1 Drive the vehicle until transmission reaches operating temperature.
2 With ignition ON and engine OFF place gear selector into D position.
3 Turn the O/D switch to OFF.
4 Cycle the ignition switch OFF-ON.
5 Move the gear selector into position 2.
6 Turn the O/D switch to ON.
7 Move the gear selector into position 1.
8 Turn the O/D switch to OFF.
9 Depress the throttle pedal and release.
10 The Power Light on either the instrument cluster or the Power switch will begin flashing.
11 Read codes as described in the Code Format Description below.
12 Press the continue button to enter the code numbers and get the code description.