Celica GT-S L4-1.8L (2ZZ-GE) (2000)
Control Assembly: Testing and Inspection
On-Vehicle Inspection
INSPECT HEATER CONTROL DIALS OPERATION
Turn the control lever and 2 control dials left and right then check that click sound can be heard and recoil is felt.
If click sound can not be heard or recoil is felt, adjust the control cable or check control cable and heater control assembly.