Component Description

Starting System - with Intelligent Access (IA)

Component Description

Body Control Module (BCM)

The BCM (Body Control Module) is the gateway module, translating messages on the HS-CAN (High Speed Controller Area Network) to MS-CAN (Medium Speed Controller Area Network). This allows a message to be distributed throughout both networks.

Intelligent Access (IA) Key

The IA (Intelligent Access) key incorporates both the PATS (Passive Anti-Theft System) and the RKE (Remote Keyless Entry) transmitter functions in a single device. The IA (Intelligent Access) key must be located inside the vehicle for engine starting. When the IA (Intelligent Access) key is activated it sends out a frequency signal that is received by the TPM (Tire Pressure Monitor Module). The IA (Intelligent Access) key also contains a key blade that is used to enter the vehicle as a backup.

Start-Stop Switch

The start/stop switch is a momentary contact switch that is hardwired to the RFA (Remote Function Actuator) module, BCM (Body Control Module), and PCM (Powertrain Control Module). When the switch is pressed, it signals the RFA (Remote Function Actuator) module, BCM (Body Control Module) and PCM (Powertrain Control Module) that there is a request to either switch the ignition on or start the engine. The start/stop switch is connected to both modules as a backup in case of a failure. If there is a circuit failure to either module from the start/stop switch, the modules communicate the start/stop switch request to each other over the Medium Speed Controller Area Network (MS-CAN).

Remote Function Actuator (RFA) Module

The RFA (Remote Function Actuator) module interprets radio frequency signals from the TPM (Tire Pressure Monitor) module and IA (Intelligent Access) key transmitters. The RFA (Remote Function Actuator) module receives input signals from various modules and other components. Based on this information, the RFA (Remote Function Actuator) module generates an output signal to control various components (door locks, liftgate, etc.).

Powertrain Control Module (PCM)

The PCM (Powertrain Control Module) receives input signals from sensors and other components (switches, relays). Based on this information, the PCM (Powertrain Control Module) generates output signals to control various relays, solenoids and actuators.

Tire Pressure Monitor (TPM) Module

The TPM (Tire Pressure Monitor) module is a receiving antenna that receives high frequency signals. When a remote start request is initiated from the IA (Intelligent Access) key the TPM (Tire Pressure Monitor) module receives the signal and communicates the remote start request message to the RFA (Remote Function Actuator) module. The RFA (Remote Function Actuator) module transmits the message via the MS-CAN (Medium Speed Controller Area Network) to the BCM (Body Control Module) to initiate a remote start event.

Transmission Range (TR) Sensor

The TR (Transmission Range) sensor is located inside of the transaxle and indicates gearshift position to the PCM (Powertrain Control Module). The PCM (Powertrain Control Module) uses that information to enable the starting system to start the engine in PARK or NEUTRAL. REFER to Sensors and Switches .