A-1 "O/D Off" Lamp Circuit Check - Lamp Does Not Light

WIRING DIAGRAM

CIRCUIT DESCRIPTION
Operation (ON/OFF) of the "O/D OFF" lamp is controlled by transmission control module (TCM). When the ignition switch is turned ON with the O/D cut switch OFF (switch button is pushed) and malfunction is not detected, TCM turns the "O/D OFF" lamp ON only for 2 sec. to check the bulb and turns it OFF. When ignition switch is turned ON regardless of engine running or not and malfunction is detected, the "O/D OFF" lamp is blinked by TCM to warn the driver of such occurrence of trouble. When A/T diagnosis switch terminal is grounded by using service wire for DTC check, the "O/D OFF" lamp indicates DTC by blinking pattern.





INSPECTION