How To Proceed With Troubleshooting [11/2018 - 02/2019]: 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 doors were locked or unlocked, whether the ignition switch was on, whether the engine has started
  How did it happen?	Problem symptoms

Result

Result: 

NEXT 

See step  3

1. Measure the battery voltage.

   Standard voltage

   11 to 14 V

   HINT: 

   • A simple method to determine whether the battery is depleted is to operate the horn.
   • If the battery voltage is below 11 V, recharge or replace the battery.
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 [11/2018 - 02/2019]

   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 [11/2018 - ] 

Result: 

A 

See step  5

1. Refer to Problem Symptoms Table.

   Refer to PROBLEM SYMPTOMS TABLE [11/2018 - 02/2019] 

   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  7

Result: 

A 

See step  6

1. Terminals of ECU

   Refer to TERMINALS OF ECU [11/2018 - 02/2019] 

2. Data List / Active Test

   Refer to DATA LIST / ACTIVE TEST [11/2018 - 08/2020] 

3. Operation Check

   Refer to OPERATION CHECK [11/2018 - 08/2020] 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7

Result

Result: 

NEXT 

See step  8

Result

Result: 

NEXT 

END