C1762

SUSPENSION CONTROL: AIR SUSPENSION SYSTEM: C1762: Continuous Electric Current to Exhaust Solenoid
C1762 - Continuous Electric Current to Exhaust Solenoid

DESCRIPTION

INSPECTION PROCEDURE

NOTICE:
- Before performing troubleshooting, inspect the connectors of related circuits.
- Before replacing the suspension control ECU, perform all of the following again: 1) symptom simulation Electronic Circuit Inspection Procedure; 2) DTC inspection; and 3) the Techstream inspection (Data List or Active Test). If no malfunctions are found in other areas, replace the suspension control ECU.
- If the suspension control ECU or height control sensor is replaced, the vehicle height offset calibration must be performed Programming and Relearning.
- The system may output DTC C1762 even when the system is normal if one of the following occurs: 1) the vehicle is being driven or is stopped on an irregular surface; or 2) the air tubes are clogged with snow or are frozen. If DTC C1762 is output, vehicle height control will stop. However, if the power switch is turned OFF and then ON (IG), vehicle height control will start.

PROCEDURE

1. CHECK AIR TUBE

(a) Check if any of the air tubes are clogged.

OK:

No clogs.

NG -- REPAIR OR REPLACE AIR TUBE
OK -- Continue to next step.

2. INSPECT IF FRONT HEIGHT CONTROL VALVE IS STUCK

(a) Remove the front height control valve Removal.

(b) Check the front height control valve (valve RH).

(1) Apply 12 V battery voltage to the control valve and check the operation of the valve RH.

OK:

(1) Apply 12 V battery voltage to the control valve and check the operation of the valve LH.

OK:

NG -- REPLACE FRONT HEIGHT CONTROL VALVE Removal
OK -- Continue to next step.

3. INSPECT IF REAR HEIGHT CONTROL VALVE IS STUCK

(a) Remove the rear height control valve Removal.

(b) Check the rear height control valve (valve RH).

(1) Apply 12 V battery voltage to the control valve and check the operation of the valve RH.

OK:

(1) Apply 12 V battery voltage to the control valve and check the operation of the valve LH.

OK:

NG -- REPLACE REAR HEIGHT CONTROL VALVE Removal
OK -- Continue to next step.

4. INSPECT IF HEIGHT CONTROL COMPRESSOR EXHAUST VALVE IS STUCK

(a) Remove the height control compressor Removal.

(b) Inspect if the exhaust valve is stuck

(1) Apply 12 V battery voltage to the exhaust valve and check the operation of the valve.

OK:

NG -- REPLACE HEIGHT CONTROL COMPRESSOR Removal

OK -- REPLACE SUSPENSION CONTROL ECU Removal