Visual Confirmation Feature: Notes

Fig 1: Identifying Front Lamp Positions

Courtesy of GENERAL MOTORS CORP.

The BCM cycles the park lamp relay once for visual confirmation of the LOCK function when the power door LOCK command is initiated by the RKE system. The BCM cycles the park lamp relay twice for visual confirmation of the UNLOCK function when the power door UNLOCK command is initiated by the RKE system. This feedback interrupts the current commanded state of the park lamps (2) if operating with the ignition in the LOCK/OFF position; then, cycle the park lamps and restore them to the current commanded state. Thus, the lights will sequence OFF, then go back to normal ON operation if the park lamps are in ON position. The lights will sequence ON, then go back to normal OFF operation if the park lamps are in the OFF position. The RKE park lamp flash sequence of the LOCK command (one cycle) completes when an UNLOCK signal initiates immediately after a LOCK signal. Upon the LOCK park lamp cycle completion, the UNLOCK flash sequence (twice) executes and vice versa.