How To Proceed With Troubleshooting [10/2023 - ]: 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, whether the problem occurred recently or has been occurring for a long time
  Where	Whether the problem occurs at a specific location
  Under what conditions?	Driving conditions, weather conditions
  How did it happen?	Problem symptoms*

  *: Interview the customer about the details of the driving conditions, environment and the malfunction, then check the DTCs after reading and storing the record of behavior.

Result

Result: 

NEXT 

See step  3

1. Read and save vehicle control history (RoB) using the GTS.

   Refer to VEHICLE CONTROL HISTORY (RoB) [10/2023 - ]

   Body Electrical > Back Door > Utility 

   Tester Display
   Vehicle Control History (RoB)

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Check the problem symptom.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Measure the auxiliary battery voltage with the ignition switch off.

   Standard voltage

   11 to 14 V

   If the voltage is below 11 V, recharge or replace the auxiliary 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  6

1. Use the GTS to check if the CAN communication system is functioning normally.

   for HV Model:

   Refer to DIAGNOSIS SYSTEM [10/2023 - 11/2024] , or refer to DIAGNOSIS SYSTEM [11/2024 - ]

   for Gasoline Model:

   Refer to DIAGNOSIS SYSTEM [10/2023 - 11/2024] , or refer to DIAGNOSIS SYSTEM [11/2024 - ]

   Result

   Result	Proceed to
   DTC is not output	A
   DTC is output	B

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM 

for HV Model:

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [02/2019 - ]

for Gasoline Model:

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]

Result: 

A 

See step  7

1. Check for DTCs.

   Body Electrical > Back Door > Trouble Codes 

   Result

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

Result: 

B 

GO TO  DIAGNOSTIC TROUBLE CODE CHART [10/2023 - 11/2024]  

Result: 

A 

See step  8

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

   Body Electrical > Back Door > Utility 

   Tester Display
   Vehicle Control History (RoB)

2. Make a note of the Vehicle Control History (RoB) output.

   Result

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

Result: 

B 

GO TO VEHICLE CONTROL HISTORY (RoB) 

Refer to VEHICLE CONTROL HISTORY (RoB) [10/2023 - ]

Result: 

A 

See step  9

1. Refer to Problem Symptoms Table.

   Refer to PROBLEM SYMPTOMS TABLE [10/2023 - 11/2024] , or refer to PROBLEM SYMPTOMS TABLE [11/2024 - ] 

   Result

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

Result: 

B 

ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE 

Result: 

A 

See step  10

1. Operation Check

   Refer to OPERATION CHECK [10/2023 - 11/2024] , or refer to OPERATION CHECK [11/2024 - ] 

2. Terminals of ECU

   Refer to TERMINALS OF ECU [10/2023 - ] 

3. Data List / Active Test

   Refer to DATA LIST / ACTIVE TEST [10/2023 - 11/2024] , or refer to DATA LIST / ACTIVE TEST [11/2024 - ] 

4. Inspection

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  11

1. Check whether the replacement, removal and installation of the multiplex network door ECU or disconnection of the connectors of the multiplex network door ECU, the disconnection of the cable of the negative (-) auxiliary battery terminal with the back door open, or the removal and installation or replacement of the power source system fuses has been performed.

   Result

   Result	Proceed to
   The negative (-) auxiliary battery terminal has disconnected with the back door open. A power source system fuse has removed and installed or replaced. The multiplex network door ECU has removed and installed or replaced, or the multiplex network door ECU connector has disconnected.	A
   The negative (-) auxiliary battery terminal has not disconnected with the back door open. A power source system fuse has not removed and installed or replaced. The multiplex network door ECU has not removed and installed or replaced, or the multiplex network door ECU connector has not disconnected.	B

Result: 

B 

See step  13

Result: 

A 

See step  12

1. Initialize the power back door system.

   Refer to INITIALIZATION [10/2023 - ] 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  13

Result

Result: 

NEXT 

END