Component inspection

Connect scantool to Data Link Connector (DLC).
Engine "ON" and Head lamp "ON"
Clear the DTC
Ignition "OFF"
Engine "ON" and Head lamp "ON"
Connect scantool and select "Diagnostic Trouble Codes (DTCs)" mode and Read "DTC Status" parameter.
Is the DTC B1621 present?
YES
- Substitute with a known - good ECU and check for proper operation. If the problem is corrected, replace ECU and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Fault is intermittent caused by poor contact in the sensor's and/or AFLS ECU's connector or was repaired and AFLS ECU memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
* REFERENCE*

Download correct parameter When ECU replace.

In case of not supplied to Air-suspension vehicle, perform the initialization after downloading correct parameter.

* Vehicle condition
1. Park at lever land
2. Vehicle speed ≤ 5km/h
3. Engine r.p.m > 500rpm
4. Connect GDS
5. CAN communication is normal status
6. Battery voltage > 10.5V
7. Headlamp S/W ON, AFLS ON
  (1) Parameter Download
  
  Fig 1: Display - Select Parameter Download Screen
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  Fig 2: Display - Parameter Download Screen
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  Fig 3: Display - Parameter Download - Non Air Suspension 1st Screen
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  Fig 4: Display - Parameter Download - Non Air Suspension 2nd Screen
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  Fig 5: Display - Parameter Download - Air Suspension 1st Screen
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  Fig 6: Display - Parameter Download - Air Suspension 2nd Screen
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  Fig 7: Display - Parameter Download - Delivery Screen
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  (2) Calibration
  
  Fig 8: Display - Select Calibration Screen
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  Fig 9: Display - Calibration Screen
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  (3) Clear "DTC"
  
  (4) Confirm the Headlamp movement through the Actuation Test
  
  Fig 10: Display - Actuation Test Screen
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  Select the Parameter Download, refer to Fig 1.
  
  Parameter Download, refer to Fig 2.
  
  Parameter Download - Non Air Suspension 1st, refer to Fig 3.
  
  Parameter Download - Non Air Suspension 2nd, refer to Fig 4.
  
  Parameter Download - Air Suspension 1st, refer to Fig 5.
  
  Parameter Download - Air Suspension 2nd, refer to Fig 6.
  
  Parameter Download - Delivery, refer to Fig 7.
  
  Select the Calibration, refer to Fig 8.
  
  Calibration, refer to Fig 9.
  
  Actuation Test, refer to Fig 10.
  
  (5) Confirm the "DTC" and "Service data"