How To Proceed With Troubleshooting [12/2019 - 11/2023]: Procedure

VEHICLE BROUGHT TO WORKSHOP
Result

Proceed to

NEXT

Result:

NEXT

See step 2

CUSTOMER PROBLEM ANALYSIS CHECK

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 hybrid control system has started.
How did it happen?	Problem symptoms

Result

Proceed to
NEXT

Result:

See step 3

READ AND SAVE OPERATION HISTORY

NOTE:

If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read and saved, the operation history information could be lost.
The operation history function uses the current system time of the GTS and the time counter inside the controlling ECU to calculate the times shown in the operation history. For this reason, before reading the operation history, first make sure that the GTS system clock is accurately set to the current time.

Read and save operation history using the GTS.

Refer to CHECK FOR INTERMITTENT PROBLEMS [12/2019 - 11/2023]

Body Electrical > Main Body > Utility

Tester Display
Operation History

Result

Proceed to
NEXT

Result:

See step 4

PRE-CHECK

Measure the auxiliary battery voltage with the ignition switch off.*1
Measure the auxiliary battery voltage.*2
1. *1: for HV Model
2. *2: for Gasoline Model
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.
Check the fuses and relays.

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:

See step 5

SYMPTOM SIMULATION
Result

Proceed to

NEXT

Result:

NEXT

See step 6

INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

Using the GTS, check for CAN communication system DTCs.

for HV Model: Refer to DIAGNOSIS SYSTEM [12/2019 - 09/2020] , or refer to DIAGNOSIS SYSTEM [09/2020 - 10/2021] , or refer to DIAGNOSIS SYSTEM [10/2021 - 10/2022] , or refer to DIAGNOSIS SYSTEM [10/2022 - 11/2023]

for Gasoline Model: Refer to DIAGNOSIS SYSTEM [12/2019 - 09/2020] , or refer to DIAGNOSIS SYSTEM [09/2020 - 10/2022] , or refer to DIAGNOSIS SYSTEM [10/2022 - 11/2023]

Result

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

Result:

GO TO CAN COMMUNICATION SYSTEM

for HV Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2021] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2021 - 10/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 11/2023]

for Gasoline Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 11/2023]

Result:

See step 7

CHECK POWER DOOR LOCK CONTROL SYSTEM

Check the power door lock control system.

Refer to OPERATION CHECK [12/2019 - 11/2023]

Power door lock control system is normal

Result

Proceed to
OK
NG

Result:

GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 11/2023]

Result:

See step 8

CHECK WIRELESS DOOR LOCK CONTROL SYSTEM

Check the wireless door lock control system.

Refer to OPERATION CHECK [12/2019 - 11/2023]

Wireless door lock control system is normal

Result

Proceed to
OK
NG

Result:

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 11/2023]

Result:

See step 9

CHECK SMART KEY SYSTEM (for Entry Function)

Check the smart key system (for Entry Function).

Refer to OPERATION CHECK [12/2019 - 11/2023]

Smart key system (for Entry Function) is normal

Result

Proceed to
OK
NG

Result:

GO TO SMART KEY SYSTEM (for Smart Entry Function). Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 11/2023]

Result:

See step 10

CHECK SMART KEY SYSTEM (for Start Function)

Check the smart key system (for Start Function).

for HV Model: Refer to OPERATION CHECK [12/2019 - 10/2021] , or refer to OPERATION CHECK [10/2021 - 11/2023]

for Gasoline Model: Refer to OPERATION CHECK [12/2019 - 10/2021] , or refer to OPERATION CHECK [10/2021 - 11/2023]

Smart key system (for Start Function) is normal

Result

Proceed to
OK
NG

Result:

GO TO SMART KEY SYSTEM (for Start Function)

for HV Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2021] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2021 - 11/2023]

for Gasoline Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2021] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2021 - 11/2023]

Result:

See step 11

CHECK LIGHTING SYSTEM (EXT)

Check the lighting system (EXT).

w/ AFS: Refer to OPERATION CHECK [12/2019 - 11/2023]

w/o AFS: Refer to OPERATION CHECK [12/2019 - 11/2023]

Lighting system (EXT) is normal

Result

Proceed to
OK
NG

Result:

GO TO LIGHTING SYSTEM (EXT)

w/ AFS: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 11/2023]

w/o AFS: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 11/2023]

Result:

See step 12

CHECK LIGHTING SYSTEM (INT)

Check the lighting system (INT).

Refer to OPERATION CHECK [12/2019 - 11/2023]

Lighting system (INT) is normal

Result

Proceed to
OK
NG

Result:

GO TO LIGHTING SYSTEM (INT). Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 11/2023]

Result:

See step 13

CHECK HORN SYSTEM

Check the horn system.

Horn system is normal

Result

Proceed to
OK
NG

Result:

GO TO HORN SYSTEM. Refer to PROBLEM SYMPTOMS TABLE [12/2019 - 11/2023]

Result:

See step 14

PROBLEM SYMPTOMS TABLE

Refer to Problem Symptoms Table.

Refer to PROBLEM SYMPTOMS TABLE [12/2019 - 10/2022] , or refer to PROBLEM SYMPTOMS TABLE [10/2022 - 11/2023]

Result

Result	Proceed to
Fault is not listed in Problem Symptoms Table (Fault can be simulated)	A
Fault is not listed in Problem Symptoms Table (Fault cannot be simulated)	B
Fault is listed in Problem Symptoms Table	C

Result:

CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS [12/2019 - 11/2023]

Result:

See step 16

Result:

See step 15

PERFORM OVERALL ANALYSIS AND TROUBLESHOOTING*

System Description
Refer to SYSTEM DESCRIPTION [12/2019 - 11/2023]
Terminals of ECU
Refer to TERMINALS OF ECU [12/2019 - 11/2023]
Data List / Active Test
Refer to DATA LIST / ACTIVE TEST [12/2019 - 11/2023]

Inspection

Result

Proceed to
NEXT

Result:

See step 16

REPAIR OR REPLACE
Result

Proceed to

NEXT

Result:

NEXT

See step 17
CONFIRMATION TEST
Result

Proceed to

NEXT

Result:

NEXT

END