P Unable To Detect Lowering of LR Corner

Unable to Detect Lowering of Left Rear Corner

PINPOINT TEST P: UNABLE TO DETECT LOWERING OF LEFT REAR CORNER:

PINPOINT TEST P: UNABLE TO DETECT LOWERING OF LEFT REAR CORNER (Continued):

The Control Module has not received the signal that the left rear corner of the vehicle vented during the Auto Test check. There are ten possible causes:
1. Air suspension height sensor linkage arm is not connected properly to vehicle and/or air suspension height sensor.
2. Air line for left rear air spring may be plugged.
3. Left rear solenoid valve may be inoperative.
4. Left rear air spring Battery Positive Voltage (B+) power supply circuit may have an open in it.
5. Left rear air spring ground return circuit may have an open in it.
6. Vent solenoid valve may be inoperative.
7. Vent solenoid B+ power supply circuit may have an open in it.
8. Vent solenoid ground return circuit may have an open in it.
9. Control Module may be inoperative.
10. Left rear air spring may be unable to vent.