Circuit Description

Operation (ON/OFF) of the "O/D OFF" lamp is controlled by transmission control module (TCM) and combination meter.

When ignition switch is turned ON and malfunction is not detected, TCM turns "O/D OFF" lamp ON only for 2 seconds to check bulb and terns it OFF.

When communication circuit between TCM and combination meter break down (open or shot), "O/D OFF" lamp blinks only for 10 seconds.