How To Proceed With Troubleshooting [01/2023 - ]: Procedure

Result

Result: 

NEXT 

See step  2

HINT: 

• In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
• Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
• The following 5 items are important points for problem analysis:

  What	Vehicle model, system name
  When	Date, time, occurrence frequency
  Where	Road conditions
  Under what conditions?	Driving conditions, weather conditions
  How did it happen?	Problem symptoms

Result

Result: 

NEXT 

See step  3

1. Measure the battery voltage.

   Standard Voltage

   11 to 14 V

   If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

2. Check the fuses and relays.
3. Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Using the Techstream, check for CAN communication system DTCs.

   Refer to DIAGNOSIS SYSTEM [01/2023 - 10/2023] , or refer to DIAGNOSIS SYSTEM [10/2023 - ]

   Result

   Result	Proceed to
   CAN DTCs are not output	A
   CAN DTCs are output	B

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [01/2023 - ] 

Result: 

A 

See step  5

1. Check for DTCs.

   Body Electrical > Main Body > Trouble Codes 

   Body Electrical > HL AutoLeveling > Trouble Codes 

   Body Electrical > Front Recognition Camera (Front Lighting Control) > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   DTCs are output	B

Result: 

B 

GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [03/2019 - ]  

Result: 

A 

See step  6

1. Using the Techstream, check for Vehicle Control History (RoB).

   Body Electrical > Front Recognition Camera (Front Lighting Control) > Utility 

   Tester Display
   Vehicle Control History (RoB)

   NOTE:

   Make sure to record the output Vehicle Control History.

   Result

   Result	Proceed to
   Vehicle Control History codes are not output	A
   Vehicle Control History code X2020 and/or X204D is output	B
   Vehicle Control History codes other than X2020 and X204D are output	C

Result: 

B 

GO TO VEHICLE CONTROL HISTORY (Check Details of Code X2020 or X204D). Refer to  VEHICLE CONTROL HISTORY (RoB) [01/2023 - ] 

Result: 

C 

See step  11

Result: 

A 

See step  7

1. Refer to Problem Symptoms Table.

   Refer to PROBLEM SYMPTOMS TABLE [01/2023 - ] 

   Result

   Result	Proceed to
   Fault is not listed in Problem Symptoms Table	A
   Fault is listed in Problem Symptoms Table	B

Result: 

B 

GO TO PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [01/2023 - ]  

Result: 

A 

See step  8

1. Operation Check.

   Refer to OPERATION CHECK [11/2021 - ] 

2. Terminals of ECU.

   Refer to TERMINALS OF ECU [03/2019 - ] 

3. Data List / Active Test.

   Refer to DATA LIST / ACTIVE TEST [03/2019 - ] 

4. On-vehicle Inspection.
5. Inspection.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  9

Result

Result: 

NEXT 

See step  10

Result

Result: 

NEXT 

END 

1. Clear Vehicle Control History
   1. Clear the Vehicle Control History.

      Body Electrical > Front Recognition Camera (Front Lighting Control) > Utility 

      Tester Display
      Vehicle Control History (RoB)

2. Check Vehicle Control History
   1. Using the Techstream, check the Vehicle Control History (RoB).

      Body Electrical > Front Recognition Camera (Front Lighting Control) > Utility 

      Tester Display
      Vehicle Control History (RoB)

   Result

   Result	Proceed to
   Vehicle Control History (RoB) codes are not output	A
   Vehicle Control History (RoB) codes are output	B

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [01/2023 - ] 

Result: 

B 

GO TO VEHICLE CONTROL HISTORY. Refer to  VEHICLE CONTROL HISTORY (RoB) [01/2023 - ]