Inadvertent Power

At the Body Control Module (SBM) connector C1 cavity D1, inadvertent power is both an output and an input. The inadvertent power is either an output or an input, but never both. When the inadvertent power output is inactive, activating any lamp switch grounds the inadvertent power input through the lamp. As a result of the input, the SBM will activate the inadvertent power output.

The inadvertent power output supplies battery positive voltage (B+) to the lamps on CKT 1732 (ORN). Any of these lamps may drain the battery if you leave the lamps on. The SBM has a battery protection feature in order to protect the electrical system from these unwanted loads. The following 4 conditions may activate the inadvertent power output:
1. The ignition switch is in RUN.
2. The inadvertent power output is inactive and the inadvertent power input receives an active lamp input.
3. Any door opens.
4. The SBM receives an input from the Remote Function Actuator (RFA) module.

The SBM deactivates the inadvertent power output if any lamp is active for more than 10 minutes and the ignition switch is OFF during the entire period.