Disabling Theft Deterrent

The theft deterrent is disabled from the secure state by the following sequence of operations.

With battery and ignition voltages applied and radio off:
1. Depress preset buttons 1 (PREV) and 4 for 5 seconds. The display will show "SEC", indicating the unit is in the secure state.
2. Using the "HR" and "MIN" buttons, enter any code number. The initial key press of either button will cause the display to indicate "000", the last 3 1/2 digit user code. Subsequent key presses of the "HR" button will cause the left 1 1/2 digits to increment and depressing the "MIN" button will cause the right two digits to increment. The digits will continuously increment at a rate of once every 1 sec. for the first two increments and then once every 250 m/sec, as long as the button is depressed. The digits will also increment by one with every momentary depression.
3. Depress the "AM/FM" button. If the display shows "-", the disabling sequence was successful (the numbers matched the user selected code or the factory backup code)and the unit is in the UNSECURED state. The indicator light will not flash when the ignition is off. If the display shows "SEC", the numbers did not match either of the codes and the unit will remain in the SECURE state. The display will revert to TOD after 15 seconds.