Re: Torsion Leveling

Posted by HH56 On 2013/9/29 19:30:53

The solenoids rely on a ground to operate. Both solenoid coils are fed internally from the main terminals where the buss bar and fuses are connected. Both should have voltage as measured to ground at the small terminal. That would be the first to check. Remove the wire on each small terminal to isolate the solenoid and verify you have 12v to ground with the solenoid just sitting. If not on both, the one missing is either the wrong type solenoid, has an open coil, or is mounted improperly so the wrong main terminal is connecting to the buss bar.

The under dash switch is fed from the brake light switch. As long as the 7 1/2 amp fuse in the purple or pink wire connected to the solenoid buss bar is good you should have voltage to the brake switch. Voltage out on the light green wire when the brakes are relaxed. When you apply the brakes, the contacts switch and voltage is on the dark green wire for the brake lights and nothing on the light green wire. If that isn't happening check the brake switch. They are known failure items.

Once that is all sorted, the control switch gets voltage on the center light green terminal. It operates a relay when the car needs to level. The relay connects to ground and goes thru a limit switch and then to the solenoid. The limit switches are known to fail or the wires break where they bend to enter the back of switch so check those.

If still no joy then time to look for mechanical issues. Assuming the car has been working properly, the linkage and bars should be as shown in figure 21 of the suspension section of service manual. In particular, the transverse bars should be as shown with the short drivers side bar in front of the compensator and long passenger side at the rear. If they are not in that position, something has caused the compensator to rotate past center and things are now confused. All will manually need to be returned to normal position for the electric part to work properly.