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Network Message Chart

Broadcast Message Originating Module Message Purpose
Brake switch position BCM Input from brake switch necessary to change gears.
Gear data GSM Message sent to TCM which gear is commanded.
Gear confirmation TCM Input to GSM confirming gear selection.
PRNDM mode IPC Used for PRNDM display.
Gear command TCM Input to change gears.
Key in ignition status BCM Input used to change gears.
Vehicle lock status BCM Input used to move transmission out of P.
Seat belt buckle data RCM Input from seat belt buckle to determine driver presence.
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