Heating and Air Conditioning: Service Precautions
HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: PRECAUTION
1. PRECAUTIONS WHEN USING TECHSTREAM
(a) When using the Techstream with the power switch off to troubleshoot:
Connect the Techstream to the vehicle, and turn a courtesy light switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins.
(b) After all DTCs are cleared, check if the trouble occurs again 6 seconds after the power switch is turned on (IG).
2. DO NOT HANDLE REFRIGERANT IN AN ENCLOSED AREA OR NEAR AN OPEN FLAME
Text in Illustration
3. ALWAYS WEAR EYE PROTECTION
4. BE CAREFUL NOT TO GET LIQUID REFRIGERANT IN YOUR EYES OR ON YOUR SKIN
If liquid refrigerant gets in your eyes or on your skin:
(a) Wash the area with lots of cold water.
CAUTION:
Do not rub your eyes or skin.
(b) Apply clean petroleum jelly to the skin.
(c) Go immediately to a hospital or see a physician for professional treatment.
5. NEVER HEAT CONTAINER OR EXPOSE CONTAINER TO OPEN FLAME
6. BE CAREFUL NOT TO DROP CONTAINER OR APPLY PHYSICAL SHOCKS TO IT
7. DO NOT OPERATE COMPRESSOR WITHOUT ENOUGH REFRIGERANT IN REFRIGERANT SYSTEM
If there is not enough refrigerant in the A/C system, oil lubrication will be insufficient and the compressor may be damaged.
Necessary care should be taken to avoid this.
8. DO NOT OPEN HIGH PRESSURE MANIFOLD VALVE WHILE COMPRESSOR IS OPERATING
(a) Open and close only the low pressure valve.
If the high pressure valve is opened, refrigerant flows in the reverse direction causing the charging cylinder to rupture.
9. BE CAREFUL NOT TO OVERCHARGE SYSTEM WITH REFRIGERANT
If refrigerant is overcharged, it causes problems such as insufficient cooling, poor fuel economy, engine overheating, etc.
10. DO NOT OPERATE COMPRESSOR WITHOUT REFRIGERANT
CAUTION:
Doing so may damage inside the compressor because the compressor parts always move regardless of whether the A/C system is turned on or off.
11. PRECAUTIONS TO BE OBSERVED WHILE SERVICING
CAUTION:
Always use electric insulating gloves and remove the service plug grip before beginning inspection, as inspection of the A/C system requires disconnecting high voltage connectors.
NOTICE:
* Only use ND-OIL11 for the electric inverter compressor of the air conditioning system. Using other compressor oils may be dangerous, as they may conduct electricity.
* Electrical insulation performance may decrease significantly if even a small amount of oil other than ND-OIL11 is used (or enters) in the refrigeration cycle, causing a DTC to be output.
* If other oil is accidentally used and a DTC is output, collect the compressor oil in the compressor and replace it with ND-OIL11 to increase the ND-OIL11 ratio amount.
* Replace the main components (evaporator, condenser, and compressor) if a large amount of oil other than ND-OIL11 enters the system. Failing to do so may cause electrical insulation performance to remain low, causing a DTC to be output.
12. SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
(a) This vehicle is equipped with an Supplemental Restraint System (SRS) such as the driver, front passenger, side and curtain shield airbags. Failure to carry out service operations in the correct sequence could cause the SRS to unexpectedly deploy during servicing, possibly leading to a serious accident. Before servicing (including removal or installation of parts, inspection or replacement), be sure to read the precautionary notices Service Precautions.
13. GENERAL PRECAUTION
(a) While using battery voltage during inspection, do not bring the positive (+) and negative (-) tester probes too close to each other as a short circuit may occur.