Front Air Conditioner

INSUFFICIENT COOLING:_:FRONT AIR CONDITIONER





Description

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




Diagnosis Procedure

NOTE:
Perform self-diagnoses with CONSULT-III before performing symptom diagnosis. If any DTC is detected, perform the corresponding diagnosis.
1.CHECK MAGNET CLUTCH OPERATION
1. Turn ignition switch ON.
2. Operate fan switch.
3. Press A/C switch.
4. Check that A/C indicator turns ON. Check visually and by sound that compressor operates.
5. Press A/C switch again.
6. Check that A/C indicator turns OFF. Check that compressor stops.
Is the inspection result normal?
YES - GO TO 2.
NO - Perform diagnosis of "COMPRESSOR DOSE NOT OPERATE" in "SYMPTOM DIAGNOSIS". Compressor Does Not Operate.
2.CHECK DRIVE BELT
Check tension of 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
Connect recovery/recycling recharging equipment to the vehicle and perform pressure inspection with gauge.
Symptom Table.
Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace parts depending on the inspection results.
4.CHECK AIR LEAKAGE FROM EACH DUCT
Check duct and nozzle, etc. of the front air conditioning 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.
Is the inspection result normal?
YES - GO TO 6.
NO - Perform diagnosis for the A/C auto amp. connection recognition signal circuit. A/C Auto Amp. Connection Recognition Signal Circuit, "Diagnosis Procedure".
6.CHECK SETTING OF TEMPERATURE SETTING TRIMMER (FRONT)
1. Check setting value of temperature setting trimmer (front). Temperature Setting Trimmer.
2. Check that temperature setting trimmer (front) is set to "+ direction".

NOTE:
The control temperature can be set with the setting of the temperature setting trimmer (front).
3. Set difference between set temperature and control temperature to "0".
Is inspection result normal?
YES - INSPECTION END
NO - Replace A/C auto amp.. Service and Repair.