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:
Adaptive Front Lighting System Repair procedures
Removal
AFLS Unit
1.
Disconnect the negative (-) battery terminal.
2.
Remove the glove box housing (A). (Refer to the Body group - "Crash pad")
3.
Disconnect the glove box housing connect ...
Lane departure warning system (LDWS) (If equipped)
This system detects the lane with the sensor at the front windshield and warns
you when your vehicle leaves the lane.
WARNING
The LDWS does not make the vehicle change lanes. It is the driver ...
Console Armrest Components and Components Location
Component Location
[Front Console Armrest]
1. Front console armrest
[Rear Console Armrest]
1. Rear console armrest
...
Categories
Hyundai Equus Manuals
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