C1762

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

DESCRIPTION





WIRING DIAGRAM





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) 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.

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 RH valve.





(1) Connect terminal 1 (RH+) to the battery positive (+) terminal, and terminal 2 (E) to the battery negative (-) terminal.

(2) Check the operating sound of the height control valve.

OK:

It makes an operating sound (click).

(c) Check the front height control valve LH valve.





(1) Connect terminal 3 (LH+) to the battery positive (+) terminal, and terminal 2 (E) to the battery negative (-) terminal.

(2) Check the operating sound of the height control valve.

OK:

It makes an operating sound (click).

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 RH valve.





(1) Connect terminal 1 (+RH) to the battery positive (+) terminal, and terminal 2 (E) to the battery negative (-) terminal.

(2) Check the operating sound of the height control valve.

OK:

It makes an operating sound (click).

(c) Check the rear height control valve LH valve.





(1) Connect terminal 3 (+LH) to the battery positive (+) terminal, and terminal 2 (E) to the battery negative (-) terminal.

(2) Check the operating sound of the height control valve.

OK:

It makes an operating sound (click).

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 exhaust valve is stuck:





(1) Connect terminal 1 to the battery positive (+) terminal, and terminal 2 to the battery negative (-) terminal.

(2) Check the operating sound of the height control valve.

OK:

It makes an operating sound (click).

NG -- REPLACE HEIGHT CONTROL COMPRESSOR Removal

OK -- REPLACE SUSPENSION CONTROL ECU Removal