Reading DTC Using "O/D OFF" Lamp

Turn ignition switch OFF.
Remove steering column hole cover (1).
Using service wire, connect diagnosis switch terminal (3) of monitor connector (2) to ground terminal (4).

Fig 1: Identifying Monitor Connector, Terminals & Steering Column Hole Cover
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Turn ignition switch ON.
Read flashing pattern of "O/D OFF" lamp which represents DTC as shown in example below and write it down.

Fig 2: Flashing Pattern - Shift Solenoid Control Circuit High (DTC 21)
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After completing the check, turn ignition switch OFF and disconnect service wire from monitor connector.