECM. Refer to EC-430, "Removal and Installation" >> INSPECTION END |