Inspection Procedure

INSUFFICIENT COOLING


Inspection procedure

1.CHECK WITH A GAUGE OF RECOVERY/RECYCLING RECHARGING EQUIPMENT
Connect the recovery/recycling recharging equipment to the vehicle and perform the pressure inspection with the gauge.
Is there refrigerant?
YES - GO TO 2.
NO-1 - Check for refrigerant leakages with the refrigerant leakage detecting fluorescent leak detector. Fluorescent Leak Detector.
NO-2 - GO TO 2 after repairing or replacing the parts according to the inspection results.
2.CHECK CHARGED REFRIGERANT AMOUNT
1. Connect recovery/recycling recharging equipment to the vehicle and discharge the refrigerant.
2. Recharge with the proper amount of refrigerant and perform the inspection with the refrigerant leakage detecting fluorescent leak detector. Fluorescent Leak Detector.
Is the inspection result normal?
YES - GO TO 3.
NO - Refill the refrigerant and repair or replace the parts according to the inspection results.
3.CHECK REFRIGERANT CYCLE PRESSURE
Connect recovery/recycling recharging equipment to the vehicle and perform the performance test. Performance Chart.
Is the inspection result normal?
YES - GO TO 4.
NO - Perform the diagnosis with the gauge pressure. Trouble Diagnosis For Unusual Pressure.
4.CHECK SETTING OF TEMPERATURE SETTING TRIMMER
Check the setting of temperature setting trimmer. Temperature Setting Trimmer.
1. Check that the temperature setting trimmer is set to "+ direction".

NOTE:
The control temperature can be set with the setting of temperature setting trimmer.
2. Set temperature control dial to "0".
Are the symptoms solved?
YES - Perform the setting separately if necessary. END.
NO - GO TO 5.
5.PERFORM SELF-DIAGNOSIS STEP-2
Perform self-diagnosis STEP-2. Diagnosis Description Unified Meter & A/C Amp., see Nos. 1 to 2.
Does code No. 20 appear on the display?
YES - GO TO 6.
NO - Go to appropriate malfunctioning sensor circuit. Diagnosis Description Unified Meter & A/C Amp., see
No. 11.
6.PERFORM SELF-DIAGNOSIS STEP-4
Perform self-diagnosis STEP-4. Diagnosis Description Unified Meter & A/C Amp., see Nos.1 to 5.
Is it operated normally?
YES - GO TO 7.
NO - Perform the diagnosis applicable to each output device.
7.PERFORM SELF-DIAGNOSIS STEP-5
Perform self-diagnosis STEP-5. Diagnosis Description Unified Meter & A/C Amp., see Nos.1 to 10.
Is the inspection result normal?
YES - GO TO 8.
NO - Go to appropriate malfunctioning sensor circuit. Diagnosis Description Unified Meter & A/C Amp..
8.CHECK DRIVE BELT
Check tension of the drive belt. Procedures.
Is the inspection result normal?
YES - GO TO 9.
NO - Adjust or replace drive belt.
9.CHECK AIR LEAKAGE FROM DUCT
Check duct and nozzle, etc. of A/C system for air leakage.
Is the inspection result normal?
YES - GO TO 10.
NO - Repair or replace parts according to the inspection results.
10.CHECK ECV
Perform the ECV diagnosis procedure. ECV (Electrical Control Valve).
Is the inspection result normal?
YES - Replace the unified meter and A/C amp.
NO - Replace the compressor.