17/09/2024 04:52:34
Compressor (Remove and Replace)
Correction Code 18203902
- 2024-09-17: Added some missing steps in line with procedure validation.
Warning
Only technicians who have been
trained in High Voltage (HV) Awareness and have completed all required
certification courses (if applicable) are permitted to perform this procedure.
Proper Personal Protective Equipment (PPE) and insulating HV gloves with a
minimum rating of class 0 (1000V) must be worn any time a high voltage cable is
handled. Refer to Tech Note TN-15-92-003, "High Voltage Awareness
Care Points" for additional safety information.
Removal
- Remove the underhood storage unit. See .
- Recover the A/C refrigerant. See A/C Refrigerant Recovery and Recharge (Remove and Replace) .
- Remove the cowl screen panel. See .
- Remove the HEPA filter duct. See .
- Perform the electrical isolation procedure. See GUID-FE56114D-662F-41B2-B2B4-F00B5068C5D1.html
- Remove the 12V battery bracket. See .
- Remove the wiper module. See .
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Move the coolant reservoir out of the working area:
- Disconnect the A/C recovery hoses from the A/C service ports.
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Move the air suspension reservoir out of the working area.
- Disconnect the pressure sensor from the LH side of the compressor.
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Release the ground strap from the compressor (torque 7 Nm).
- Disconnect the low voltage connector from the compressor.
- Release the clip that attaches the low voltage harness to the compressor mount.
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Release the nuts that attach the A/C lines to the compressor (torque 10 Nm).
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Disconnect the compressor HV harness from the forward junction box.
- Release the clip that attaches the HV harness to the front drive unit.
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Have an assistant support the compressor. Remove the bolts (x3) that attach the A/C compressor bracket to the front drive unit (torque 10 Nm).
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Remove the compressor and bracket from the vehicle as an assembly.
CAUTIONDo not spill oil from the compressor when removing it. The amount of oil remaining in the old compressor needs to be measured when the new compressor is installed.
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Remove the bolts (x3) that attach the compressor to the bracket (torque 20 Nm).
NoteRetain the bracket.
- Release the compressor from the bracket.
- Remove the NVH padding.
Installation
Installation procedure is the reverse of removal, except for the following:
CAUTION
The new A/C compressor is pre-filled with the total amount of oil used in the A/C system. Oil needs to be removed so that the amount of oil in the new A/C compressor equals the amount of oil in the old one. To do this, use a digital scale to weigh both the old and new A/C compressors. Turn the new one upside down to drain a small amount of oil, then re-weigh it. Repeat this process until the new A/C compressor weighs the same as the old one.
- Replace the O-rings on the A/C lines.
- Recharge the A/C system.