Doors, Hood and Trunk: Description and Operation

Hood Ajar Indicator Description and Operation

Hood Ajar Indicator System Components

* Body control module (BCM)
* Hybrid Powertrain Control Module 2
* Driver information center
* Hood ajar switch, part of the hood latch assembly

Hood Ajar Operation - Body Control Module

The BCM applies B+ to the hood ajar signal circuit and monitors the voltage to determine the position of the hood. The hood ajar switch contains a multiplexed resistor. This resistor will vary the voltage seen by the BCM by pulling down the applied voltage based on the position of the switch.

Hood Ajar Operation - Hybrid Powertrain Control Module 2

The hybrid powertrain control module 2 applies B+ to the hood ajar signal circuit and monitors the voltage to determine the position of the hood. The hood ajar switch contains a multiplexed resistor. This resistor will vary the voltage seen by the hybrid powertrain control module 2 by pulling down the applied voltage based on the position of the switch.