Key Resistor Inputs

The key resistor inputs are used to determine if the correct ignition key is being used to start the vehicle. The key resistor inputs are read when the ignition is turned on. If the key code (resistance value) of the ignition key matches the value stored in the BCM, the theft deterrent relay and fuel enable output will allow the vehicle to start. If the resistance value of the ignition key does not match the value stored in the BCM, the relay and fuel enable output will not allow the vehicle to start.