총 비용
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공임
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부품비
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소요 시간
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2026. 7. 27. 작업
난이도 & 준비물
증상
1997 Ford F350 7.3L 2WD, PCM 부품번호 F6TF-12A650-AYG. 배터리 방전으로 인해 코드 없이 PCM 진단 필요. PCM을 차량에서 분리하여 멀티미터로 진단할 수 있는 회로도/스키마 찾음. 진단 장비로 코드 지우기 시도했으나 PCM과 통신 불가.
처리 내용
PCM은 차량 외부에서 복잡한 시뮬레이션 장비 없이 진단 불가능. PCM을 불량으로 판정하기 전에 확인사항: 1) PCM을 차량에 연결한 상태에서 모든 전원과 접지를 PCM 단자에서 직접 검증 (다수의 전원/접지 존재). 2) DLC에서 PCM으로 가는 통신선(CommunicationLine) 연속성 확인. 3) 시동에 필요한 모든 신호 검증. 4) PCM이 인젝터 제어 신호를 출력하는지 확인. 단선된 배선이 많은 경우의 원인이 될 수 있으므로 모든 배선과 커넥터를 꼼꼼히 점검하고 PCM 교체 전에 이 모든 항목을 확인할 것.
관련 고장코드
출처
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