Input 1

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Cargo Lamp Switch: The scan tool displays the state of the switch. The scan tool displays ON when the cargo lights are requested by activation of the switch.

Drivers Door Jamb Sw.: The scan tool displays the position of the drivers door. The scan tool displays ACTIVE when the drivers door is open.

Horn Relay Input: The scan tool displays the state of the horn relay. The scan tool displays ACTIVE when the BCM senses that the horn relay is being commanded ON by the relay coil circuit being grounded.

Ignition 1: The scan tool displays the position of the ignition switch. The scan tool displays ACTIVE when the ignition switch is in the RUN or CRANK position.

Ignition 3: The scan tool displays the position of the ignition switch. The scan tool displays ACTIVE when the ignition switch is in the RUN position only.

Ignition Power Mode: The scan tool displays the position of the ignition switch. The scan tool displays OFF, RUN, CRANK and UNKNOWN. The UNKNOWN display is when the BCM can not determine the position of the ignition switch (between the OFF and RUN positions).

Last RFA Cmd. Since Wake-Up: The scan tool displays the last RFA commanded message from the BCM. The scan tool displays NONE when the BCM awakens from asleep status without receiving a RFA module request from a programmed key fob. The scan tool displays LOCK, UNLOCK or PANIC when the BCM is awake and a command is activated from the key fob to the RFA module.

Park Brake Switch: The scan tool displays the position of the park brake pedal. The scan tool displays SET when the park brake is depressed (switch closed). The BCM uses this data in controlling the operation of the park brake indicator, the reminder chime feature and the headlamp/DRL system.

Pass Door Unlock Input: The scan tool displays the state of the passenger door unlock relay. The scan tool displays ACTIVE when the BCM senses that the passenger door unlock relay is being energized.

RFA Message Since Wake-Up: The scan tool displays the last message sent to the BCM from the remote control door lock receiver.

RAP Relay Feedback: The scan tool displays the state of the RAP relay. The scan tool displays ON when the BCM activates the RAP relay.