Hyundai Equus: Troubleshooting
| Trouble Symptom Charts |
| Trouble Symptom 1 |
| Trouble Symptom 2 |
| Trouble symptom | Probable cause | Remedy |
| The set vehicle speed varies greatly upward or downward "Surging" (repeated alternating acceleration and deceleration) occurs after setting | Malfunction of the vehicle speed sensor circuit | Repair the vehicle speed sensor system, or replace the part |
| Malfunction of ECM | Check input and output signals at ECM |
| Trouble Symptom 3 |
| Trouble symptom | Probable cause | Remedy |
| The CC system is not canceled when the brake pedal is depressed | Damaged or disconnected wiring of the brake pedal switch | Repair the harness or replace the brake pedal switch |
| Malfunction of the ECM signals | Check input and output signals at ECM |
| Trouble Symptom 4 |
| Trouble symptom | Probable cause | Remedy |
| The CC system is not canceled when the shift lever is moved to
the "N" position (It is canceled, however, when the brake pedal is
depressed) | Damaged or disconnected wiring of inhibitor switch input circuit | Repair the harness or repair or replace the inhibitor switch |
| Improper adjustment of inhibitor switch |
| Malfunction of the ECM signals | Check input and output signals at ECM |
| Trouble Symptom 5 |
| Trouble symptom | Probable cause | Remedy |
| Cannot decelerate (coast) by using the "SET/–" switch | Temporary damaged or disconnected wiring of "SET/–" switch input circuit | Repair the harness or replace the "SET/–" switch |
| Malfunction of the ECM signals | Check input and output signals at ECM |
| Trouble Symptom 6 |
| Trouble symptom | Probable cause | Remedy |
| Cannot accelerate or resume speed by using the "RES/+" switch | Damaged or disconnected wiring, or short circuit, or "RES/+" switch input circuit | Repair the harness or replace the "RES/+" switch |
| Malfunction of the ECM signals | Check input and output signals at ECM |
| Trouble Symptom 7 |
| Trouble symptom | Probable cause | Remedy |
| CC system can be set while driving at a vehicle speed of less
than 40km/h (25mph), or there is no automatic cancellation at that speed | Malfunction of the vehicle-speed sensor circuit | Repair the vehicle speed sensor system, or replace the part |
| Malfunction of the ECM signals | Check input and output signals at ECM |
| Trouble Symptom 8 |
| Trouble symptom | Probable cause | Remedy |
| The cruise main switch indicator lamp does not illuminate (But CC system is normal) | Damaged or disconnected bulb of cruise main switch indicator lamp | Repair the harness or replace the part. |
| Harness damaged or disconnected |
Schematic Diagrams
System Block Diagram
Component Parts And Function Outline
Component partFunctionVehicle-speed sensor, ESP/ABS Control ModuleConverts vehicle speed to pulse.ECMReceives signals from sensor and cont ...
Cruise Control Switch Schematic Diagrams
Circuit Diagram
...
See also:
Sedan Front Body
Front body A
Roof panel front cornerFront pillar outer cornerHood hinge mounting hole (O13)Shockabsorber mounting hole (O24)Front end module mounting hole (O9)Cowl top cover mounting hole (O7)
F ...
Power brakes
Your vehicle has power-assisted brakes that adjust automatically through normal
usage.
In the event that the power-assisted brakes lose power because of a stalled engine
or some other reason, you ...
Head Up Display Switch Repair procedures
Removal
1.
Disconnect the negative (-) battery.
2.
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad Lower Panel")
3.
Remove the crash pad lower panel and then push the head u ...
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Hyundai Equus Manuals
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