TROUBLE SYMPTOM CHART


caution Since the A/C is equipped with no warning lamp or similar devices, check the diagnosis code of the A/C-ECU and compressor & heater controller first, and then perform the trouble symptom inspection procedure.
Trouble symptoms
Inspection procedure number
Reference page
No cool air flows out.
1

Heater does not work at all, heater does not work quickly.
2

Blower does not work.
3

Blower air volume cannot be changed.
4

Air recirculation/fresh air selection is not possible.
5

MAX switch operation is not accepted
6

Compressor & heater controller power supply system
7

The A/C-ECU cannot communicate with M.U.T.-III..
8

The compressor & heater controller cannot communicate with M.U.T.-III.
9