Tacoma PreRunner Extra Cab 2WD L4-2.7L (3RZ-FE) (1998)
Power Mirror Motor: Testing and Inspection
INSPECT MIRROR MOTOR OPERATION
a. Connect the positive (+) lead from the battery to terminal 3 and negative (-) lead to terminal 1. Check that the mirror turns to left side.
b. Remove the polarity and check that the mirror turns to right side.
c. Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1. Check that the mirror turns upward.
d. Reverse the polarity, check that the mirror turns downward.
If operation is not as specified, replace the mirror assembly.