have no lowering, unless engine revved or steering turned. This system needs pressure from a pilot hose into valve assembly to allow lower. THERE IS NO PRESSURE UNLESS YOU MOVE STEERING OR TILT..s/s. once PRESSURE IS THERE, it lowers normally.
There is a lower switch that goes to a small ckt board. This board has an output to the diverter valve solenoid on left frame rail. Without a schematic, I'm guessing this valve should get 12 volts when the lower switch is activated. It has nothing. Switch is good, gives signal to box, wires to sol are good,but there is no output to solenoid. This sol on the diverter valve measures 10 ohms. I'm guessing it's too low and drawing too much current, then took out the ckt board that controls it. Without any diagram or info, I/m just guessing on the sol. It might even be a sensor and my diag is wrong. Have a new Toyota manual but does not include the 35 series. that's another $800!
If someone has a rundown on what the sol does, or even it's purpose, that would help!
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Heck no, customer is driving this now, still not right. He can lower, but must steer slightly left or right for load to lower.
We have paid Toyota dealer huge amounts of money for several books on repair and diagrams. They are unable to supply the proper manual for this serial # and model. They have sold us 5 manuals so far, all wrong!!Not the first time that Toyota cannot supply a manual, no matter how much money we give them. Not impressed with Toyota at all.
Look at my profile and email me. I'm interested to see if you have the same model truck
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