Hyundai Sonata LF: Advanced Smart Cruise Control System / Advanced Smart Cruise Control (ASCC) Unit-Radar Repair procedures
| 1. |
Remove the bumper.
(Refer to Body - "Front Bumper") |
| 2. |
Disconnect the smart cruise control unit connector. |
| 3. |
Remove the smart cruise control unit assembly (A) from vehicle after loosening mounting bolts. 
|
| 1. |
Install in the reverse order of removal. |
| 2. |
Align the smart cruise control sensor.
("Advanced Smart Cruise Control (ASCC) Alinment" ) |
| 3. |
Install the bumper cover.
(Refer to Body - "Front Bumper Cover") |
| Advanced Smart Cruise Control (ASCC) Rader Sensor Alignment |
The objective of the alignment is to ensure correct SCC
performance. In order for the sensor to perform correctly, the sensor
must be aligned correctly. The sensor alignment has major impact on road
estimation, lane prediction, and target processing. When the sensor is
misaligned, the performance of SCC cannot be guaranteed. Therefore, when
the sensor is reinstalled or a new sensor is installed on a vehicle,
the sensor shall be aligned by service personnel.
|
The sensor must be aligned when;
| • |
The sensor is reinstalled after removing. |
| • |
A new sensor is installed on a vehicle. |
| • |
The sensor or nearby parts are impacted in a collision. |
| • |
The sensor can not recognize a vehicle ahead. |
|
|
The sensor can not recognize a vehicle ahead.
| • |
Remove heavy objects, such as luggage in the trunk, from the vehicle. |
| • |
Remove heavy objects, such as luggage in the trunk, from the vehicle. |
| • |
Check wheel alignment. |
| • |
Check the pollution condition of sensor cover |
|
Advanced Smart Cruise Control (SCC) Radar Sensor Alignment
| 1. |
Stop the vehicle horizontally at a flat place.
| • |
Adjustment may not be accurate if the installation surface height and angle of the vehicle and reflector are different. |
| • |
Perform in an area with minimum clearance of 8m front, 4m sides, and 1.2m above the vehicle. |
| • |
Remove heavy objects from inside of the vehicle (seating area and trunk). |
| • |
Ensure that all tires are filled with spec air pressure. |
| • |
Remove objects (metal plates, resins, etc.) that may cause
electric signal interference from the area where sensor alignment is
performed. |
| • |
Be sure that the vehicle is not moved and free from vibration
when performing sensor alignment (getting in/out or opening/closing
doors). |
| • |
Check that radiator grill and sensor cover is not dirty. |
| • |
Check that the wheel alignment is normal. |
| • |
Do not turn OFF the power when performing sensor alignment. |
| • |
Power supplied to the radar sensor must be between 9V~16V. |
| • |
Temperature in the area where sensor alignment is performed must be between -30~60°C. |
|
|
| 2. |
Mark the center point of emblem (A) and the center point on top of wind glass (B). 
|
| 3. |
Connect the ASCC Calibration beam (SST No. : 09964-C1200) to the Tri-Pod (SST No. : 09964-C1300). 
|
| 4. |
Match the vertical line of laser to (A) and (B) using the ASCC calibration beam pointer. 
|
| 5. |
Mark (C) located in 2.5~4.2 m from (A) in front of the vehicle. |
| 6. |
Mark (D) at the place which is 11 mm away from (C) to the left in vertical direction. 
|
| 7. |
Disconnect the ASCC Calibration beam (SST No. : 09964-C1200) from the Tri-Pod (SST No. : 09964-C1300). |
| 8. |
Connect the reflector(SST No. : 09964-C1100) to the tripod(SST No. : 09964-C1300) and set the reflector center height to 577 mm. 
|
| 9. |
Set the reflector horizontal using the leveler which is built in the tripod(SST No. : 09964-C1300). 
|
Balance the level so that the bubble in the level is set between the spec lines. |
|
| 10. |
Set SST (reflector or tripod) to match the position of SST (reflector) to the position of (D). 
|
Visually check that the reflecting side of the reflector is levelled with the front of the vehicle. |
|
| 11. |
Check again the radar sensor and the surface of front bumper for the following items with the eyes.
| • |
Make sure that there is no debris, or reflecting object on the surface of the radar. |
| • |
Make sure that there is no debris, or reflecting object on the radiator grill. |
|
|
| 12. |
Connect the GDS to the DLC of the vehicle and start sensor alignment.
|
If the engine is running, the vibration may cause inaccurate sensor alignment, so perform sensor alignment in IG ON mode. |
|
| 13. |
After correctly selecting the vehicle model, select "SCC Alignment" from the auxiliary functions in GDS Menu. 
|
| 14. |
Perform sensor alignment by following the directions shown in the GDS monitor. 
|
| 15. |
In case of sensor alignment failure, check the alignment
conditions. Turn the ignition key OFF, then reperform the sensor
alignment procedure. |
Other information:
Troubleshooting
SymptomPossible causeRemedyHard steeringImproper front wheel alignmentExcessive turning resistance of lower arm ball jointLow tire pressureNo power assistCorrectReplaceAdjustRepair or replacePoor return of steering wheel to centerImproper front wheel alignmentCorrectPoor or rough rideImproper front wheel alignmentMalfunctioning shock absorberBroken or worn stabilizerBroken or worn coil springWorn lower arm bushingCorrectRepair or replaceReplaceReplaceReplace the lower arm assemblyAbnormal tire wearImproper front wheel alignmentImproper tire pressureMalfunctioning shock absorberCorrectAdjustRepair or replaceWanderingImproper front wheel alignmentPoor turning resistance of lower arm ball jointLoose or worn lower arm bushingCorrectReplaceRetighten or replaceVehicle pulls to one sideImproper front wheel alignmentExcessive turning resistance of lower arm ball jointBroken or worn coil springBent lower armCorrectReplaceReplaceRepair or replaceSteering wheel shimmyImproper front wheel alignmentPoor turning resistance of lower arm ball jointBroken or worn stabilizerWorn lower arm bushingMalfunctioning shock absorberBroken or worn coil springCorrectReplaceReplaceReplaceRepair or replaceReplaceBottomingBroken or worn coil springMalfunctioning shock absorberReplaceRepair or replace
Wheel /tire noise, vibration and harshness concerns are
directly related to vehicle speed and are not generally affected by
acceleration, coasting or decelerating...
Description
The A/C Pressure Transducer (APT) converts the pressure value
of high pressure line into voltage value after measuring it. By
converted voltage value, engine ECU controls the cooling fan by
operating it high speed or low speed. Engine ECU stops the operation of
the compressor when the temperature of refrigerant line is very high or
very low irregularly to optimize air conditioning system...
