A/C - Special Electric A/C Compressor Refrigerant Oil
COLLISION REPAIR INFORMATIONFOR THE COLLISION REPAIR PROFESSIONAL
TITLE:
ELECTRICALLY-DRIVEN A/C COMPRESSORS & SPECIAL LUBRICANT (ND-11)
SECTION:
MECHANICAL - ELECTRICAL
BULLETIN # 178
MODELS:
ALL TOYOTA and LEXUS HYBRID MODELS 2004-
DATE:
AUGUST 2010
2004 and newer Toyota and Lexus Hybrid models are equipped with High-Voltage Three-Phase Alternating Current Air Conditioning Compressors, which have specific safety and service requirements.
Electrically-driven A/C Systems safety precautions system operation component replacement service instructions and unique system features and requirements are published in model-specific Repair Manuals that can be accessed through the Toyota Technical Information System (TIS).
Collision Repair Professionals should be aware of the following system characteristics:
^ Orange colored High-Voltage wiring is connected to electrically-driven A/C compressors (see photo).
^ Electrically-driven A/C compressors have no drive belt.
^ Electrically-driven A/C compressors require special ND-11 lubricating oil.
^ Underhood A/C system decal specifies use of ND-11 oil (see decal/label below).
^ Use ONLY ND-11 lubricating oil because of its electrical insulating characteristics.
^ Avoid oil cross-contamination during evacuation and refrigerant charging by using hoses designated for ND-11.
^ Cross-contamination and the use of incorrect lubricating oil can set Diagnostic Trouble Codes (DTC) and cause damage to the electrically-driven compressor.