PIPE 6N3729 - Caterpillar

Backup Alarm Driver Output Function
The backup alarm is used in order to alert any personnel that is near the vehicle that the vehicle is in the Reverse range. When the operator selects REVERSE the ECU activates the relay for the backup alarm which causes the alarm to sound.The feature can be used in order to disable vehicle systems. Such as steerable lift axles when the transmission is in Reverse. Similarly, the feature can be used in order to enable backup alarms or lights. This feature is not standard but recommended.Note: The driver has the ability to drive up to 2 amps.Starter Interlock Driver Output Function
The starter interlock function is an output signal to ensure conditions are met for the engine starter to be engaged. The vehicle needs to ensure that the shift selector is in neutral before allowing the engine to start and that the engine rpm is 0.If the starter interlock output is currently disabled, then the output conditions for the function to be enabled are ON if the transmission shift selector is in Neutral, the transmission is actually in Neutral, and the engine speed signal is 0 RPM. If the starter interlock output is currently enabled, then the output conditions for the function to be disabled are if the shift selector is moved from neutral, the actual gear is not neutral, or the engine speed signal has gone above (low idle rpm – 100 rpm) for 0.5 seconds.Note: The driver has the ability to drive up to 2 amps.Service Brake Operation
The service brake operation is a function to read a switch input or brake switch over the data link. The engine control may already have a brake switch input for cruise control, so the transmission control can use the information that is broadcast over the data link. If the engine control does not have a brake switch attached, then attach a brake switch to the transmission control directly. The service brake information is used in order to enable certain functions and is needed by the transmission control.Parking Brake
The parking brake can be disabled or enabled using the ET service tool. The SWC input for the parking brake input shows the parking brake set when the input is a closed circuit. The parking brake is disengaged when the input has an open circuit. The programmable parameters for the park brake have the following selections:
Installed
Installed and Neutralizer Logic is Enabled
Not InstalledWhen the parking brake option "Installed and Neutralizer Logic is Enabled"is selected, the parking brake can be used to prevent the vehicle operator from shifting into a range from Neutral without additional operator interaction. Transitioning the Parking Brake control from OFF to ON after the vehicle has come to a complete stop (zero output shaft speed and zero vehicle speed broadcast over the J1939 Data Link), the transmission will shift into Neutral. Once in Neutral, the shift selector will indicate Neutral and the Desired Gear, Left "N" on the shift pad, will flash. This indicates to the operator