Wipers and Washers - Rear: Notes
Overview
The rear window wiper system is activated by the wiper/washer switch. The rear wiper motor is controlled by the windshield wiper motor. The following functions of the rear window wiper/washer system are available:
- Rear window wipe/wash
- Reverse gear wipe
System Operation
System Diagram
SCCM Network Message Chart
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Transmission in reverse | PCM | Used by the SCCM to operate the reverse gear wipe function. |
| Reverse Gear Wipe ON/OFF | IPC | Used by the SCCM to to toggle the reverse gear wipe function ON and OFF. |
Washer System
When the wiper/washer switch is placed in the rear WASH position, the SCCM sends the request to the windshield wiper motor through the LIN. The windshield wiper motor grounds the rear washer relay directing washer fluid to the rear window.
Reverse Gear Wipe
When the wiper/washer switch is in any position other than OFF (or moisture is detected on the windshield if equipped with rain sensitive wipers) and the transmission selector lever is placed in the REVERSE position, the rear window wiper activates automatically. This feature can be enabled/disabled through the message center. For additional information on enabling/disabling this feature, refer to the Owner's Literature.
Rear Wiper Operation
When the wiper/washer switch is in the INT 1 or INT 2 position, the SCCM sends the request to the windshield wiper motor through the LIN. When the request is received, the windshield wiper motor supplies a ground signal to an integral relay within the rear window wiper motor which activates the motor. The position of the wiper/washer switch determines how often the windshield wiper motor supplies the ground signal. The rear window wiper motor is self parking.