Symptom Table
Follow the next table and perform trouble diagnosis if there is a compressor unit malfunction (internal noise, insufficient cooling).
|
Symptom |
Inspection method |
Check list |
Result |
Action |
| Noise from compressor unit
When A/C is ON.
(rattling or rolling sound) |
Cooker system internal pressure | Check with manifold gauge | Both high- and lowpressure sides are high.*2 | Recharge with proper amount of refrigerant. |
| High/low-pressures hunt.*2 | Replace compressor only. | |||
| Check compressor oil condition. | Sample compressor oil and judge. | Refer to the criteria shown in compressor lubricant. | Judgment result 1: Replace
compressor only. Judgment result 2: Replace compressor and liquid tank. |
|
| Insufficient cooling*1 | Compressor body | Check rotation of compressor. If sized or stuck, sample compressor oil and judge. |
||
| Cooler system internal pressure | Check with a manifold gauge. Sample compressor oil and judge if the difference between high-pressure and low-pressure is small or if they are almost the same. |
|||
| Outlet air temperature rises temporarily while driving.*2 |
— |
— |
— |
Replace compressor only. |
*1: First conduct inspection according to trouble diagnosis for each
malfunction.
*2: Applicable to variable capacity compressor only.

Refrigeration system symptomsLuggage room lamp circuit
Description
Controls the luggage room lamp (ground side) to turn the luggage room lamp ON
and OFF.
Diagnosis Procedure
CAUTION:
Before performing the diagnosis, check that the following is normal.
Interior room lamp power supply
Luggage room lamp bulb
1.CHECK LUGGAGE ROOM ...
Basic inspection
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
1.GET INFORMATION FOR SYMPTOM
Get detailed information from the customer about the symptom (the condition
and the environment when the
incident/malfunction occurred).
>> GO TO 2.
2.CONFIRM THE SYMPTOM
Try t ...
P0128 thermostat function
DTC Description
DTC DETECTION LOGIC
Engine coolant temperature has not risen enough to open the thermostat even
though the engine has run long
enough.
This is due to a leak in the seal or the thermostat being stuck open.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
...