How To Proceed With Troubleshooting [08/2019 - ]: Procedure

Result

Result: 

NEXT 

See step  2

HINT: 

• In troubleshooting, in order to check the problem symptoms accurately and judge correctly, avoid having any preconceptions. 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 malfunctions 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 and time, frequency, whether the problem occurred recently or has been occurring for a long time
  Where	Whether the problem occurs at specified place
  Under what conditions?	Whether the doors were locked or unlocked, whether the engine switch was on (IG), whether the engine was running
  How did it happen?	Ask the customer for details about the vehicle operating conditions, environment and malfunction.

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.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Check if CAN communication DTCs are output.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ]

   Result

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

Result: 

B 

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

Result: 

A 

See step  5

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

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

2. Clear the DTCs.

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

3. Recheck for DTCs. Try to reproduce the DTCs by duplicating the conditions indicated by the DTCs.

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

   Result

   Result	Proceed to
   DTCs are not output (Fault can be simulated)	A
   DTCs are not output (Fault cannot be simulated)	B
   DTCs are output	C

Result: 

B 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - 08/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2020 - 08/2021]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2021 - 08/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2022 - ] 

Result: 

C 

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

Result: 

A 

See step  6

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 

ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE 

Result: 

A 

See step  7

1. Terminals of ECU

   Refer to TERMINALS OF ECU [08/2019 - ] 

2. Data List / Active Test

   Refer to DATA LIST / ACTIVE TEST [08/2019 - ] 

3. Operation Check

   Refer to OPERATION CHECK [08/2019 - ] 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  8

Result

Result: 

NEXT 

See step  9

Result

Result: 

NEXT 

END