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Network Message Chart

SCCM Network Input Messages 

Broadcast Message Originating Module Message Purpose
Vehicle speed PCM The PCM sends this message to the SCCM. The SCCM in turn sends this data to the windshield wiper motor. The windshield wiper motor uses this data for the speed sensitive wiper feature.
Rain sense ON/OFF IPC If equipped, this message toggles the rain sense feature on or off.
Courtesy wipe ON/OFF IPC If equipped, this message toggles the courtesy wipe feature on or off.
Transmission in reverse PCM If equipped with reverse gear wipe, the reverse gear input is used to engage the reverse gear wipe function.

BCM Network Input Messages 

Broadcast Message Originating Module Message Purpose
Wiper motor status SCCM This message is used by the BCM to determine if the exterior lamps need to be turned on/off for the wiper activated exterior lamps feature.
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