총 비용
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공임
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부품비
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소요 시간
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2026. 9. 1. 작업
난이도 & 준비물
증상
Toyota 5VZ 연료 시스템 진단 중 P0171 코드 확인. 서비스 매뉴얼에서 Toyota 핸드헬드 테스터로 DLC3에 연결하여 ACTIVE TEST 모드를 선택하거나, 배터리 양(+)과 음(-)단자를 연료펌프 커넥터에 직접 연결하는 단계가 필요함. 점화 스위치가 ON 위치에 있을 때 왜 이러한 추가 단계가 필요한지 궁금함.
처리 내용
연료펌프가 엔진이 꺼져 있을 때 점화 스위치 ON 상태에서 계속 작동하면 사고 발생 시 연료 라인이 끊어지더라도 펌프가 계속 작동하여 탱크의 모든 연료가 유출될 수 있기 때문. 운전자가 의식을 잃고 점화 스위치가 ON 상태로 남아있을 경우 안전 위험이 커짐. 따라서 정상 주행 시에는 점화 ON만으로 펌프가 작동하지 않도록 설계되어 있으며, 진단 목적의 능동 테스트 모드나 직접 배터리 연결이 필요한 것임.
관련 고장코드
출처
이 사례는 Stack Exchange (미국)에서 수집한 데이터입니다.
신뢰도 4.1점(높음) — 출처 소스의 전문성/검증구조를 기준으로 산정된 점수이며, 정확성을 보장하지 않습니다.
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