2026-08-09

Redundant Control Unit - Brake ((拆卸和更换))

校正代码 33100101402 33100101401 1.44 注意:除非本程序中另有明确规定,否则上文所列校正代码及相关 FRT 反映的是执行本程序(包括关联程序)所需的所有工作。除非明确要求,否则请勿堆叠校正代码。 注意:请参阅平均维修工时深入了解 FRT 及其创建方式。 注意:请参阅人员保护确保在执行以下程序时穿戴适当的个人防护装备 (PPE)。 注意:请参阅人体工程学注意事项查看安全健康的作业规程。

  • 2025-09-26: Updated brake bleed steps, suggested adding absorbent mat under the RCU, instructed to remove HVIL harness at LH shock tower.
警告
本程序为“草案”。虽已通过验证,但可能仍有“警告”和“注意”事项缺失。请遵守安全要求,处理或靠近高压系统和部件时,请谨慎操作。
注
本程序适用于在北美生产的车辆。
  1. Raise and support vehicle
    注
    Ensure vehicle is not charging, Remove charging cable if it's plugged in
  2. Open LH front door
  3. Lower LH front window
  4. Open hood
  5. Remove rear apron
    注
    16x trim clips, 3x datums, 2x clips
  6. Remove HEPA filter assembly
    注
    2x bolts, 10mm, 10 Nm, Pivot rear edge up past brake reservoir then lift up to clear frunk assembly
  7. Remove frunk access panel
    注
    3x clips, 3x tabs, 1x connector
  8. Remove bolts securing frunk to vehicle
    注
    4x bolts, 10mm, 5 Nm
  9. Remove frunk from vehicle
    注
    4x clips, 3x tabs, 2x trim clips, Replace any clips if broken or missing
  10. Power off vehicle from center display
    注
    Via Controls > Safety > Power off, Select "Power Off" button at warning dialogue box
  11. Disconnect LV battery and first responder loop
    注
    2x connectors, Release green locking tab, Press black tab then pull black connector lock outwards to release connection, Release red lock tab on FRL, Allow 2 minutes for all electrical circuits to fully discharge
  12. Place absorbent material underneath brake lines and brake fluid reservoir to catch any fluid lost
  13. Clean area around brake fluid reservoir and remove brake reservoir cap
  14. Remove brake fluid from brake reservoir
    注
    Install absorbent cloth or rag underneath brake fluid reservoir
  15. Raise vehicle fully and lower lift onto locks
    注
    Set vehicle to comfortable working height, Make sure there's an audible click of locks on both sides before lowering, Otherwise vehicle may tilt to side
  16. Remove front aero shield
    注
    2x nuts, 15mm, 8 Nm
  17. Remove RCU lower fastener
    注
    1x bolt, 10mm, 10 Nm
  18. Lower vehicle until tires are touching ground
    注
    Raise lift off locks, Then hold lock release lever to keep locks free while vehicle is lowered
  19. Disconnect the HVIL connector from the LH shock tower, and then release the shock tower fir tree clip for that harness branch.
  20. Tuck the HVIL harness branch between the A/C compressor pipes, as pictured.
  21. Remove bolts securing shock tower brace to shock tower
    注
    4x bolts, 15mm, 55 Nm, 2x bolts, 62 Nm, See image for torque location
  22. Support the LH side of the shock tower brace
    注
    1x airbag, Use assistance if needed
  23. Place an absorbent mat under the RCU to catch any brake fluid spills when the brake lines are released in the following steps.
  24. Release brake fluid reservoir return line
    注
    1x locking clip, depress the two sides and pull upwards, there will be minimal excess brake fluid that will be released
  25. Release master cylinder secondary pipe from RCU
    注
    1x nut, 12mm, 16 Nm
  26. Remove master cylinder primary pine from RCU
    注
    1x nut, 12mm, 16 Nm
  27. Remove brake lines to front calipers
    注
    2x nuts, 12mm, 16 Nm
  28. Disconnect RCU ecu
    注
    1x locking tab, 1x lever, lift locking tab up and lever down
  29. Remove upper fastener from RCU
    注
    1x bolt, 10mm, 10 Nm
  30. Remove RCU
    注
    2x guide datums
  31. Install RCU
    注
    2x guide datums, hand start the upper 10mm to hold in position
  32. Secure upper fastener to RCU
    注
    1x bolt, 10 mm, 10 Nm
  33. Connect RCU ecu
    注
    Fully mount connector and lift lever up to secure, 1x locking tab
  34. Install master cylinder pipe to RCU
    注
    1x nut, 12mm, 16 Nm
  35. Install secondary cylinder pipe to RCU
    注
    1x nut, 12mm, 16 Nm
  36. Install front caliper brake lines to RCU
    注
    2x nuts, 12mm, 16 Nm, Hand start first to prevent cross threading
  37. Install brake fluid reservoir return line
    注
    1x locking tab, perform a push pull test to ensure it is fully engaged
  38. Loosely Install bolts securing shock tower brace to shock tower
    注
    4x bolts, 15mm, 55 Nm, 2x bolts, 62 Nm, See image for torque location
  39. Torque bolts securing shock tower brace to shock tower
    注
    4x bolts, 15mm, 55 Nm, 2x bolts, 62 Nm, See image for torque location
  40. Connect first responder loop and LV battery
    注
    2x connectors, Secure FRL first, Seat LV battery connection and push black connector lock inwards to secure, Engage green locking tab when fully seated
  41. 运行 ODIN 例行程序 PROC_ICE_X_ENTER-SERVICE-MODEvia Toolbox:(link)
  42. 运行 ODIN 例行程序 UPDATE_CAN-REDEPLOYvia Service Mode Plus:
    • Drive Inverter Replacement ➜ Drive Inverter DIRE1L Replacement ➜ CAN Redeploy
    • Drive Inverter Replacement ➜ Drive Inverter DIRE1R Replacement ➜ CAN Redeploy
    • Drive Inverter Replacement ➜ Drive Inverter DIRE2 Replacement ➜ CAN Redeploy
    • Drive Inverter ➜ Front Drive Inverter Replacement ➜ CAN Redeploy
    • Drive Inverter ➜ Rear Drive Inverter Replacement ➜ CAN Redeploy
    • Drive Inverter ➜ Rear Left Drive Inverter Replacement ➜ CAN Redeploy
    • Drive Inverter ➜ Rear Right Drive Inverter Replacement ➜ CAN Redeploy
    • Drive Unit ➜ Front Drive Unit Replacement ➜ CAN Redeploy
    • Drive Unit ➜ Rear Drive Unit Replacement ➜ CAN Redeploy
    • Thermal ➜ HVAC ➜ CAN Redeploy
    • chassis ➜ DPB Post Replacement ➜ CAN Redeploy
    • chassis ➜ ESP Post Replacement ➜ CAN Redeploy
    • chassis ➜ IDB Post Replacement ➜ CAN Redeploy
    • chassis ➜ RCU Post Replacement ➜ CAN Redeploy
    • chassis ➜ ESP Replacement Panel ➜ CAN Redeploy
    • chassis ➜ IBST Replacement Panel ➜ CAN Redeploy
    via Toolbox:(link)
  43. Once firmware redeploy is complete, Verify on center display release notes are present
    注
    If the redeploy fails you may receive an error message on UI
  44. Raise and support vehicle
    注
    Ensure vehicle is not charging, Remove charging cable if it's plugged in
  45. Remove LH front wheel cap
    注
    1x cap, Use tool to gently pull the center wheel cap to release the clips, Wheels may be equipped with different caps
  46. Loosen LH front wheel nuts
    注
    5x nuts, 21mm, 175 Nm
  47. Remove RH front wheel cap
    注
    1x cap, Use tool to gently pull the center wheel cap to release the clips, Wheels may be equipped with different caps
  48. Loosen RH front wheel nuts
    注
    5x nuts, 21mm, 175 Nm
  49. Remove LH rear wheel cap
    注
    1x cap, Use tool to gently pull center wheel cap to release clips, Wheels may be equipped with different caps
  50. Loosen LH rear wheel nuts
    注
    5x nuts, 21mm, 175 Nm
  51. Remove RH rear wheel cap
    注
    1x cap, Use tool to gently pull center wheel cap to release clips, Wheels may be equipped with different caps
  52. Loosen RH rear wheel nuts
    注
    5x nuts, 21mm, 175 Nm
  53. Raise vehicle partially and lower lift onto locks
    注
    Set vehicle to a comfortable working height, Make sure there's an audible click of the locks on both sides before lowering, otherwise vehicle may tilt to the side
  54. Remove LH front wheel
    注
    5x nuts, 21mm, 175 Nm
  55. Remove RH front wheel
    注
    5x nuts, 21mm, 175 Nm
  56. Remove LH rear wheel
    注
    5x nuts, 21mm, 175 Nm
  57. Remove RH rear wheel
    注
    5x nuts, 21mm, 175 Nm
  58. Lower vehicle partially and set onto locks
    注
    Raise lift off locks, Then hold lock release lever to keep locks free while vehicle is lowered, Set vehicle to comfortable working height
  59. 运行 ODIN 例行程序 PROC_ICE_X_ENTER-SERVICE-MODE-PLUSvia Toolbox:(link)
  60. Run RCU Calibrate Pedal Travel Sensor
    注
    Select Chassis > Procedures > RCU Post Replacement > Pedal Travel Sensor, click Run, follow on screen instructions to press/release brake pedal, close once routine is succeeded,
  61. Run RCU Calibrate Pressure Sensor
    注
    Select Chassis > Procedures > RCU Post Replacement > RCU Calibrate Pressure Sensor, click Run,
  62. Fill brake bleeder reservoir to full level
  63. Top off brake fluid reservoir
    注
    Top off brake fluid as needed
  64. Install pressure bleeder adapter onto reservoir
  65. Setup brake bleeder
    注
    Connect power supply to bleeder and turn on the power to set pressure to 30 psi, Attach the brake reservoir hose to the brake adapter at this time
  66. Remove LH front caliper inner bleed valve cover then install fluid catcher
    注
    1x cover
  67. PLACEHOLDER, Run Manual Caliper Bleed
    注
    Select Chassis > Procedures > RCU Post Replacement >Manual Caliper Bleed
  68. 运行 ODIN 例行程序
  69. When the routine finishes, torque the LH front caliper bleed valve, and then remove fluid catcher.
    注
    1x bleed valve, 11mm, 18.5 Nm, 1x cover, Install cover when torqued
  70. Remove RH front caliper inner bleed valve cover then install fluid catcher
    注
    1x cover
  71. 运行 ODIN 例行程序
  72. When the routine finishes, torque the RH front caliper bleed valve, and then remove fluid catcher.
    注
    1x bleed valve, 11mm, 18.5 Nm, 1x cover, Install cover when torqued
  73. Turn off and remove pressure brake bleeder kit from vehicle
  74. Check brake fluid level
    注
    Top off if necessary
  75. Install service brake reservoir cap
  76. Remove absorbent material from underneath brake booster assembly and reservoir area
  77. Bleed Internal Circuits
    注
    Select Chassis > Procedures > RCU Post Replacement > Bleed Internal Circuit-s
  78. Perform RCU Corner Stiffness Test
    注
    Select Chassis > Procedures > RCU Post Replacement > Corner Stiffness Test, click Run, follow on screen instructions
  79. Perform RCU Valve Test
    注
    Select Chassis > Procedures > RCU Post Replacement > Valve Test, click Run, follow on screen instructions
  80. Disconnect Toolbox from vehicle and remove laptop and Diagnostics Adapter Ethernet Harness
    注
    If RJ45 ethernet diagnostic connector present media converter box not required disconnect directly from laptop using an RJ45 Ethernet cable or from OBDII connection
  81. 运行 ODIN 例行程序 PROC_ICE_X_EXIT-SERVICE-MODEvia Toolbox:(link)
  82. Pump brake pedal a few times to ensure brake pedal feels normal
  83. Raise vehicle partially and lower lift onto locks
    注
    Set vehicle to a comfortable working height, Make sure there's an audible click of the locks on both sides before lowering, otherwise vehicle may tilt to the side
  84. Install LH front wheel
    注
    5x nuts, 21mm, 175 Nm, Start lug nuts by hand before using power tool
  85. Install LH rear wheel
    注
    5x nuts, 21mm, 175 Nm, Start lug nuts by hand before using power tool
  86. Install RH front wheel
    注
    5x nuts, 21mm, 175 Nm, Start lug nuts by hand before using power tool
  87. Install RH rear wheel
    注
    5x nuts, 21mm, 175 Nm, Start lug nuts by hand before using power tool
  88. Lower vehicle until tires are touching ground
    注
    Raise lift off locks, then hold lock release lever to keep locks free while vehicle is lowered
  89. Torque LH front wheel nuts
    注
    5x nuts, 21mm, 175 Nm
  90. Install LH front wheel cap
    注
    1x cap, Align valve stem with wheel cap cavity, Wheels may be equipped with different caps
  91. Torque RH front wheel nuts
    注
    5x nuts, 21mm, 175 Nm
  92. Install RH front wheel cap
    注
    1x cap, Align valve stem with wheel cap cavity, Wheels may be equipped with different caps
  93. Torque LH rear wheel nuts
    注
    5x nuts, 21mm, 175 Nm
  94. Install LH rear wheel cap
    注
    1x cap, Align valve stem with wheel cap cavity, Wheels may be equipped with different caps
  95. Torque RH rear wheel nuts
    注
    5x nuts, 21mm, 175 Nm
  96. Install RH rear wheel cap
    注
    1x cap, Align valve stem with wheel cap cavity, Wheels may be equipped with different caps
  97. Raise vehicle fully and lower lift onto locks
    注
    Set vehicle to comfortable working height, Make sure there's an audible click of locks on both sides before lowering, Otherwise vehicle may tilt to side
  98. Install RCU lower fastener
    注
    1x bolt, 10mm, 10 Nm
  99. Install front aero shield onto vehicle
    注
    7x bolts, 10mm, 5 Nm, Apply Loctite 222 onto front aero shield bolts and install fasteners to front aero shield
  100. Lower vehicle fully
    注
    Raise lift off locks, Then hold lock release lever to keep locks free while vehicle is lowered
  101. Install frunk to vehicle
    注
    4x clips, 3x tabs, 2x trim clips, Replace any clips if broken or missing
  102. Install bolts securing frunk to vehicle
    注
    4x bolts, 10mm, 5 Nm
  103. Install frunk access panel
    注
    3x clips, 3x tabs, 1x connector
  104. Install HEPA filter assembly
    注
    2x bolts, 10mm, 10 Nm, Pivot forward edge down past frunk assembly, Then carefully move rear edge past brake reservoir and into position, Gently press on RH side of filter to seat seal onto duct
  105. Install rear apron
    注
    16x trim clips, 3x locator pins, 2x clips, Replace any missing or damaged clips, Ensure pyrotechnic hood actuators are aligned with openings in apron
  106. Close hood
  107. Raise LH front window
  108. Close LH front door
  109. Remove vehicle from lift
    注
    Lower rack arms fully and remove from under vehicle
  110. Perform a road test
    注
    Ensure proper brake pedal feel and performance Add correction code 00040100 as needed