I/P Dimmer Switch

The I/P dimmer switch allows the operator to turn on the interior courtesy lights from inside the vehicle. When the I/P dimmer switch is in the DOME position, the switch sends a ground signal to the BCM through circuit 156. This action causes the BCM to turn on the interior courtesy lights. When the I/P dimmer switch is off, the BCM turns off the interior courtesy lights. The I/P dimmer switch is protected by the inadvertent load (battery rundown) protection in case the I/P dimmer switch is left in the DOME position with the ignition switch in the LOCK or OFF position.

The I/P dimmer switch is also used to change the interior lighting modes during feature customization. Refer to Feature Customization for more information. In addition, the I/P dimmer switch is also used to enter the Input/Output test during BCM diagnostics. Feature Customization - Interior Lights