AIR SUSPENSION SYSTEM, Diagnostic DTC:C1762

DTC Code DTC Name
C1762 Continuous Current to Exhaust Solenoid

DESCRIPTION

The exhaust valve built into the height control compressor assembly opens to discharge compressed air from the pneumatic cylinders into the atmosphere according to the signal from the suspension control ECU.

DTC Code DTC Detection Condition Trouble Area
C1762 With the exhaust solenoid valve activated, the vehicle height is not lowered to the standard vehicle height after 100 seconds have elapsed.

  • Clogging in air tube or each valve

  • Leveling solenoid valve (No. 2 height control valve)

  • Gate solenoid valve (No. 2 height control valve)

  • Exhaust valve (Height control compressor)

  • Suspension control ECU

CAUTION / NOTICE / HINT

Note

When replacing the suspension control ECU, perform registration Click here.

Tech Tips

If DTC C1782 is output at the same time, perform troubleshooting for C1782 first Click here.

PROCEDURE


  1. CUSTOMER PROBLEM ANALYSIS


    1. Ask the customer about the vehicle and usage conditions when the DTC was stored.

      Tech Tips

      DTC C1762 can be stored under unusual vehicle or usage conditions.

      Points to confirm

      • Confirm if there were any foreign objects caught between the body and tires.

      • Confirm if the vehicle has been driven on an unpaved surface or with a wheel not contacting the ground.

      • Confirm if the vehicle height mode has been continuously changed using the height control switch, causing the vehicle to raise and lower repeatedly.

    NEXT

  2. CHECK DTC


    1. Clear the DTC Click here.

    2. Start the engine and wait for 100 seconds or more.

    3. Set the vehicle height to HI, wait until the vehicle height change is complete, and then return the vehicle height to normal.

    4. Check for DTC Click here.

      Result
      Result Proceed to
      DTC C1762 is output A
      DTC C1762 is not output B
      DTC C1762 and other DTCs are output C

    B

    END (C1762 WAS OUTPUT DUE TO UNUSUAL VEHICLE OR USAGE CONDITION)

    C

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  3. INSPECT AIR TUBE (AIR TUBE FOR CLOG)


    1. Inspect the air tubes for clogs Click here.

      OK
      No clogs are found in the air tubes.

    NG

    REPAIR OR REPLACE AIR TUBE

    OK

  4. INSPECT NO. 2 HEIGHT CONTROL VALVE

    Click here


    NG

    REPLACE NO. 2 HEIGHT CONTROL VALVE Click here

    OK

  5. INSPECT HEIGHT CONTROL COMPRESSOR (EXHAUST SOLENOID VALVE)

    Click here


    OK

    REPLACE SUSPENSION CONTROL ECU Click here

    NG

    REPLACE HEIGHT CONTROL COMPRESSOR ASSEMBLY Click here