How To Proceed With Troubleshooting [12/2021 - ]: 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
  Where	Road conditions
  Under what conditions?	Driving conditions, weather conditions
  How did it happen?	Problem symptoms

Result

Result: 

NEXT 

See step  3

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

   Standard Voltage

   11 to 14 V (Ignition switch off)

   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  4

1. Using the Techstream, check that the CAN communication system is functioning normally.

   for HV Model:

   Refer to DIAGNOSIS SYSTEM [12/2021 - 10/2022] , or refer to DIAGNOSIS SYSTEM [10/2022 - 10/2023] , or refer to DIAGNOSIS SYSTEM [10/2023 - 11/2024] , or refer to DIAGNOSIS SYSTEM [11/2024 - ]

   for Gasoline Model:

   Refer to DIAGNOSIS SYSTEM [12/2021 - 10/2022] , or refer to DIAGNOSIS SYSTEM [10/2022 - 10/2023] , or refer to DIAGNOSIS SYSTEM [10/2023 - 11/2024] , or refer to DIAGNOSIS SYSTEM [11/2024 - ]

   OK

   CAN communication system is functioning normally.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

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: 

OK 

See step  5

1. Check for DTCs.

   Body Electrical > Front Radar Sensor > Trouble Codes 

2. Make a note of any DTCs that are output.

   Result

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

Result: 

B 

GO TO  DIAGNOSTIC TROUBLE CODE CHART [11/2018 - 12/2021]  

Result: 

A 

See step  6

1. Using the Techstream, check for Vehicle Control History.

   Body Electrical > Front Radar Sensor > Utility 

   Tester Display
   Vehicle Control History (RoB)

2. Record any output Vehicle Control History.

   Result

   Result	Proceed to
   Vehicle Control History codes are not output	A
   Vehicle Control History code X2026 is output	B
   Vehicle Control History codes other than X2026 are output	C

Result: 

A 

GO TO SYMPTOM SIMULATION 

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

Result: 

B 

GO TO VEHICLE CONTROL HISTORY (X2026) 

Refer to VEHICLE CONTROL HISTORY [12/2021 - 10/2022] , or refer to VEHICLE CONTROL HISTORY [10/2022 - ]

Result: 

C 

See step  7

1. Using the Techstream, clear the Vehicle Control History.

   Body Electrical > Front Radar Sensor > Utility 

   Tester Display
   Vehicle Control History (RoB)

2. Using the Techstream, check for Vehicle Control History.

   Body Electrical > Front Radar Sensor > Utility 

   Tester Display
   Vehicle Control History (RoB)

   Result

   Result	Proceed to
   Vehicle Control History codes are not output	A
   Vehicle Control History codes are output	B

Result: 

A 

GO TO SYMPTOM SIMULATION 

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

Result: 

B 

GO TO VEHICLE CONTROL HISTORY 

Refer to VEHICLE CONTROL HISTORY [12/2021 - 10/2022] , or refer to VEHICLE CONTROL HISTORY [10/2022 - ]