DTC 51

CIRCUIT DESCRIPTION:
Since the relief pressure of the compressed air is 980 kPa (142 psi), if vehicle height control is attempted on a steeply sloping road, when the vehicle is overloaded, or when the vehicle jacked up with the engine is running, the compressor motor operated continuously to raise vehicle height, and causes electric current to flow to AIR SUS relay for approx. 7 minutes or longer. Thus, DTC 51 may be output and vehicle height control may be suspended. (This is not abnormal). However, in this case, approximately 70 minutes after the ignition switch is turned ON, vehicle height control resumed again.

NOTE:
^ If vehicle height control is operated while removing wheels or while jacking up the vehicle, DTC 52 maybe output, but this is not abnormal. When DTC 52 is output, vehicle height control is not carried out. However, control is resumed if the ignition switch is turned off, then on again, or the removing wheels or jacking up of the vehicle is canceled.