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SEC-62 < DTC/CIRCUIT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM] P1612 CHAIN OF ECM-IMMU P1612 CHAIN OF ECM-IMMU DTC Logic INFOID:0000000009650716 DTC DETECTION LOGIC NOTE: . • If DTC P1612 is displayed with DTC U1010 (for BCM), first perform the trouble diagnosis for DTC U1010. . DTC CONFIRMATION PROCEDURE 1. PERFORM DTC CONFIRMATION PROCEDURE 1. Turn ignition switch ON. 2. Check DTC in “Self Diagnostic Result” mode of “ENGINE” using CONSULT. Is DTC detected? YES >> Go to NO >> INSPECTION END Diagnosis Procedure INFOID:0000000009650717 1. REPLACE BCM 1. Replace BCM. Refer to BCS-98, "Removal and Installation" . 2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT. Can the system be initialized and can the engine be started with registered Intelligent Key? YES >> INSPECTION END NO >> GO TO 2. 2. REPLACE ECM Replace ECM. EC-460, "Removal and Installation" . >> INSPECTION END DTC No. Trouble diagnosis name DTC detecting condition Possible cause P1612 CHAIN OF ECM-IMMU Inactive communication between ECM • Harness or connectors (The CAN communication line is open or • BCM |