Chevrolet Workshop Manuals
Express 1500 RWD V8-5.3L VIN T (2004)
Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Accessory Delay Module > Component Information > Diagrams > Page 51
Accessory Delay Module: Description and Operation
RETAINED ACCESSORY POWER (RAP) DESCRIPTION AND OPERATION
RETAINED ACCESSORY POWER (RAP) POWER MODE
RAP is a power mode that permits the operation of some accessories for up to 10 minutes after the ignition switch is turned OFF. The RAP power
Controls certain body functions.
Sends out a class 2 message via the serial data link, which enables/disables other modules at the beginning/end of the RAP power mode.
Some BCM features, such as the interior courtesy lamps will function after the 10 minute RAP time limit has elapsed. This is normal, and does not
The right and left power windows through the WND RAP relay.
Any class 2 module that functions in RAP power mode and is not connected to the WND RAP relay, is controlled by the BCM via class 2 power
RAP is disabled when:
A door is opened.
Low battery voltage is detected by the BCM.
The ignition switch transitions from OFF to ON or ACC.
10 minutes have elapsed after the ignition was turned OFF.
The BCM monitors the ignition switch position, battery voltage and passenger compartment door status to determine whether RAP power mode
WND RAP RELAY
The BCM controls the WND RAP relay's coil circuit using high side drive. The output of the relay is used to supply battery voltage to the power
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