Pressing either the rear compartment release switch located in the glove compartment or the rear compartment release button on the remote coded key releases the rear compartment lid.

Pressing the rear compartment release button on the remote coded key transmits an RF output signal. The body control module (BCM) remote receiver detects this signal and the BCM activates the microprocessor in the BCM.

The rear compartment release switch is disabled when the theft deterrent system is armed via the remote code key or the driver's door microswitch. The rear compartment release switch is only enabled when the theft deterrent system is disarmed either by pressing the unlock button on the remote coded key or when the remote key reader receives a valid security code via the ignition switch.

The BCM monitors the rear compartment release switch and the remote coded key rear compartment signal and prevents the rear compartment release operation if the vehicle speed is above 10 km/h (6 mph).

A significant feature of the Rear Compartment Lid circuit is that the BCM monitors the speed of the vehicle and will not actuate the rear compartment release relay if the vehicle speed is greater than 10 km/h (6 mph), or if the system is armed via the remote coded key.

CIRCUIT OPERATION: Battery voltage is applied to the BCM microprocessor via terminal X1-10, through fusible link F104 and fuse F29 via circuit 740.

The primary serial data bus at BCM terminal X2-5 is connected to the PIM terminal X1-6. Class 2 serial data is connected between PIM terminal X1-7, via circuit 1045, and PCM terminal X1-58. This serial data bus line supplies the BCM with serial data relating to the speed of the vehicle.

The BCM internal status includes the status of the security system (armed, disarmed, triggered, passively armed) and the status of the central locking system (locked, unlocked etc). If the BCM detects the security system as armed, the rear compartment (boot) release function will be inhibited.

Pressing the rear compartment release switch causes the contacts to close, connecting BCM terminal X3-8 to ground via circuit 1576. This causes the voltage at terminal X3-8 to be reduced to less than 0.2 volt, which is seen by the BCM as a rear compartment release switch input signal. The BCM will not actuate the rear compartment release relay if the vehicle speed is greater than 10 km/h (6 MPH), or if the system is armed via the remote coded key.

The BCM activates the Rear Compartment Lid lock actuator by energizing the Boot Solenoid relay. Power from BCM terminal X4-2 is applied to terminal X1-A of the Rear Compartment Lid Actuator Assembly via circuit 56. The ground circuit for the Rear Compartment Lid Actuator Assembly is via circuit 650.