Tongue weight
The gross trailer weight should be distributed so that the tongue weight is 9% to 11%.
(Tongue weight /gross trailer weight x 100 = 9% to 11%)

The gross trailer weight, gross axle weight and tongue weight can be measured with platform scales found at a highway weighing station, building supply company, trucking company, junk yard, etc.
Gcwr, twr and unbraked twr
HitchPositioning a floor jack
When raising your vehicle with a floor jack, position the jack correctly.
Improper placement may damage your vehicle or cause
injury.
Front
Rear
Caution
When raising your vehicle
Make sure to observe the following precautions to reduce the possibility of
death or serious injury:
...
Combination meter ecu communication stop mode
Description
Wiring diagram
Inspection procedure
Notice:
Turn the ignition switch off before measuring the resistances of the
main wire and the branch
wire.
After the ignition switch is turned off, check that the key reminder
warning system and light
reminder warning system ...
Canister
Components
removal
Disconnect cable from negative battery
terminal
Caution:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent airbag and seat belt pretensioner activation.
Remove canister
Disconnect the 2 tubes, hose a ...