Medium and Heavy Trucks
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Exterior Lighting Circuit Limits
The multifunction turn signal stalk communicates to the CECU inside the cab which sends information to the Chassis
Node over the F-CAN bus. The Chassis Node then activates the load requested, drawing power from the chassis PDC.
Vehicle stop/turn signal lamps
Trailer turn/vehicle forward side facing turn signal lamps
Back Up Alarm
Windshield Washer Pump
If the current limits for any of these circuits are exceeded, the Chassis Node will default to a protection mode, causing the
I cant post the charts. Click this link and see PDF 253