Remote Vehicle Start Circuit Description/Active

The BCM receives a signal from the keyless entry transmitter indicating a remote vehicle start request. The BCM uses the following inputs to verify the system is ready for a remote vehicle start event:

• Vehicle is not in valet mode
• Low fuel level indicator is not requested on
• All vehicle doors are closed
• Rear compartment lid is not ajar
• The hood is closed
• The doors are locked
• The hazard switch is OFF
• Battery reconnect has not occurred
• Vehicle power mode is correct

When the BCM determines all conditions meet those required for a remote vehicle start event, a message is sent via serial data to the ECM. The ECM relies on the remote vehicle start message from the BCM to enable remote vehicle start when the crank request signal is received. If the ECM does not receive a valid remote vehicle start message, it will not ground the control circuit of the crank relay and start the engine. While the ECM is in remote vehicle start mode it will cut fuel to the engine if any of the following additional conditions occur:

• Vehicle speed is greater than 0
• Transmission is not in P
• Excessive engine coolant temperature
• Low oil pressure
• The malfunction indicator lamp (MIL) is commanded ON
• Engine crank time is greater than 30 seconds
• Excessive engine speed
• Accelerator pedal position too high
• Remote start timer equals 0
• Immobilizer system indicates a theft attempt