1. Main fuse box
2. Generator
3. Ignition switch
4. Circuit fuse box
5. Cassette fuse
6. Cassette fuse
7. Radiator fan motor No.1
8. Radiator fan relay 1 (high)
9. Radiator fan relay 2 (high)
10. Radiator fan relay 3 (low)
11. Radiator fan motor No.2
12. Blower fan relay
13. Blower motor
14. Blower motor resister
15. Blower motor switch
16. A / C switch and mode controller
17. Compressor relay
18. Compressor
19. A / C signal relay
20. Condenser fan motor relay
21. Condenser fan motor control relay
22. Condenser fan motor
23. A / C controller
24. ECM
25. Supplementary heater
26. Supplementary heater relay
27. Supplementary heater switch
28. Radiator fan signal relay
HEATER AND VENTILATION 1A-3
WIRING CIRCUIT
SUPPLEMENTARY HEATER SYSTEM OPERATION
D The supplementary heater relay (26) is turned on when both the radiator signal relay (28) and supplemen-
tary heater switch (27) are turned on.
D The radiator fan signal relay (28) is kept turned on when the radiator fan motors are not operating (no
voltage is applied to the radiator fan signal relay coil).
When the radiator fan motors are in operation, the same voltage is applied to the relay coil, as a result
that the radiator fan signal relay (28) is turned off.
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