GSIC - Global Service Information Center

# AIR CONDITIONING SYSTEM > PROBLEM SYMPTOMS TABLE

## for Preparation Click here

HINT:

1. Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

1. Inspect the fuses and relays related to this system before inspecting the suspected areas below.

1. If the malfunction still exists even after checking and confirming that all the circuits are normal, replace the A/C amplifier.

A/C system
Symptom | Suspected area | See page
All functions of A/C system do not operate | A/C control assembly | Click here
A/C amplifier assembly | Click here
Wire harness | -
Air flow control: No blower operation | Blower resistor | Click here
Blower w/ fan motor sub-assembly | Click here
A/C control assembly | Click here
Wire harness | -
Air flow control: No blower control | Blower resistor | Click here
A/C control assembly | Click here
Wire harness | -
Air flow control: Insufficient air comes out | Blower w/ fan motor sub-assembly | Click here
Blower resistor | Click here
A/C control assembly | Click here
Wire harness | -
Temperature control: No cool air comes out | Volume of refrigerant | Click here
Drive belt (1TR-FE) | Click here
Drive belt (2TR-FE) | Click here
Drive belt (2KD-FTV) | Click here
Refrigerant pressure | Click here
Cooler compressor assembly (TR Series Engine) | Click here
Cooler compressor assembly (2KD-FTV) | Click here
Magnet clutch relay*1 | Click here
A/C pressure switch | Click here
Air mix control cable | -
A/C control assembly | Click here
Wire harness | -
Temperature control: Output air is warmer or cooler than set temperature or response is slow | Air mix control cable | -
A/C control assembly | Click here
Temperature control: No temperature control | Air mix control cable | -
A/C control assembly | Click here
No air inlet control | Air inlet damper control cable | -
A/C control assembly | Click here
No air outlet control | Mode control cable | -
A/C control assembly | Click here
Engine idle-up does not occur, or is continuous | Cooler compressor assembly (TR Series Engine) | Click here
Cooler compressor assembly (2KD-FTV) | Click here
A/C control assembly | Click here
A/C amplifier assembly | Click here
ECM | Click here
PTC heater does not function*1, *2 | PTC heater relay | Click here
Heater switch assembly | Click here
Air mix control cable | -
A/C control assembly | Click here
A/C unit assembly (Max. HOT switch) | Click here
A/C amplifier assembly | Click here
ECM | Click here
Wire harness | -
Quick heater and accessory assembly | Click here

HINT:

1. *1: w/ PTC heater

1. *2: The PTC heater operation may be stopped when an electrical load is large on the entire vehicle.