Operation CHARM: Car repair manuals for everyone.

HVAC System





1. Diode pack.
2. Resistors.
3. Fan speed switch.
4. Air conditioning/re-circa/fresh air switch.
5. Heater/air conditioning relay.
6. Cable connection to ECU (EFI).
7. Fuse C9 - main fuse panel.
8. Face vent switch.
9. Condenser fan relay.
10. Two level resistor.
11. Compressor clutch relay.
12. Thermostat.
13. Fuse B7.
14. Fuse B8.
15. Fuse B9.
16. Compressor clutch.
17. Air conditioning motors (2) - dashboard unit.
18. Heater motor.
19. Fresh air solenoid.
20. Condenser fan motors.
21. Low Pressure switch.
22. High pressure switch.
23. Engine coolant temperature switch.
24. 12V from terminal post.
25. Heater/air con load relay
26. 12V from ignition load relay


NOTE: See EFI circuit diagram for details of air conditioning inputs to ECU.

Cable Color Code
B Black
N Brown
R Red
W White
G Green
0 Orange
S Grey
Y Yellow
L Light
P Purple
U Blue

The last letter of a color code denotes the tracer.