Remote Start System: Notes

DESCRIPTION 

In addition to the standard starting system components, the remote starting system can consist of the following components:

Refer to POWER DISTRIBUTION CENTER (PDC)	Power Distribution Center (PDC)
Refer to POWERTRAIN CONTROL MODULE (PCM)	Powertrain Control Module (PCM)
Refer to INTELLIGENT BATTERY SENSOR (IBS)	Intelligent Battery Sensor (IBS)
Refer to BODY CONTROL MODULE (BCM)	Body Control Module (BCM)
Refer to REMOTE START ANTENNA (RSA)	Remote Start Antenna (RSA)
Refer to RADIO FREQUENCY HUB (RFH) MODULE	Radio Frequency Hub (RFH) Module
Refer to KEYLESS IGNITION NODE (KIN)	Keyless Ignition Node (KIN)
Refer to INSTRUMENT PANEL CLUSTER (IPC)	Instrument Panel Cluster (IPC)
Refer to HOOD AJAR SWITCH #2	Hood Ajar Switch #2
Refer to REMOTE KEYLESS ENTRY (RKE) KEY FOB	Remote Keyless Entry (RKE) Key Fob
Refer to REMOTE START INHIBITOR COMPONENTS	Remote Start Inhibitor Components

Remote start conveniently starts the engine from outside the vehicle by using the RKE key fob while maintaining security. The system has a targeted range of at least 100 m (328 ft). The vehicle must be locked, the swing gate and hood closed and the transmission in PARK in order to start the engine using the Remote Start button on the key fob.

The remote start system can activate interior illumination, climate control, the optional heated/ventilated seats, and optional heated steering wheel depending on temperatures outside and inside the car. However, operation of the power top and the power windows are inhibited during the remote start event until the driver presses the push start button.

OPERATION 

Remote Start Operation:

• The RFH detects that the remote start button has been pressed twice within five seconds. Note that if the remote start button is pressed again, this will terminate the remote start event.
• The RFH authenticates the key fob.
• The RFH then broadcasts several messages over the a Controller Area Network-Chassis (CAN-C) bus to the BCM indicating the physical position of the key fob, if the ignition is in run or start mode and if the vehicle is equipped with an Electronic Steering Lock (ESL) and the ESL's operative state.
• The BCM then receives the "Starter Enable" request over the CAN-C bus from the RFH.
• The BCM challenges and reads the states of the remote start inhibitors.
• If there are no active inhibitors, the BCM broadcasts the ignition commands request over the CAN-C bus, CAN-Interior High Speed (IHS) bus, and the Local Interface Network (LIN) bus networks. Any module or component that needs to use ignition inputs uses ignition outputs controlled by the BCM.
• The PCM receives the "Starter Enable" request over the CAN-C bus.
• The PCM initiates a minikrypt code exchange with the BCM. The BCM responds to this challenge with a verification acknowledgment to the PCM.
• If the minikrypt code exchange was successful, the PCM applies a Low Side Driver (LSD) as needed to energize the starter relay.
• Starter Relay is actuated. This relay is powered by a dedicated fuse in the PDC allowing the starter to crank.
  NOTE:

  If the minikrypt verification was not successful, the PCM shuts down the engine after two seconds.