Parking, Rear and License Plate Lamps
Overview
The parking lamp system consists of:
- Front parking lamps
- Front side marker lamps
- Rear lamp assemblies
- License plate lamps
- Headlamp switch (integrated into the FLM)
- BCM
The front parking and side marker lamps are integrated into the headlamp assemblies.
The rear parking and side marker lamps are LEDs integrated into the rear lamp assemblies.
System Operation
System Diagram
Network Message Chart BCM Network Message Chart
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Headlamp switch status | FLM | Indicates the headlamp switch position (or fault) to the BCM. When the position is indicated as the PARKING LAMPS ON (or a fault), the BCM provides voltage to the parking lamps and headlamps. |
Parking Lamps
The headlamp switch is integrated into the FLM. The FLM monitors the headlamp switch position and sends the headlamp switch status message over the communication network to the BCM to indicate the headlamp switch status (position or a fault with the headlamp switch).
If the BCM detects a fault from the headlamp switch or loses communication with the FLM, the BCM turns the parking lamps and headlamps on and keeps them on until the battery saver feature times out. Refer to Headlamps , Battery Saver.
If either situation occurs, the BCM cannot be ruled immediately as being at fault. This is normal behavior of the BCM design as a fault has been detected with the inputs from the headlamp switch.
When the BCM receives input requesting the parking lamps on, it energizes an internal relay to provide voltage to the parking lamps. One circuit provides voltage to all of the front parking lamps and a second circuit provides voltage to all of the rear parking lamps.