Contents: Examination ↓ Replacement ↓
Wiring diagram of the air conditioning system
1. Battery; 2. Main fuse; 3. Additional fuse; 4. Ignition switch; 5. Heater relay; 6. Electric motor; 7. Resistor; 8. Electric motor relay; 9. Fan switch; 10. Air conditioner switch; 11. To the rheostat; 12. Air conditioning pressure sensor; 13. Electromagnetic clutch; 14. Amplifier; 15. Thermistor; 16. Cut-off temperature relay
Location of heating and air conditioning units
1. Heater; 2. Cooling unit; 3. Evaporator; 4. Expansion valve; 5. Fan; 6, 13. Electric motor; 7. Air damper motor; 8. Amplifier; 9, 12. Fan resistor; 10. Fan speed switching relay; 11. Cut-off temperature relay; 14. Rear heater; 15, 23. Radiator; 16. Thermistor; 17. Mixing flap electric motor; 18. Rear heater relay; 19. Rear heater switch; 20. Air conditioning control panel; 21. Mixing flap electric motor amplifier; 22. Ventilation nozzle electric motor; 24. Crane; 25. Thermal relay; 26. Pressure relay; 27. Moisture separator; 28. Capacitor; 29. Compressor
Heater Motor Connector and Connector Wiring
The article is taken from a web resource [TOYOTAMAN.ru]
1. 80 Series Front Heater Connector
2. Rear Heater Connector Series 80
The heater blower unit is mounted under the dashboard, or in the passenger compartment on vehicles with rear air conditioning.
Examination
Attention! When working on the heater of some vehicles, turn off the airbag. To do this, turn the ignition key to the LOCK position, disconnect the battery from the ground and start work no earlier than 2 minutes later.
1. If the fan fails, check the fuse, the condition of the contacts and wires, and the battery charge level.
2. Check for battery voltage at the motor connector (turn on the ignition and move the fan handle to the ON position).
3. If there is no voltage, then there is a break in the wires from the ignition switch or from the switch.
4. If voltage is present, connect the connector and connect the ground terminal to ground by connecting the jumper to the back of the connector.
5. If the fan does not turn on, the electric motor may be faulty.
6. In this case, connect the motor terminals directly to the battery and ground using wires protected by fuses.
7. If the electric motor does not turn on, it must be replaced.
8. If the engine is OK, check the resistor or switch by removing the heater control panel (see subsection 4.11).
Replacement
1. Disconnect the connector, remove the connector bracket, unscrew the 3 screws and remove the blower unit from the casing.
2. The impeller can be removed and installed on a new electric motor.
3. Installation is carried out in reverse order.