Rear Interval Wiper Control

The GEM responds to the rear wiper control commands by interpreting inputs from the rear wiper mode wash switch. There are two modes of operation for the rear wiper: INTERVAL and LOW. In the low speed setting, there is no dwell time. There will be two interval wiper settings to provide the following rear wiper dwell times.
^ Setting 1 is 12 Seconds Dwell.
^ Setting 2 is 6 Seconds Dwell.

NOTE: The GEM does not control the rear washer.

The GEM relay drivers control two external relays: rear wiper up relay, and rear wiper down relay. When the washer input on the rear wiper mode/wash switch is activated longer than 300 ms, the wash and wiper functions are provided until the switch is released. The release of the switch will be followed by three low speed wipes. In the OFF position, if the switch is pressed between 100 ms and 200 ms, the wiper system will provide one wipe at low speed with no wash.