Insufficient Cooling

INSUFFICIENT COOLING

Description

- Insufficient cooling
- No cool air comes out. (Air flow volume is normal.)


Diagnosis Procedure


CAUTION:
Perform the self-diagnoses with on board diagnosis and CONSULT before performing symptom diagnosis. If any malfunction result or DTC is detected, perform the corresponding diagnosis.

1. CHECK MAGNET CLUTCH OPERATION

1.Turn the ignition switch ON.
2.Operate the fan control switch.
3.Press the A/C switch.
4.Check that the indicator of the A/C switch turns ON. Check visually and by sound that the compressor operates.
5.Press the A/C switch again.
6.Check that the indicator of the A/C switch turns OFF. Check that the compressor stops.
Is the inspection result normal?
YES- GO TO 2.
NO- Perform the diagnosis of "COMPRESSOR DOSE NOT OPERATE" in "SYMPTOM DIAGNOSIS".
Compressor Does Not Operate.

2. CHECK DRIVE BELT

Check tension of the drive belt. Procedures.
Is the inspection result normal?
YES- GO TO 3.
NO- Adjust or replace drive belt depending on the inspection results.

3. CHECK REFRIGERANT CYCLE PRESSURE

Connect the recovery/recycling recharging equipment to the vehicle and perform the pressure inspection with the gauge. Symptom Table.
Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace the parts depending on the inspection results.

4. CHECK AIR LEAKAGE FROM EACH DUCT

Check duct and nozzle, etc. of the air conditioner system for leakage.
Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace parts depending on the inspection results.

5. CHECK AMBIENT TEMPERATURE DISPLAY

Check that there is not much difference between actual ambient temperature and indicated temperature on information display in combination meter.
NOTE:
Actual ambient temperature is sensor recognition temperature of on board self-diagnosis STEP-5.
Is the inspection result normal?
YES- GO TO 6.
NO- Perform the diagnosis for the A/C auto amp. connection recognition signal. A/C Auto Amp. Connection Recognition Signal Circuit.

6. CHECK SETTING OF TEMPERATURE SETTING TRIMMER

1.Check the setting value of temperature setting trimmer. Temperature Setting Trimmer.
2.Check that the temperature setting trimmer is set to "+ direction".
NOTE:
The control temperature can be set with the setting of the temperature setting trimmer.
3.Set the difference between the set temperature and control temperature to "0".
Is inspection result normal?
YES- INSPECTION END
NO- Replace the A/C auto amp.