RVS Circuit Description

WARNING: This page is about a different car, the 2007 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.

All vehicle doors are closed
A valid hood ajar switch closed signal is present
The doors are locked
The hazard switch is OFF
The vehicle power mode is correct
No content theft deterrent (CTD) alarm triggers are present
The vehicle is not in valet mode (if equipped)

When the BCM determines all conditions meet those required for an RVS event, a message is sent via serial data to the ECM. 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 attempt to start the engine. While the ECM is in RVS mode it will suspend engine operation if any of the following additional conditions occur:

Vehicle speed is greater than 0
Transmission is not in PARK
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 tamper