Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Component Inspection
2011 Hyundai Equus SignatureSECTION Component Inspection
- IG "OFF"
- IG "ON"
- After connecting GDS, check DTC on the GDS.
- Using GDS, Erase the DTCs.
- Operate each sensor's calibration again.
- IG "OFF" and then after about 10 seconds, IG "ON"
- Using a GDS, Check DTC present.
- Is the same DTC shown?
YES
- Substitute with a known-good HECU/each sensor and check for proper operation. If problem is corrected, replace HECU/each sensor and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
In a case of replacing HECU, operate each sensor's calibration by scantool, including the steering angle sensor's calibration.
In a case of replacing the sensor, operate the sensor's calibration by scantool.
NO
- This fault may be intermittently caused by poor connection in the HEC connector or was repaired and HECU memory was not cleared. Go to "VERIFICATION OF VEHICLE REPAIR " procedure.
- Substitute with a known-good HECU/each sensor and check for proper operation. If problem is corrected, replace HECU/each sensor and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.