Reduce speed and shift to a lower gear before you start down a long or steep downgrade. If you don’t shift down, you might have to use your brakes so much that they would get hot and no longer operate efficiently.
On a long uphill grade, shift down and reduce your speed to around 70 km/h (45 mph) to reduce the possibility of engine and transaxle overheating.
If your trailer weighs more than the maximum trailer weight without trailer brakes and you have an automatic transaxle, you should drive in D (Drive) when towing a trailer.
Operating your vehicle in D (Drive) when towing a trailer will minimize heat build up and extend the life of your transaxle.
26 Brake Control Solenoid Valve(26/B_VFS): Repair procedures
Inspection
1.
Turn ignition switch OFF.
2.
Remove the air duct (A).
3.
Remove the air cleaner assembly.
(1)
Disconnect the breather hose (A) and brake booster intensifier hose.
(2)
...
Compression Test
Compression Pressure Inspection
If the there is lack of power, excessive oil consumption or poor fuel economy, measure the compression pressure.
1.
Warm up and stop ...