Speed Control - Description

DESCRIPTION

An electronic speed control (also known as cruise control) system is standard factory-installed equipment on this vehicle. The electronic speed control system includes the following major components, which are described in further detail elsewhere in this service information:

- Body Control Module - The Body Control Module (BCM) located in the passenger compartment receives the hard wired inputs from the cruise control switches and the stop lamp switch, then relays those inputs to the Powertrain Control Module (PCM) over the Controller Area Network (CAN) data bus. Body Control Module - Description.
- Brake Lamp Switch - The brake (also known as stop) lamp switch is located on the brake pedal support bracket under the driver side of the instrument panel. Stop Lamp Switch - Description.
- Clutch Switch - The clutch switch (manual transmission only) is located on the clutch pedal support bracket under the driver side of the instrument panel.
- Instrument Panel Cluster - A CRUISE indicator is located in the Instrument Panel Cluster (IPC) that provides an indication to the vehicle operator when the speed control system is turned ON. Instrument Cluster - Description.
- Powertrain Control Module - The Powertrain Control Module (PCM) located in the engine compartment contains the software and hardware that monitors all of the speed control system inputs and controls all of the speed control system outputs. Description and Operation.
- Speed Control Switches - A speed control switch pod containing four momentary switch push buttons is located in the right horizontal spoke of the steering wheel.
- Wheel Speed Sensors - A wheel speed sensor is located on the knuckle of each front and rear wheel. Front.

The BCM, the PCM and the IPC each contain a microprocessor and programming that allow them to communicate with each other using the Controller Area Network (CAN) data bus. This method of communication is used by the BCM to relay the status of the speed control switches to the PCM, and by the PCM for control of the CRUISE indicator in the IPC. Communication - Description.

Hard wired circuitry connects the electronic speed control 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 speed control 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.