Hyundai Ioniq (AE): Inhibitor Switch / Troubleshooting

Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual / DCT(Dual Clutch Transmission) System / Dual Clutch Transmission Control System / Inhibitor Switch / Troubleshooting

Fault Diagnosis
Fault Diagnosis for Symptom
Major Symptom
Expected Cause
Items to Check and Measures
Shift lever not operating
Gear not marked on cluster
Shock occurs while shifting lever Warning lamp ON
Engine OFF while vehicle is parked
Inhibitor switch circuit abnormal
Inhibitor switch function abnormal
Check the inspection FLOW and replace the inhibitor switch
Inhibitor switch "N" setting faulty
Adjust "N" setting using "N" setting jig (Refer to Dual Clutch Transmission Control System - "Inhibitor Switch")
Shift cable separation faulty
Adjust shift cable separation (Refer to Dual Clutch Transmission Control System - "Inhibitor Switch")
Poor ground condition on reversing light circuit
Check the ground condition on reversing light and retighten it
Inhibitor switch vehicle side circuit abnormal
Check the connection of junction box power terminal, fuse (TCU) terminal and replace the junction box or adjust the gap
Check inside the inhibitor switch connector for foreign substance and whether terminal is bent
Poor ground condition on inhibitor switch wire
Check the ground condition of wire and retighten it
Poor inhibitor unit (disconnection/short-circuit)
Replace inhibitor switch (refer to inhibitor switch inspection)

    Circuit Diagram

    Inspection    â€¢ Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

    Other information:

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Front Radar Unit. Description and operation

    DescriptionThe smart cruise control unit is installed on the front right side of the chassis. A radar sensor is embedded in the front section of the unit. This sensor detects vehicles and objects in front of the vehicle. The radar sensor can detect up to 64 objects ahead of a vehicle.

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Description and operation

    DescriptionRear corner radar is a system that uses two magnetic wave radar sensors attached on the rear panel to measure the distance from the following vehicles and provides the sensing and (visual and auditory) alarm of any vehicle coming into the blind spot.

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