Air Conditioning System Problem Symptoms Table - Toyota Avensis ZZT251 2003 Service And Repair Manual

55–6
PROBLEM SYMPTOMS TABLE
Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely
cause of the problem. Check each part in order. If necessary, replace these parts.
Symptom
Whole functions of the A/C system does not operate.
Air Flow Control : No blower operation
Air Flow Control : No blower control
Air Flow Control : Insufficient air out
Temperature Control : No cool air comes out
Temperature Control : No warm air comes out
Temperature Control : Output air is warmer or cooler than the set
temperature or response is slow.
Temperature Control : No temperature control
No air inlet control
No air outlet control
Engine idle up does not occur, or is continuous
Brightness does not changes when rheostat volume or light con-
trol switch it turned.
AVENSIS REPAIR MANUAL (RM1018E)
HEATER & AIR CONDITIONER
4. ECU–B fuse
5. A/C amplifier assy
6. Wire harness or connector
1. Blower resistor
2. Heater relay
3. Blower w/ fan motor sub–assy
4. A/C amplifier assy
5. Wire harness or connector
1. Blower w/fan motor sub–assy
2. Blower resistor
3. A/C amplifier assy
4. Wire harness or connector
1. Blower w/fan motor sub–assy
2. Blower resistor
3. A/C amplifier assy
4. Wire harness or connector
1. Volume of refrigerant
2. Drive belt tension
3. Refrigerant pressure
4. Cooler compressor assy
5. Pressure sensor
6. Condenser fan
7. Air mix damper servo sub–assy
8. A/C amplifier assy
9. Wire harness or connector
1. Engine coolant volume
2. Cooler thermistor No.1
3. Air mix damper servo sub–assy
4. A/C amplifier assy
5. Heater radiator unit sub–assy
6. Wire harness or connector
1. A/C amplifier assy
2. Air mix damper servo sub–assy
3. Air mix level
1. A/C amplifier assy
2. Air mix damper servo sub–assy
3. Air mix level
1. Recirculation damper servo sub–assy
2. A/C amplifier assy
3. Wire harness or connector
1. A/C amplifier assy
2. Mode damper servo sub–assy
3. Mode lever
1. Idle up switch
2. Cooler compressor assy
3. A/C amplifier assy
4. Wire harness or connector
1. Illumination light system
2. A/C amplifier assy
3. Wire harness or connector
http://vnx.su
– AIR CONDITIONING SYSTEM
Suspect Area
550RQ–02
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