"O/D OFF" Lamp Blinks or Repeats Bright/Dim Continuously

"O/D OFF" Lamp Blinks or Repeats Bright/Dim Continuously at Ignition Switch ON





Wiring Diagram

Circuit Description
Operation (ON/OFF) of the "O/D OFF" lamp (3) is controlled by transmission control module (TCM (7)).
When the ignition switch (2) is turned ON with the O/D cut switch (6) OFF and malfunction is not detected, TCM turns the "O/D OFF" lamp ON only for 2 seconds 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 warm the driver of such occurrence of trouble.
When A/T diagnosis switch terminal (5) is grounded by using service wire for DTC check, the "O/D OFF" lamp indicates DTC by blinking pattern.





Troubleshooting