2026-09-24

EXV3 Core - Supermanifold (6 Seat) (Remove and Replace)

Correction code TBD FRT 0.35 NOTE: Unless otherwise explicitly stated in the procedure, the correction code and its associated FRT reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so. NOTE: See Flat Rate Times to learn more about FRTs and how they are created. NOTE: See Personal Protection to make sure you are wearing proper PPE when performing the procedure below. NOTE: See Ergonomic Precautions for safe and healthy working practices.

Note
This procedure requires the A/C Refrigerant (Recovery and Recharge) procedure to be performed. If not already automatically added to the Service Visit, add correction code 18200102 as a separate correction within the same activity to the Service Visit.

Torque Specifications

Table 1. Torque Specifications:
Description Torque Value Recommended Tools Reuse/Replace Notes
Bolt that attaches the supermanifold-to-compressor A/C line to the supermanifold
22 Nm (16.2 lbs-ft)
  • 13 mm socket
Reuse
Bolts (x3) that attach the supermanifold harness bracket to the supermanifold
8 Nm (5.9 lbs-ft)
  • 8 mm deep socket
 Reuse
EXV3 Core
19 Nm (14.0 lbs-ft)
  • 1588741-00-A - HVAC Socket Kit
  • Flex head ratchet/flex head torque wrench
 Reuse PT sensor socket or 24 mm socket depends on the valve core type

Remove

  1. Set up the AC machine.
  2. Unlock the vehicle gateway. See Gateway (Unlock).
  3. Perform the following routine using Service Mode or Toolbox (see 0005 - Service Modes): PROC_VCFRONT_X_START-THERMAL-FILL-DRAIN-REFRIGERANTvia Toolbox:(link)
  4. Power off the vehicle from the center display.
    Note
    On the touchscreen, touch Controls > Safety > Power Off > Power Off.
  5. Remove the HEPA filter assembly. See HEPA Filter Assembly (Remove and Replace).
  6. Remove the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  7. Recover the A/C refrigerant. See A/C Refrigerant (Recovery and Recharge) (Restore).
    Warning
    Make sure there is no overpressure in the A/C system before performing the following steps. Failure to do so may result in damage to components and/or personal injury.
    Warning
    HFO-R1234yf and R134a are considered hazardous and, if handled incorrectly, can cause serious injury. Suitable personal protective equipment, consisting of face and eye protection, safety glasses, face shield, heat-proof gloves, chemical resistant gloves, rubber boots and apron or waterproof overall must be worn when carrying out operations on the air conditioning system.
  8. Remove A/C machine hoses from the vehicle.
  9. Carefully depress the Schrader valves (x2) to level out any pressure difference between the A/C system pressure and the actual ambient atmospheric pressure.
    CAUTION
    Make sure to depress both Schrader valves. Failure to do so may result in injury.
  10. Remove the bolt that attaches the supermanifold-to-compressor A/C line to the supermanifold.
    Note
    Use of the following tool(s) is recommended:
    • 13 mm socket
  11. Remove the supermanifold-to-compressor A/C line from the supermanifold, and move it aside.
    Note
    Carefully position the line so that oil does not drip out.
  12. Remove the bolts (x3) that attach the supermanifold harness bracket to the supermanifold.
    Note
    Use of the following tool(s) is recommended:
    • 8 mm deep socket
  13. Disconnect the pressure and temperature sensor connectors (x3).
    CAUTION
    DO NOT push down on the red locking tab. Pull the tab away from the connector until the connector is unlocked, and then continue pulling the main body of the connector to fully disconnect it.
  14. Grip the bottom of the coils, and pull the supermanifold harness bracket and the valve coils evenly outward to disengage them from the supermanifold.
  15. Remove the EXV3 core from the supermanifold.
    Note
    Use of the following tool(s) is recommended:
    • 1588741-00-A - HVAC Socket Kit
    • Flex head ratchet/flex head torque wrench

Install

  1. Lubricate O-rings on the valve core with the appropriate A/C oil. See for A/C oil specifications. Then hand-start the valve core into the supermanifold.
    Note
    Make sure that the seals are properly seated.
  2. Fully torque the EXV core on the supermanifold.
    19 Nm (14.0 lbs-ft)
    Note
    Use of the following tool(s) is recommended:
    • 1588741-00-A - HVAC Socket Kit
    • Flex head ratchet/flex head torque wrench
  3. Remove the seals from the coils, and then install them to the expansion valve cores.
    Note
    This is to aid coil installation.
  4. Install the supermanifold harness bracket and the valve coils to the supermanifold.
  5. Connect the pressure and temperature sensor connectors (x3).
    CAUTION
    Push the red locking tab towards the connector to engage the locking mechanism. DO NOT push down or pull up on the red locking tab.
  6. Install the bolts (x3) that attach the supermanifold harness bracket to the supermanifold.
    8 Nm (5.9 lbs-ft)
    Note
    Use of the following tool(s) is recommended:
    • 8 mm deep socket
  7. Install new seal washers on the supermanifold side of the supermanifold-to-compressor A/C line, and then lubricate the washers with a small amount of the appropriate A/C oil. See Fluids and Capacities for A/C oil specifications.
  8. Position the supermanifold to compressor A/C line onto the supermanifold, and then hand-tighten the bolt that attaches the A/C line to the supermanifold.
  9. Tighten the bolt that attaches the supermanifold to compressor A/C line to the supermanifold.
    22 Nm (16.2 lbs-ft)
    Note
    Use of the following tool(s) is recommended:
    • 13 mm socket
  10. Perform the vacuum leak test and oil injection, and A/C refrigerant recharge. See A/C Refrigerant (Recovery and Recharge) (Restore).
  11. Install the HEPA filter assembly. See HEPA And Carbon Filters (Remove and Replace).
  12. Install the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  13. Unlock the vehicle gateway. See Gateway (Unlock).
  14. Perform the following routine using Service Mode or Toolbox (see 0005 - Service Modes): PROC_VCFRONT_X_STOP-THERMAL-FILL-DRAINvia Service Mode:
    • Thermal ➜ Actions ➜ Stop Thermal Fill/Drain
    • Thermal ➜ Coolant System ➜ Stop Coolant Fill/Drain
    • Thermal ➜ Refrigerant System ➜ Stop Refrigerant Fill/Drain
    via Service Mode Plus:
    • Drive Inverter ➜ Front Drive Inverter Replacement ➜ Stop Fluid Fill/Drain
    • Drive Inverter ➜ Rear Drive Inverter Replacement ➜ Stop Fluid Fill/Drain
    • Drive Inverter ➜ Rear Left Drive Inverter Replacement ➜ Stop Fluid Fill/Drain
    • Drive Inverter ➜ Rear Right Drive Inverter Replacement ➜ Stop Fluid Fill/Drain
    • Drive Unit ➜ Front Drive Unit Replacement ➜ Stop Coolant Fill/Drain
    • Drive Unit ➜ Rear Drive Unit Replacement ➜ Stop Coolant Fill/Drain
    via Toolbox:(link)
  15. Perform the following routine using Service Mode or Toolbox (see 0005 - Service Modes): TEST-SELF_VCFRONT_X_HEAT-PUMP-COMMISSIONINGvia Service Mode:Thermal ➜ Refrigerant System ➜ Commission Heat Pumpvia Service Mode Plus:Drive Inverter ➜ Front Drive Inverter Replacement ➜ Heatpump commissioningvia Toolbox:(link)
  16. Exit Service Mode. See Service Mode.
  17. Raise the LH front window and close the LH front door.