How To Proceed With Troubleshooting [12/2017 - ]: 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 [12/2017 - 09/2018] , or refer to DIAGNOSIS SYSTEM [09/2018 - 09/2019] , or refer to DIAGNOSIS SYSTEM [09/2019 - 10/2020] , or refer to DIAGNOSIS SYSTEM [10/2020 - 10/2022] , or refer to DIAGNOSIS SYSTEM [10/2022 - 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 [12/2017 - 09/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 10/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - 10/2023]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ] 

Result: 

A 

See step  5

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

   Refer to DTC CHECK / CLEAR [12/2017 - 10/2023] , or refer to DTC CHECK / CLEAR [10/2023 - ]

   Result

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

Result: 

B 

GO TO LIN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 10/2023]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ] 

Result: 

A 

See step  6

1. Refer to Problem Symptoms Table.

   Refer to PROBLEM SYMPTOMS TABLE [12/2017 - ] 

   Result

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

Result: 

B 

See step  8

Result: 

A 

See step  7

1. Operation Check

   Refer to OPERATION CHECK [12/2017 - ] 

2. Terminals of ECU

   Refer to TERMINALS OF ECU [12/2017 - ] 

3. Data List / Active Test

   Refer to DATA LIST / ACTIVE TEST [12/2017 - 10/2023] , or refer to DATA LIST / ACTIVE TEST [10/2023 - ] 

4. Inspection

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  8

Result

Result: 

NEXT 

See step  9

Result

Result: 

NEXT 

END