RVS Circuit Description

The RCDLR receives a signal from the keyless entry transmitter indicating a RVS request. A message is then sent to the BCM which determines if a crank request message will be sent to the ECM to activate RVS. The BCM looks at the following inputs:

• Vehicle is not in valet mode
• All vehicle doors are closed
• No keyless entry transmitters are inside the vehicle
• Rear compartment lid is not ajar
• A valid hood ajar switch closed signal
• 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 an RVS event, a message is sent via serial data to the BCM. The ECM relies on the RVS message from BCM, to enable RVS when the crank request signal is received. If the ECM does not receive a valid RVS message, it will not ground the control circuit of the crank relay and start the engine. While the ECM is in RVS 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.
• Vehicle Theft Deterrent (VTD) tamper.