Description And Operation: Operation

The LRSM receives a power supply from the INT circuit protected by a fuse in the Body Control Module (BCM) and sends the BCM the automatic activating signal via the LIN serial bus.

The BCM is connected via the CAN bus to the Instrument Panel Cluster (IPC) to manage the windshield washer liquid level indication and relevant indicators in case of fault to the wiper motor or to the LRSM.

The hardwired circuits of the LRSM may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. However, conventional diagnostic methods will not prove conclusive in the diagnosis of the LRSM or the electronic controls and communication between other modules and devices that provide some features of the automatic wiper system. The most reliable, efficient and accurate means to diagnose the LRSM or the electronic controls and communication related to LRSM operation requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.