Hyundai Sonata: 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 automatic transmission system - "inhibitor switch") | |
| Shift cable separation faulty | Adjust shift cable separation (refer to automatic transmission 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 (TCU2) 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) |
Inhibitor Switch Schematic Diagrams
Circuit Diagram
...
Inhibitor Switch Repair procedures
Inspection
•
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Inspection flow
Items to ch ...
Other information:
Hyundai Sonata LF 2014-2019 Service Manual: CVVT (Continuously Variable Valve Timing) System Description and Operation
Description
Continuous Variable Valve Timing (CVVT) system advances or
retards the valve timing of the intake and exhaust valve in accordance
with the ECM control signal which is calculated by the engine speed and
load.
By controlling CVVT, the valve over-lap or under-lap occurs,
which m ...
Hyundai Sonata LF 2014-2019 Service Manual: Hazard Lamp Switch Repair procedures
Inspection
1.
Check for continuity between terminals. If the continuity is not as specified, replace the hazard lamp switch.
AVN typeAudio typeNoDescription NoDescription 1GND1GND 2CAN _ High 2-3CAN _ Low 3- 4- 4-5Detent 5Detent 6ACC6Acc 7Battery (+)7Battery (+)8PAB Off 8PAB Off 9 ...
