I copied the following from a service manual identified as 2013/2014 years. Ian would likely know if this applied to both years. His post is available here;
Has anyone found a 4th generation service manual in a PDF format? If so can you please share the link? I can't get the McFall one to work on my phone. Thanks!
www.ramforum.com
I searched the manual for wiper relay, there was 2 locations. Unfortunately, the manual makes reference to the wiper relays but the only details is that they are located on the PDM on non-serviceable. I hope your lead is more productive.
Wiper Relays - The wiper high and low relay and the wiper on and off relay are both soldered onto the Printed Circuit Board (PCB) located within the Power Distribution Center (PDC) and are not serviceable. The PDC is located in the left front corner of the engine compartment just forward of the battery.
Certain functions and features of the wiper and washer systems rely upon resources shared with other electronic modules in the vehicle over a Local Interface Network (LIN) data bus as well as over the Controller Area Network (CAN) data bus. Other electronic modules in the vehicle that may affect wiper and washer system operation are:
Body Control Module - The Body Control Module (BCM) (also known as the Common Body Controller/CBC) is located on the upper left corner of the dash panel within the passenger compartment, where it is concealed behind the instrument panel to the left of the steering column and pedal support bracket. Refer to MODULE, BODY CONTROL, DESCRIPTION .
Clockspring - The clockspring is completely concealed beneath the shrouds at the top of the steering column, just below the steering wheel. The clockspring also includes a Steering Angle Sensor (SAS) that is secured to the back of the clockspring housing and is serviced only as a unit with the clockspring. The clockspring housing is constructed of molded black plastic and is secured to the steering column by three screws. Refer to CLOCKSPRING, DESCRIPTION .
Light Rain Sensor Module - A Light Rain Sensor Module (LRSM) (also known as the Light Sensor Module/LSM, the Rain Sensor Module/RSM or the Rain Light Sensor/RLS) is used on vehicles equipped with the optional automatic wiper feature. The LRSM is located on a bracket bonded to the inside surface of the windshield glass, near the inside rear view mirror mount.
Multifunction Switch - The only visible component of the multifunction switch (1) is the control stalk, which includes a control knob that extends through the shrouds on the left side of the steering column. The switch housing and control stalk are constructed of molded black plastic. A single integral latch feature and slide tabs on the switch housing engage channels and a striker that are integral to the left side of the mounting bracket that is integral to the clockspring. The multifunction switch includes an integral Local Interface Network (LIN) data bus ***** node. The multifunction switch is available for separate service replacement. Refer to SWITCH,MULTIFUNCTION, DESCRIPTION .
Steering Angle Sensor - The Steering Angle Sensor (SAS) is completely concealed on the back of the clockspring housing beneath the shrouds at the top of the steering column. The SAS housing is constructed of molded black plastic and is serviced only as a unit with the clockspring. The SAS includes an integral Local Interface Network (LIN) data bus master node and is also a gateway to the Controller Area Network (CAN) data bus network.
The BCM and the SAS each contain a microcontroller and programming that allow them to communicate with each other and other electronic modules in the vehicle using the Controller Area Network (CAN) data bus. In addition the multifunction switch and the SAS communicate with each other, and the BCM and the RLSM communicate with each other using the Local Interface Network data bus. Refer to COMMUNICATION, DESCRIPTION .
Hard wired circuitry connects the wiper and washer system components to the electrical system of the vehicle. These hard wired circuits are integral to several wire harnesses, which are routed throughout the vehicle and retained by many different methods. These circuits may be connected to each other, to the vehicle electrical system and to the wiper and washer system components through the use of a combination of soldered splices, splice block connectors, and many different types of wire harness terminal connectors and insulators.
Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin out and location views for the various wire harness connectors, splices and grounds.
