• The gross trailer weight must never exceed TWR described in the table. • The gross combination weight must never exceed the GCWR described in the table.

• The gross vehicle weight must never exceed the GVWR indicated on the Certification Label.
• The gross axle weight on each axle must never exceed the GAWR indicated on the Certification Label.
• If the gross trailer weight is over the unbraked TWR, trailer service brakes are required.
• Vehicles with a towing package: If the gross trailer weight is over 2000 lbs. (907 kg), a sway control device with sufficient capacity is required.
Towing related terms
GCWR, TWR and Unbraked TWRHydraulic Test
HYDRAULIC TEST
1. PERFORM HYDRAULIC TEST
(a) Measure the line pressure.
CAUTION:
The line pressure test should always be carried out with at least 2 people. One
person should observe the condition of wheels and wheel chocks while the other is
perform ...
Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very useful bec ...
TS and CG Terminal Circuit
DESCRIPTION
In the Test Mode (signal check), a malfunction in the speed sensor that cannot
be detected when the vehicle is stopped can be detected while driving.
Transition to the sensor check mode can be performed by connecting terminals
TS and CG of th ...