M18A····················································································································4 注意事项··············································································································4 诊断故障注意事项······································································································4 关于拆卸和安装的注意事项······················································································4 概 述················································································································6 自动变速器(A/T)说明·································································································6 自动变速器离合器/制动器/行星齿轮工作原理······················································10 零部件功能表············································································································11 自动变速器(A/T) 诊断概述·····················································································14 车载诊断系统说明····································································································14 CAN线（控制器局域网络）通讯系统说明···························································16 原理图和线路图································································································17 AT系统线路图··········································································································17 变速器控制模块(TCM)线路图················································································18 零部件位置········································································································19 电子换档控制系统零部件位置················································································19 诊断信息和步骤································································································20 自动变速器（A/T）系统检查·················································································20 目测检查····················································································································24 故障指示灯（MIL）检查························································································25 DTC 表······················································································································25 故障诊断码（DTC）检查························································································28 故障诊断码（DTC）清除························································································29 故障保护表················································································································30 检测仪数据················································································································34 检测仪数据定义： ····································································································36 自动变速器（A/T）基本检查·················································································38 道路试验····················································································································38 手动换档道路试验····································································································40 失速试验····················································································································41 换档时滞试验············································································································42 管路压力试验············································································································43 发动机制动试验········································································································45 “P”档程试验············································································································46 自动变速器(A/T) 故障诊断·····················································································46 故障诊断码DTC P0602：控制模块编程错误························································51 故障诊断码（DTC） P0705：变速器档位传感器电路故障（PRNDL输入）··52 故障诊断码（DTC） P0707：变速器档位传感器电路电压低···························54 故障诊断码（DTC） P0711：变速器油温度传感器“A”控制范围/性能·······56 故障诊断码（DTC） P0712：变速器油温度传感器电路电压低·······················57 1 故障诊断码（DTC） P0713：变速器油温度传感器“A”回路电压高·············58 故障诊断码（DTC） P0717：输入/涡轮转速传感器“A”回路无信号···········60 故障诊断码（DTC） P0722：输出转速传感器电路无信号·······························62 故障诊断码（DTC）P0741/P0742：液力变矩器离合器（TCC）电路性能或在断 开位置卡死/液力变矩器离合器（TCC）电路接通时卡死···································64 故障诊断码（DTC）P0751/P0752/P0756/P0757：换档电磁阀有故障···············65 故障诊断码（DTC） P0961：压力控制电磁阀“A”控制电路范围/性能·······66 故障诊断码（DTC） P0962：压力控制电磁阀“A”控制电路电压低·············69 故障诊断码（DTC） P0963：压力控制电磁阀“A”控制电路电压高·············71 故障诊断码（DTC）P0973 / P0976：换档电磁阀-A控制电路电压低/换档电磁阀 -B控制电路电压低····································································································73 故障诊断码（DTC）P0974 / P0977：换档电磁阀-A (No.1) /换档电磁阀-B (No.2) 控制电路电压高········································································································75 故障诊断码（DTC） P0985：换档电磁阀“E”控制回路电压低·····················77 故障诊断码（DTC） P0986：换档电磁阀“E”控制回路电压高·····················79 故障诊断码（DTC） P1702：内部控制模块存储器校验和错误·······················81 故障诊断码（DTC） P1706：ＴＣＭ转矩请求通讯错误···································81 故障诊断码（DTC） P1722：空档控制电路2 故障（应用） ···························82 故障诊断码（DTC） P1723：档程选择开关故障···············································82 DTC P1878：液力变矩器离合器发抖····································································84 DTC P2762（欧Ⅳ）：液力变矩器离合器压力控制电磁阀控制回路/执行故障·84 DTC P2763：液力变矩器离合器压力控制电磁阀线路电压高····························86 DTC P2764：液力变矩器离合器压力控制电磁阀线路电压低····························87 DTC U0073：控制模块通信总线断开·····································································89 DTC U0100：与ECM/PCM“A”通信丢失·····························································89 变速器控制模块(TCM)及其电路检查····································································89 变速器控制模块电源及接地电路检查····································································94 修 理 说 明······································································································95 TCM自学习控制初始化···························································································96 A/T油位检查·············································································································96 自动变速器油更换····································································································96 选档杆组件················································································································97 选档杆总成拆装········································································································98 选档杆手柄安装········································································································98 选档杆检查················································································································98 选档拉索组件············································································································99 选档拉索拆卸和安装······························································································100 选档拉索调节··········································································································100 变速器档位传感器（换档开关）检查与调节······················································101 输出轴转速传感器的拆卸和安装··········································································101 输出轴转速传感器检查··························································································102 输入轴转速传感器的拆卸和安装··········································································102 输入轴转速传感器检查··························································································103 变速器油温传感器检查··························································································103 2 电磁阀（换档电磁阀，TCC电磁阀和压力控制电磁阀）拆卸和安装··············104 换档电磁阀检查······································································································107 压力控制电磁阀和TCC电磁阀检查······································································108 AT零部件················································································································112 自动变速器零部件的拆卸和安装··········································································113 自动变速器总成零部件··················································································116 自动变速器装置拆卸······························································································118 油泵组件··········································································································126 油泵的拆卸和安装··································································································127 油泵检查··················································································································128 前进档离合器零部件······················································································129 前进档离合器初步检查··························································································130 前进档离合器拆卸和组装······················································································130 前进档离合器检查··································································································133 超速离合器和滑行离合器零部件··································································134 超速离合器和滑行离合器初步检查······································································135 超速离合器和滑行离合器拆卸和组装··································································136 行星齿轮零部件······························································································141 行星齿轮工况检查··································································································142 行星齿轮的拆卸和组装··························································································142 行星轮检查··············································································································147 倒档离合器零部件··························································································148 倒档离合器初步检查······························································································149 中间轴驱动齿轮零部件··················································································153 中间轴驱动齿轮拆卸和组装··················································································154 中间轴从动齿轮零部件··················································································155 中间轴从动齿轮拆卸和组装··················································································156 阀体总成零部件······························································································158 阀体组件拆卸和组装······························································································158 差速器零部件··································································································159 拆速器拆卸和组装··································································································160 差速器检查··············································································································161 差速器壳体拆卸和安装··························································································161 技术条件··········································································································173 拧紧扭矩技术条件··································································································173 专用工具及设备······························································································174 推荐维修材料··········································································································174 专用工具··················································································································175 3 4 M18A 注意事项 诊断故障注意事项 ●在检查存储在变速器控制模块（TCM）存储器中 的诊断信息（DTC，冻结帧数据等）之前，不要 断开变速器控制模块（TCM）接头，不要从蓄电 池断开电缆，不要断开变速器控制模块（TCM） 地与发动机之间的接地线束或主保险。断开这些 连接将清除TCM存储器中存储的信息。 ●利用长安铃木检测仪或CAN通信OBD专用检测 仪可以清除和检查存储在变速器控制模块 （TCM）存储器中的诊断信息。使用之前必须认 真阅读操作说明书，并对其功能和用途十分了 解。 要区分哪个模块打开了故障指示灯（MIL）是很 难的，因为发动机控制模块（ECM）和变速器控 制模块（TCM）都要打开故障指示灯（MIL）。 所以，当故障指示灯（MIL）亮的时候，要同时 检查发动机控制模块（ECM）和变速器控制模块 （TCM）以确定故障诊断码（DTC）。 当检查变速器控制模块（TCM）以确定故障诊断 码（DTC）时，记住根据使用的检测仪，故障诊 断码（DTC）在检测仪上的显示如下。 - 长安铃木检测仪显示的DTC由变速器控制模块 （TCM）检测到。 - CAN通信OBD专用检测仪既显示由发动机控制 模块（ECM）检测到的故障诊断码（DTC）， 又显示由变速器控制模块（TCM）检测到的故 障诊断码（DTC）。 ●在检查之前必须阅读本手册00章中的 “电路维护 注意事项：00章”，并遵照说明去做。 ●变速器控制模块（TCM）的更换 - 当用已知良好的变速器控制模块（TCM）替换 时，检查全部继电器和执行装置，看其电阻值 是否符合规定要求。 不进行此项检查可能导致好的变速器控制模 块（TCM）损坏。 ● 发动机控制模块（ECM）和变速器控制模块 （TCM）的通讯是通过CAN线（控制器局域网 络）建立的。（关于发动机控制模块（ECM） 的CAN线通讯的更多详情，参见“CAN线通讯 系统说明”：M18A）。因此，处理CAN线（控 制器局域网络）通讯线要格外小心，参见 “关 于CAN线（控制器局域网络）通讯系统注意事 项：00章” 。 关于拆卸和安装的注意事项 当修理自动变速器时，需要进行在车试验以便首先 检查故障原因。 然后再判定是否需要大修。如果没有这一步就拆卸 变速器，不但不能发现故障原因而且可能引起其他 故障。浪费更多的时间。 由于自动变速器由高精度零部件构成，拆卸和组装 零部件时必须严格遵守下列事项。 ●原则上严禁拆卸阀体总成。但是可以拆卸少数零 件。当拆卸阀体组件时，确认这些零件是否可以拆 卸，参见 “阀体总成拆卸和安装”：M18A 。 ●当已经更换前进档离合器，直接档离合器，第2 档制动器和/或超速行驶档（O/D）和第2档滑行 制动器的零部件时，即：离合器片，制动圆盘， 挡圈和/或钢片；通过执行自学习控制所学到的 所有存储在变速器控制模块（TCM）存储器中的 信息内容都应当被初始化。参见 “自学习控制初 始化”：M18A 。 ●保证清洗掉变速器上的污垢以防止拆卸和安装期 间污物掉进变速器。 ●选择干净无尘的地方进行大修。 ●在钳台上放置橡胶垫防止损坏零件。 ●不应该使用工作手套或纱布（使用尼龙布或纸 巾。） ●分离壳体时，不要用螺丝刀或类似物撬，而是用 塑料锤轻轻敲打。 ●在自动变速器油（ATF）中或煤油中清洗已经拆 卸的零件（注意不要让自动变速器油（ATF）溅 到你的脸部等）并通过吹入压缩空气确保油路没 有堵塞。注意用煤油清洗离合器片，树脂垫圈和 橡胶件。 ●用新的垫片，油封和”O”形环进行更换。 ●再次装配之前用自动变速器油（ATF）涂抹滑动 和转动件。 小心： ●成组保存分总成的零部件以防弄混。 ●用清洗剂彻底清洗所有零部件并让它们 在空气中干燥。 ●使用煤油或自动变速器油为清洗剂。 ●不要使用擦布去清洁或擦干零件。 ●所有油路必须吹通并保证没有堵塞。 ●吹气时保证面部和眼睛不会溅上清洗 剂。 ●检查接触（配合）面有无不规则的地方， 如果有，去掉它们，并再次清洁。 ●装配前将新的离合片和制动片浸入变速 器油中达至少2小时. ●用新的垫片，油封和”O”形环进行更换。 ●在所有”O”形环上涂抹自动变速器油. ●当安装密封圈时，注意不要胀得过大， 发生挤压或卡住。 ●更换拆下的油封并在新油封边涂抹油 脂。 ●在安装之前，保证在所有零部件的滑动， 滚动和推力面涂上自动变速器油. 安装 后要检查各零件工作正常。 ●拧紧螺栓时必须使用扭力扳手。 零件检查和处理表 零件 检查 处理 小缺陷和毛刺 用油石去除。 深裂纹或划槽缺 陷 更换零件。 油道堵塞 用空气或铁 丝弄通 。 安装表面缺陷，残 余垫片 用油石去除 或更换零件。 铸造零 件，机加 零件 裂纹 更换零件。 轴承 转动不顺 更换。 条痕，蚀斑，缺陷， 裂纹 更换。 衬套，止 推垫圈 缺陷，毛刺，磨损， 烧蚀 更换。 裂纹或密封环变 硬 更换。 密封圈外围或侧 边磨损 更换。 油封， 垫片 活塞密封圈，油 封，垫片，等. 更换。 齿轮 裂纹，毛刺 更换。 齿轮齿磨损 更换。 花键零 件 毛刺，裂纹，扭曲 用油石处理 或更换。 卡环 磨损，裂纹，变形 更换。 不能卡住 更换。 螺纹 毛刺 更换. 损坏 更换。 弹簧 下沉，烧蚀痕迹 更换。 摩擦片 磨损，烧蚀，变形， 卡爪损坏 更换。 钢片，挡 圈 磨损，烧蚀，变形， 卡抓损坏 更换。 密封表 面（密封 唇接触 的地方） 裂纹，表面粗糙， 部分磨损，异物 更换。 5 概 述 自动变速器(A/T)说明 本自动变速器为电子控制的全自动变速器，有4个前进档和1个倒车档。液力变矩器为3元件，单级和 2相型，并装配有电子控制锁止机构。 换档装置由2组行星齿轮机构，4个片式离合器，1个片式制动器，1个带式制动器和2个单向离合器 组成。换档装置通过选择安装在地板上的换档杆的位置（“P”“R”“N”“D”“3”“2”“L”）来控制。 打滑控制锁止功能 即使是在低于液力变矩器离合器（TCC）完全接合时的转速下，对液力变矩器离合器（TCC）压力 控制电磁阀进行控制都是用来使液力变矩器离合器（TCC）打滑（稍微接合），从而提高变速器的 效率。在执行此类打滑控制的同时，施加给液力变矩器离合器（TCC）的油压力是由液力变矩器离 合器（TCC）压力控制电磁阀控制的，以便发动机转速和输入轴转速之间的差值接近规定的值。 同时，在减速期间，也要使液力变矩器离合器（TCC）滑动（稍微接合）以提升发动机的转速和扩 大燃油切断的工作范围从而实现更好的耗油率。 由于这一原因，对于自动变速器来说，绝对有必要使用适合于打滑控制的自动变速器油（ATF）。 使用规定的自动变速器油（ATF）以外的任何油类都可能引起颤动或一些其他的故障条件的出现。 6 7 1. 液力变矩器离合器（TCC） 11. 滑行离合器 21. 驱动盖板 2. 2档和4档制动带 12. 超速档离合器 22. 输入轴 3. 倒档离合器 13. 太阳轮 4. 1号单向离合器 14. 前小行星齿轮 5. 1档和倒档制动器 15. 前行星齿圈 6. 前大行星齿轮 16. 主动减速齿轮（减速齿轮） 7. 后行星齿轮 17. 驻车锁止齿轮 8. 后行星齿圈 18. 从动减速齿轮（减速齿轮） 9. 0号单向离合器 19. 油泵 10. 前进档离合器 20. 液力变矩器 技术条件 8 技术条件 规格 液力变矩器 矩率 离合器（TCC）（锁止）机构) 1.90-2.05 类型 失速扭 3-元件，1-级，2-相型机构 (带液力变矩器 油泵 统 类型 传动系 内齿型油泵 发动机驱动 类型 4前进档，1倒车档，行星齿轮类型 “P” 档 处于空档，输出轴不动，发动机可起动 “R” 档 倒车档 “N” 档 处于空档，发动机可起动 “D” 档 前进档第1档↔第2档↔第3档↔第4档自动 换档 “3” 档 前进档第1档↔第2档↔第3档←第4档自动 换档 “2” 档 前进档第1档↔第2档←第3档自动换档 档位 “L” 档 前进档第1档←第2档减速，和固定在第1档 第1档 2.807 第2档 1.479 第3档 1.000 第4档 (超速行 驶档) 0.734 传 动 比 倒档 (倒档) 2.769 圈：73 齿数： 前太阳齿轮：26 后太阳齿轮：35 前大行星齿轮：28 前小行星齿轮：19 后行星齿轮：19 前内齿圈：98 后内齿 湿型多片离合器... 4付 带式制动器... 1付 控制元件 湿型多片制动器... 1付 单向离合器... 2 付 减速比 1.018 换档装置 主减速器减速比 4.084 润滑 润滑系统 靠油泵工作的压力推进系统 冷却 冷却系统 用散热器帮助冷却 (水冷) 专用油 SUZUKI ATF 3317 or Mobil ATF 3309 9 自动变速器离合器/制动器/行星齿轮工作原理 1. 前进档离合器 8. 前行星齿圈 15. 从动减速齿轮 2. 滑行离合器 9. 前小行星齿轮 16. 输入轴 3. 0号单向离合器 10：前大行星齿轮 17. 倒档离合器 4. 超速离合器 11：太阳轮 18. 2档和4档制动器 5. 后行星齿圈 12. 行星支架 6. 后行星齿轮 13. 1号单向离合器 7. 第1档和倒档制动器 14. 主减速齿轮 功能表 零件名称 功能 2档和4档制动器 固定太阳轮； 倒档离合器 使输入轴和太阳轮啮合； 1号单向离合器 防止行星齿圈逆时针旋转（与发动机输入转向相反）； 1档和倒档制动器 固定前行星齿圈； 超速档离合器 在前进档离合器工作时，使前行星齿圈与输入轴啮合； 0号单向离合器 仅在前进档离合器工作时，防止后行星齿圈逆时针旋转 （与发动机输入转向相反）； 滑行离合器 在前进档离合器工作时，使后行星齿圈与输入轴啮合； 前进档离合器 当超速档工作时，使后行星齿圈与前行星齿圈啮合； 当滑行离合器工作时，使后行星齿圈与输入轴捏合。 10 11 零部件功能表 零件 换档杆位 置 实际档位 换档电磁 阀-A 1号 换档电磁 阀-B 2号 TCC电磁 阀 前进档离 合器 倒档离合 器 滑行离合 器 P O × × × × O R O × × × O O N O × × × × O 1档 O × × O × O 2档 O O × O × O D/3 3档 × O △ O × O 4档* × × △ O × × 2 12档档 OO O× ×× OO ×× OO L 1档 O × × O × O 零件 换档杆位 置 换档杆位 置 超速档离 合器 2档和4档 制动器 1档和倒档 制动器 1号单向离 合器 0号单向离 合器 P × × × × × R × × O × × N × × × × × 1档 × × × O O 2档 × O × × O D/3 3档 O × × × O 4档* O O × × × 2 21档档 ×× O× ×× O× OO L 1档 × × O O O O：ON X：OFF △ ：只有在液力变矩器离合器（TCC）工作时，处于ON *：仅在D档时 换档电磁阀、TCC电磁阀工作情况 换档杆位置 D/3 2 L N R P 实际档位 1档 2档 3档 4档* 1档 2档 1档空 档 倒档(＞ 7km/h) 倒档(≦ 7km/h) _ 换档电磁 阀-A（1号） O O × × O O O (--) × △ △ 换档电磁 阀-B（2号） × O O × × O × (--) O × × 电磁 阀 TCC电磁 阀 × × (O) (O) × × × × × × × O：ON X：OFF △ ：车辆停止时换档3秒后动力切断 * ：仅在D档时 (O)：仅在锁止功能起作用时工作 (--)： 不管电磁阀状态如何，档位始终在空档 阀体状态 工作 不工作 换档电磁阀-A（1号） 关闭 打开 换档电磁阀-B（2号） 关闭打开 自动换档表 下表为自动换档表，测试时应在平直路面挂D档测试。 1. 换档位置在D，3和/或2位置。 节气门开度 换档 车速km/h(mph) 备注 1档→2档 55-60（35-37） D、3、2档 大于90% 2档→3档 113-118（71-73） D、3档 3档→4档 161-165（101-102） D档 1档→2档 26-31（17-19） D、3、2档 50% 2档→3档 55-60（35-37） D、3档 3档→4档 93-98（58-60） D档 1档→2档 11-16（7-9） D、3、2档 2档→3档 25-30（16-18） D、3档 向高档换档 10% 3档→4档 43-48（27-29） D档 向低档换档 大于95% 4档→3档 142-147（89-91） D档 3档→2档 94-99（59-61） D、3档 12 2档→1档 45-51（29-31） D、3、2档 4档→3档 62-67（39-41） D档 50% 3档→2档 25-30（16-18） D、3档 2档→1档 8-13（5-8） D、3、2档 4档→3档 23-27（15-16） D档 10% 3档→2档 8-13（5-8） D、3档 2档→1档 8-13（5-8） D、3、2档 2. 锁止点在D档位置 锁止离合器状 态 节气门开度 车速km/h(mph) 备注 大于90% 126-131（79-81） D，3档 ON 50% 81-86（51-53） D，3档 10% 49-54（31-33） D，3档 100% 103-108（64-68） D，3档 50% 57-62（36-38） D，3档 3档锁止 OFF 10% 42-48（27-29） D，3档 4档（超速档） ON 大于95% 161-166（101-103） D档 13 14 50% 110-115（69-71） D档 10% 56-61（35-37） D档 95% 142-147（89-91） D档 50% 90-93（56-57） D档 锁止 OFF 10% 52-57（33-35） D档 滑行锁止点在D档 滑行锁止离合器状态节气门开度 车速km/h(mph) 备注 ON 15% 35-40（22-24） D，3档 3档 OFF 15% 32-37（20-22） D，3档 ON 15% 46-51（29-31） D档 4档 OFF 15% 43-48（27-29） D档 自动变速器(A/T) 诊断概述 本车装配有电子变速器控制系统，它能适当 地控制自动换为高档和自动换为低档的时 间，以及液力变矩器离合器（TCC）的工作 状况等以适应于各种汽车行驶条件。 变速器控制模块（TCM）有一个车载诊断系 统，它能够监测到本系统的故障。 当诊断包含有本系统的变速器的故障时，保 证全面了解 “车载诊断系统说明”：M16A中 的要点和“故障诊断注意事项”：M16A中的 各项内容，并按照“自动变速器(A/T) 系统检 查 ”：M16A中步骤进行诊断以顺利获得得 正确结果。 车载诊断系统说明 对于自动变速器控制系统，TCM 有如下功 能。 ● 车辆停止，当点火开关置在“ON”位置时， 故障灯（1）点亮，系统自检。 ● 当TCM 检测到系统存在故障，此时故障 灯（1）将常亮，故障代码将设置并存储 于TCM。（在连续三个驾驶循环中，系 统若自检正常，此时，故障灯将熄灭， 故障代码将存储在TCM。） ● 用检测仪(2)或CAN 通信OBD 类型检测 仪通过数据线(3)与TCM 建立通讯。(检测仪 将检测系统的故障信息)。 对如下信息，请参见“车载诊断系统：1A 章”。 -暖机循环 -驾驶循环 -两个驾驶循环监测逻辑 -待定故障代码 -冻结桢数据 15 CAN线（控制器局域网络）通讯系统说明 关于CAN线通讯系统说明，参见“CAN线通讯系统说明：1A章”。变速器控制模块（TCM）与每个控 制模块交换控制数据，如下所示： TCM 传输数据 ECM 组合仪表 扭矩请求信号 O A/T 换档杆位置信号 O 变速器实际档位 O 变速器油温信号 O TCM 传输 数据 故障灯信号 O TCM 接收数据 ECM 发动机扭矩信号 O 发动机转速信号 O 发动机水温信号 O 制动踏板开关信号 O 空调压缩机离合器信号 O 节气门位置信号 O 加速踏板位置信号 O 驾驶循环执行信号 O TCM 接收 数据 暖机循环执行信号 O 16 原理图和线路图 AT系统线路图 CAN 通信线路 动力传递线路 液压回路 电信号 发动机 油 泵 主减速器 装置 液力变矩器 含离合器 阀体调节阀 压力控制电 磁阀 .换档电磁阀A .换档电磁阀B .TCC 电磁器 离合器 和制动 器 阀体控 制阀 变速器控制模块（TCM） 扭矩请求信号 变速器实际档位 故障灯控制信号 A/T 换档杆位置信号 变速器油温信号 发动机控制模块（ECM） 发动机转矩信号 发动机转速信号 节气门位置信号 加速踏板位置信号 发动机冷却液温度信号 刹车踏板开关信号 A/C 压缩机离合器信号 驾驶循环执行信号 暖机循环执行信号 ABS 控制模块 车身控制模块（BCM） 制动灯开关 加速踏板位置传 感器 曲轴位置传感器 发动机冷却液温 度传感器 “3”位置开关 输入轴转速传感器 变速器档位传感器 变速器油温传感器 输出轴转速传感器 组合仪表 DLC 行星齿 轮装置 17 变速器控制模块(TCM)线路图 1.变速器控制模块(TCM) 13.数据连接器(DLC) 25. 起动电机 2.输入轴转速传感器 14.变速器油温传感器 26.“DOME”保险 3.输出轴转速传感器 15.换档电磁阀-A(No.1) 27.“A/T”保险 4.发动机控制模块(ECM) 16.换档电磁阀-B(No.2) 28．“IG1 SIG（点火信号）”保 险 5.CAN 线驱动器 17.换档电磁阀-E(No.3) 29.“ST SIG(起动信号)”保险 6.车体控制模块（BCM） 18.液力变矩器离合器(TCC)电 磁阀 30.“ST(起动电机)”保险 7.仪表驱动器 19.压力控制电磁阀 31.变速器档位显示器 8.“3”位置开关 20.自动变速器(A/T) 32.ABS 控制模块 18 9.连接车体控制模块（BCM） 21.自动变速器(A/T)继电器 33.连接至数据集线器 10.故障指示灯(MIL) 22.限制开关(包括变速器档位传 感器) 11.变速器档位传感器 23. 起动电机继电器 [A]:变速器控制模块(TCM)插头 的端子布置(丛线束端观察) 12.倒车灯 24. 点火开关 零部件位置 电子换档控制系统零部件位置 1.发动机 8.ECM 15.TCC 电磁阀 2.变速箱 9.TCM 16.变速器档位传感器 3.换档杆 10.换档电磁阀-E（No.3） 17.输出轴转速传感器 4.“3”位置开关 11.变速器油温传感器 18.输入轴转速传感器 5.故障指示灯（MIL） 12.压力控制电磁阀 19.数据连接器（DLC） 6.变速器档位显示器 13.换档电磁阀-A（No.1） 7.AT 继电器 14.换档电磁阀-B（No.2） 19 诊断信息和步骤 自动变速器（A/T）系统检查 参照下列项目的每一步细节。 步骤 行动 是 否 1 M18A用户投诉分析 1） 进行用户投诉分析 进行了客户投诉分析吗? 到第2步。 进行客户投诉分 析。 2 M18A故障诊断码(DTC)冻结帧数据的检查，记录和清除 1) 故障诊断码(DTC)的检查参阅M18A“故障诊断码DTC 检查” 有故障诊断码（DTC）吗? 打印故障诊断码DTC或 抄录下代码并清除它们， 参见 M18A “故障诊断 码DTC清除”：到第3步。 到第4步。 3 M18A目测检查 1) 进行目测检查。 有故障条件吗? 修理或更换故障零件。到 第11步。 到第5步。 4 M18A目测检查 1) 进行目测检查。 有故障条件吗? 修理或更换故障零件。到 第11步。 到第8步。 5 M18A故障症状确认 1) 确认故障症状。 有故障症状吗? 到第6步。 到第7步。 6 复查并记录M18A故障诊断码(DTC)/冻结帧数据 1) 复查故障诊断码（DTC） 参见M18A “故障诊断码 （DTC）检查”。 有故障诊断码（DTC）(s)吗? 到第9步。 到第8步。 7 复查并记录M18A故障诊断码(DTC)/冻结帧数据 1) 复查故障诊断码(DTC)/ 参见M18A “ 故障诊断码 （DTC）检查：”。 有故障诊断码（DTC）(s)吗? 到第9步。 到第10步。 8 M18A自动变速器(A/T) 基本检查和自动变速器(A/T)故障 诊断 1) 按照M18A “自动变速器(A/T) 基本检查：” 和 M18A “自动变速器(A/T) 故障诊断：”进行检查和修理。 完成检查和修理了吗? 到第11步。 检查和修理故障 零件。到第11步。 9 对于M18A故障诊断码（DTC）的故障检修 1) 按照故障诊断码（DTC）流程检查和修理。 完成了检查和修理吗? 到第11步。 检查和修理故障 零件。到第11步。 10 M18A检查间歇性故障问题 1) 检查间歇性故障问题。 有故障条件吗? 修理或更换故障零件。 到第11步。 到第11步。 20 11 M18A最终确认试验 1) 清除故障诊断码（DTC），如果有。 2) 进行最终确认试验。 是否存在故障症状，DTC或异常条件？ 到第6步。 结束。 第1步. 客户投诉分析 记录下问题的细节，诸如故障和用户的投诉，以及用户的叙述的引起这些事情的原因。为了达到此目的，可以采取 填写这样一种调查表的形式以有助于收集诊断和分析所需要的最相关信息。 用户问题调查表(举例) 用户名称 车型 VIN： 签发日期 上牌照时间 出问题时间 里程数 问题症状 □ 汽车不能挂入(R、D、3、2、L 和其他任何档位) □ 不能自动向高档换档（□第1 档到第2 档，□第2 档到第3 档，□第3 档到第4 档(超速档)，□2 档，□D 档程） □ 不能自动向低档换档 （□第3 档到第2 档，□第2 档到第1 档，□第4 档(超速档) 到第3 档，□2 档程，□D 档 程） □ 不能手动换档（□第1 档—第3 档，□第3 档—第4 档） □ 液力变矩器离合器（TCC）未锁止，□液力变矩器离合器（TCC）未分离 □ 自动换档点太高或太低。 □ 换档冲击过大（第1 档/第2 档/第3 档/第4 档（超速行驶档）/倒挡） □ 不能换低挡 □ 变速器打滑，在（第1 档/第2 档/第3 档/第4 档（超速行驶档）/倒挡） □ 其他 问题发生时的车辆和环境条件 环境条件 气候 温度 频率 行驶道路 □晴天、□多云、□下雨、□正常、□其他 （ ℃/ ℉）□热、□温、□凉爽、□寒冷、□正常、 □经常、□有时（次数/天、月），□仅一次，□在特定条件下 □市区、□郊区、□高速、□山地、□上坡、□下坡、□柏油路、□砂砾路、□其他 汽车条件 发动机及变速器情况 □冷车、□暖机阶段、□已暖机 发动机转速（R/MIN） 节气门开度（□怠速、□大约开度 %、□全开度） □超速行驶切断开关（O/D）（□ON、□OFF） 汽车条件 □停车/□行驶（□恒速、□加速、□减速、□制动） □右转弯、□左转弯、□车速（ km/h mile/h） □其他 “超速行驶（O/D）OFF”关闭灯 □闪烁、□总是ON、□有时ON、□总是OFF、□情况良好 故障指示灯 □闪烁、□总是ON、□有时ON、□总是OFF、□情况良好 第1 次检查、□无代码、□故障代码（ ） 诊断故障代码 第2 次检查、□无代码、□故障代码（ ） 21 22 注意： 此表为标准范例。应根据每个市场的环境特性进行修改。 第2步. 故障诊断码（DTC）/冻结帧数据的检查，记录和清除 首先，参见 M18A“故障诊断码（DTC） 检查”，检查故障诊断码