Trunk / Liftgate: Description and Operation

CIRCUIT OPERATION
The Hatch Release Relay has voltage applied from the PWR ACCY Fuse 7 which is controlled by the Retained Accessory Power (RAP) Module. Voltage is applied to the PWR ACCY Fuse 7 for up to 10 minutes after the Ignition is turned off, or for 35 seconds after exiting the vehicle and closing the doors or whenever a door is open. For a complete understanding of the Retained Accessory Power (RAP) operation, Refer to Accessory Delay Module. Accessory Delay Module

The Hatch Release can be activated from within the vehicle by operating the Hatch Release Switch when the Ignition is in "ACCY", "RUN" or "RETAINED ACCESSORY POWER" with the Park Brake set for Manual Transmission or in "PARK" or "NEUTRAL" position for Automatic Transmission.

Battery voltage is applied at all times to the normally open contacts of the Hatch Release Relay from Courtesy Fuse 8.

when the Hatch Release Switch is operated, the switch closes and battery voltage is applied to the coil of the Hatch Release Relay. On vehicles with Automatic Transmissions, the Hatch Release Relay Coil receives a ground through the Transmission Range Switch to G103 (V8 VIN P) or G104 (V6 VIN S), the Hatch Release Relay can only be energized with the Gear Selector in the "PARK" or "NEUTRAL" position. On vehicles with Manual Transmissions, the Hatch Release Relay Coil receives a ground through the Park Brake Switch when the Park Brake is "ON." For vehicles equipped with Daytime Running Lights (DRL), ground is provided through the Park Brake Switch and a Circuit Isolation Diode within the DRL Module.

When the Hatch Release Relay is energized and the relay contacts close, battery voltage is applied to the Hatch Release Actuator. The Hatch Release Actuator contains an Electronic Circuit Breaker (ECB). ECB resistance increases if motor is overloaded. Resistance returns to normal after voltage is removed from actuator terminals.