Overdrive (O/D) Switch
WARNING: This page is about a different car, the 2004 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.
The O/D switch transmits a signal to the PCM to select or suppress fourth gear in manual selector lever position "D".
The signal of the O/D switch is used for the following functions:
- as an input signal to convey the driver's intent to the PCM.
- to display the driver's intent with the O/D indicator in the instrument cluster.
No substitute signal is available for the O/D switch. If it should fail, it is always possible to shift into fourth gear in manual selector lever position "D".