Celica L4-1.8L (2ZZ-GE) (2005)
Control Assembly: Testing and Inspection
Component Inspection
INSPECTION
1. INSPECT ILLUMINATION OPERATION
Connect the positive (+) lead from the battery to terminal 7 and negative (-) lead to terminal 4 then check that the illuminations lights up.
If operation is not as specified, check the faulty bulb.
2. INSPECT BULB
Apply the tester as shown in the illustration to the test for continuity.
If continuity exists, replace the heater control.
If no continuity exists, replace the bulb.
3. INSPECT A/C INDICATOR OPERATION
a. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 3 and 10.
b. Push the A/C button in and then check that the indicator lights up.
If operation is not as specified, replace the switch.