How To Proceed With Troubleshooting [08/2022 - ]: 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?	Whether the engine switch was on (IG), whether the engine was started
  How did it happen?	Problem symptoms*

  • *: Be sure to ask the customer in detail about the following points concerning the vehicle operating conditions, environment and problem, and then check for DTCs.
    1. If the entry lock/unlock function does not operate for all doors.
    2. If the entry lock function does not operate.
    3. If the entry unlock function does not operate.
    4. If both the entry lock and unlock functions do not operate.
    5. If the wireless lock and unlock functions do not operate.
    6. If there is no power even when the engine switch is pressed (does not turn on (ACC)).
    7. If the engine does not start with the push-button start function.
    8. If the outside warning buzzers do not sound.
    9. If an engine start was attempted by holding the electrical key transmitter sub-assembly near the engine switch and then pressing the engine switch.
    10. If the interior warning buzzers do not sound.
    11. Any other details concerning the problem.
  • If it is suspected that wave interference is likely, be sure to ask the customer in detail about the following points concerning the vehicle operating conditions, environment and problem.
    1. Specific locations where the system does not operate (such as near TV towers, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc.).
    2. Specific times when the system does not operate. If the symptoms occurred immediately after purchase or only recently. If the symptoms occurred even when the electrical key transmitter sub-assembly was near the vehicle (electrical key antenna).
    3. If the system does not operate only when near specific vehicles (there may be wave interference from the wireless systems of other vehicles).
    4. If the system operates intermittently.
    5. If the electrical key transmitter sub-assembly is bundled together with other items.
    6. If the electrical key transmitter sub-assembly is carried together with other electronic devices, such as cell phones, personal computers, portable music players, other electrical keys, etc. (keep the electrical key transmitter sub-assembly at least 0.1 m (0.33 ft.) away from such items).
    7. Where the electrical key transmitter sub-assembly is being kept when not in use:

       If the electrical key transmitter sub-assembly is being placed within 1 m (3.28 ft.) of items such as TVs, DVD recorders, induction cookers, rice cookers, dishwashers, modems, cell phones, personal computers, microwave ovens, desk or floor lamps, cordless telephones, etc.

    8. If there are electronic devices that transmit radio waves placed in the vehicle.
    9. When the transmitter battery was last replaced.

       The transmitter battery can be checked using the "Key Low Battery" item in the Data List.

       Refer to DATA LIST / ACTIVE TEST [08/2022 - ] 

    10. If the customer installed any optional components (theft deterrent devices, wireless fog lights, etc.) to the vehicle.

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 [08/2021 - ]

   Result

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

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] 

Result: 

A 

See step  5

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

   Refer to DTC CHECK / CLEAR [08/2019 - ]

   Result

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

Result: 

B 

GO TO LIN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] 

Result: 

A 

See step  6

1. Check for DTCs and make a note of any codes that are output.

   Refer to DTC CHECK / CLEAR [08/2019 - ] 

   Result

   Result	Proceed to
   DTCs are not output	A
   Engine immobiliser system DTCs are output	B
   Smart access system with push-button start (for Entry Function) DTCs are output	C
   Smart access system with push-button start (for Start Function) DTCs are output	D

Result: 

B 

GO TO ENGINE IMMOBILISER SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2019 - ] 

Result: 

C 

GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function). Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2019 - ] 

Result: 

D 

GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function). Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2022 - ]  

Result: 

A 

See step  7

1. Refer to Problem Symptoms Table.

   Refer to PROBLEM SYMPTOMS TABLE [08/2019 - ] 

   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  9

Result: 

A 

See step  8

1. Operation Check

   Refer to OPERATION CHECK [08/2022 - ] 

2. Terminals of ECU

   Refer to TERMINALS OF ECU [08/2022 - ] 

3. Data List / Active Test

   Refer to DATA LIST / ACTIVE TEST [08/2022 - ] 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  9

Result

Result: 

NEXT 

See step  10

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [08/2019 - ] 

2. Check for DTCs.

   Refer to DTC CHECK / CLEAR [08/2019 - ] 

   Result

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

Result: 

A 

END 

Result: 

B 

GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2022 - ]