INSPECTION PROCEDURE 1. INSPECT INNER REAR VIEW MIRROR ASSEMBLY (w/ EC Mirror) (a) Inspect the operation of the electrochromic inner rear view mirror assembly. 
(1) Connect a positive (+) lead from the battery to terminal 10(+B) and a negative (-) lead to terminal 3(E). (2) Press the EC switch. (3) Attach black colored tape to the forward sensor to prevent it from sensing. (4) Light up the mirror with an electric light, and check that the mirror surface changes from bright to dark. OK: Mirror surface changes from bright to dark. |
Toyota Tundra Service Manual > Trailer Brake Control System: Precaution
PRECAUTION 1. TROUBLESHOOTING PRECAUTIONS (a) When there is a malfunction in the contact point of the terminals or installation problems with parts, removal and installation of the suspected problem parts may return the system to the normal condition either completely or temporarily. (b) To determin ...
