Sienna LE V6-3.0L (1MZ-FE) (1998)
Control Assembly: Testing and Inspection
System Inspection Procedures
1. A/C Switch:
INSPECT A/C INDICATOR OPERATION
a. Connect the positive (+) lead from the battery to terminal 6 and negative (-) lead to terminal 4.
b. Push the button in and check that the A/C indicator lights up.
If operation is not as specified, replace the A/C switch.
c. Connect the positive (+) lead from the battery to terminal 3 and check that the indicator dims.
If operation is not as specified, replace the A/C switch.
2. Defroster Mode Switch:
INSPECT A/C INDICATOR OPERATION
a. Connect the positive (+) lead from the battery to terminal 6 and negative (-) lead to terminal 4.
b. Turn the mode dial to the "DEF" position and check that the A/C indicator lights up.
If operation is not as specified, replace the A/C switch.
NOTE: The A/C indicator lights up regardless A/C bottom turn on or not, when the mode dial is DEF.
c. Connect the positive (+) lead from the battery to terminal 3 and check that the indicator dims.
If operation is not as specified, replace the A/C switch.