DTC C1761: Continuous Electric Current to Height Control Compressor Motor [08/2019 - ]: Description

DTC Code	Detection Condition	Trouble Area
C1761*1	Either condition is met: With the AIR SUS relay activated, the vehicle does not return to the standard vehicle height after 90 seconds have elapsed. Power is supplied to the height control compressor motor for 100 seconds or more within a 280 second period.	Air leakage from the air tube or each valve Clogging in the air tube or each valve AIR SUS relay Leveling solenoid valve (No. 2 height control valve) Gate solenoid valve (No. 2 height control valve) Exhaust solenoid valve (No. 1 height control compressor) Height control sensors Wire harness or connector Height control compressor Suspension control ECU

HINT:

*1: The compressor motor operates continuously to raise vehicle height and allows electric current flow to the AIR SUS relay for 90 seconds or more under the following conditions:

Vehicle height control is attempted on a steep slope when the vehicle is overloaded.
The compressor remains on for an excessive period of time or repeatedly turns on and off because of continuous height control switch operation.
If the compressor remains on because the vehicle is jacked up, the vehicle height is set at a position lower than normal while the engine is running and then the vehicle height control function raises the vehicle.
Thus DTC C1761 may be output and vehicle height control may be suspended. (This is not electrically abnormal.) In this case, however, the vehicle height operation is resumed approximately 10 minutes after the engine switch is turned on (IG) after the ECU detects the first error. If the ECU detects another error, it takes 70 minutes until control is resumed.