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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 1109 (Exterior Lighting (1 Of 2)) >> Description And Operation >> Exterior Lighting - System Operation and Component Description >> System Operation - Trailer Lamps >> Network Message Chart

Network Message Chart

WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.

BCM Network Input Messages 

Broadcast Message Originating Module Message Purpose
Gear position PCM Indicates the transmission is in reverse gear to the BCM. When the transmission is in REVERSE and the ignition in RUN, the BCM provides voltage to the reversing lamps.
Turn signal switch status SCCM Indicates the turn signal stalk position on the LH steering column multifunction switch (left/right lane change or turn signal on or off).

TRM Network Input Messages 

Broadcast Message Originating Module Message Purpose
Turn indication request BCM A command to the TRM to activate/deactivate the turn indicator output to the trailer tow connector.
Stoplamp request BCM A command to the TRM to activate/deactivate the stop lamps output to the trailer tow connector.
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