Description
MAINTENANCE OF OIL LEVEL
The compressor oil is circulating in the system together with the refrigerant. It is necessary to fill compressor with oil when replacing A/C system parts or when a large amount of refrigerant leak is detected. It is important to always maintain oil level within the specified level or otherwise the following conditions may occur:
Oil Type: ND-OIL
Inspection
If a compressor is malfunctioning (internal noise, insufficient cooling), check the compressor oil.
1.COMPRESSOR OIL JUDGMENT
Judgement result 1>>Replace compressor only.
Judgement result 2>>Replace compressor and condenser (includes liquid tank).
Perform Oil Return Operation
CAUTION: If a large amount of refrigerant or oil leak is detected, do not perform oil return operation.
Oil Adjusting Procedure for Components Replacement Except Compressor
Fill with oil for the amount that is calculated according to the following conditions.
Example: Oil amount to be added when replacing evaporator [m (US fl oz, Imp fl oz)] = 75 (2.5, 2.6) + α
Conditions |
Oil amount to be added to A/C system m (US fl oz, Imp fl oz) |
|
Replace evaporator | 75 (2.5, 2.6) | |
Replace condenser (includes liquid tank) | 80 (2.7, 2.8) | |
Refrigerant leak is detected | Large amount leak | 30 (1.0, 1.1) |
Small amount leak | — | |
Oil amount that is recycled together with refrigerant during recycle operation | α |
Oil Adjusting Procedure for Compressor Replacement
No refrigerant pressure should be displayed. If NG, recover refrigerant from equipment lines.
If NG, refer to HA-4, "Precautions For Refrigerant System Service".
P0037, P0038 HO2S2 heater
DTC Description
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P0037
HO2S2 HTR (B1)
(HO2S heater control circuit low bank 1
sensor 2)
The current amperage in the heated oxygen sensor 2 heater circuit is
...
P2765 input speed sensor B
DTC Description
DTC DETECTION LOGIC
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P2765
INPUT SPEED SENSOR B
(Input/Turbine Speed Sensor B Circuit)
When 1 is satisfied and any of 2, 3 or 4 is satisfied and this state
is maintaine ...
Squeak and rattle trouble diagnoses
Work Flow
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the conditions that exist
when the noise occurs. Use the Diagnostic
Worksheet during the interview to document the facts and conditions when the
noise occurs and any
customer's comments; refer to RF-47, &qu ...