Use the table below to help you to find the cause of the problems. The
numbers indicate the priority of the
likely cause of the problem. Check each part in order. If necessary, replace
these parts.
Symptom |
Suspect Area |
Whole functions of the A/C system does not operate. |
- HTR fuse (50 A)
- HTR fuse (10 A)
- A/C fuse
- HTR relay
- A/C control assy
- Wire harness or connector
|
Air Flow Control : No blower operation |
- Heater blower motor relay
- Blower w/ fan motor sub−assy
- A/C control assy
- Wire harness or connector
|
Air Flow Control : No blower control |
- Blower w/ fan motor sub−assy
- Blower resistor
- A/C control assy
- Wire harness or connector
|
Air Flow Control : Insufficient air flow |
- Blower w/ fan motor sub−assy
- A/C control assy
- Wire harness or connector
|
Temperature Control : No cool air comes out |
- Volume of refrigerant
- Drive belt tension
- Cooler compressor assy
- Refrigerant pressure
- Pressure switch No.1
- Air mix damper servo sub−assy
- Condenser fan
- A/C control assy
- Wire harness or connector
|
Temperature Control : No warm air comes out |
- Engine coolant volume
- Air mix damper servo sub−assy
- Cooler thermistor No.1
- A/C control assy
- Heater radiator unit sub−assy
- Wire harness or connector
|
Temperature Control : Out coming air is warmer or cooler than the
set temperature or response is slow. |
- Air mix damper servo sub−assy
- A/C control assy
- Wire harness or connector
|
Temperature Control : No temperature control
(only Max. cool or Max. warm) |
- Air mix damper servo sub−assy
- A/C control assy
- Wire harness or connector
|
No air inlet control |
- Recirculation damper servo sub−assy
- A/C control assy
- Wire harness or connector
|
No air outlet control |
- Mode damper servo sub−assy
- A/C control assy
- Wire harness or connector
|
No engine idle−up when A/C switch ON |
- Cooler compressor assy
- A/C control assy
- 1MZ−FE, 3MZ−FE:
ECM
- Wire harness or connector
|
Brightness does not changes when rheostat volume or light control
switch it turned. |
- Illumination light system
- A/C control assy
- Wire harness or connector
|