Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
How To Proceed With Troubleshooting [11/2018 - 12/2021]: Procedure
- VEHICLE BROUGHT TO WORKSHOP
Result
Proceed to NEXT Result:
NEXT
See step 2
- INSPECT AUXILIARY BATTERY VOLTAGE
- Measure the auxiliary battery voltage with the ignition switch off.
Standard voltage
11 to 14 V
If the voltage is below 11 V, replace or recharge the auxiliary battery before proceeding to the next step.
Result
Proceed to NEXT
Result:
NEXT
See step 3
- Measure the auxiliary battery voltage with the ignition switch off.
- CHECK CAN COMMUNICATION SYSTEM*
- Using the Techstream, check if the CAN communication system is functioning normally.
for HV Model:
Refer to DIAGNOSIS SYSTEM [11/2018 - 02/2019] , or refer to DIAGNOSIS SYSTEM [02/2019 - 10/2019] , or refer to DIAGNOSIS SYSTEM [10/2019 - 06/2020] , or refer to DIAGNOSIS SYSTEM [06/2020 - 08/2020] , or refer to DIAGNOSIS SYSTEM [08/2020 - 12/2021]
for Gasoline Model:
Refer to DIAGNOSIS SYSTEM [11/2018 - 02/2019] , or refer to DIAGNOSIS SYSTEM [02/2019 - 10/2019] , or refer to DIAGNOSIS SYSTEM [10/2019 - 08/2020] , or refer to DIAGNOSIS SYSTEM [08/2020 - 12/2021]
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 [11/2018 - 02/2019] , or 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 4
- Using the Techstream, check if the CAN communication system is functioning normally.
- CHECK FOR DTC*
- Check for DTCs.
Refer to DTC CHECK / CLEAR [11/2018 - 12/2021]
Chassis > Front Recognition Camera > Trouble Codes
Result
Result Proceed to DTCs are not output A DTC C1AA8-00 is output B A DTC other than C1AA8-00 is output C
Result:
B
GO TO DTC CHART (C1AA8-00). Refer to DTC C1AA8-00: Front Recognition Camera Optical Axis Misalignment Malfunction [11/2018 - 12/2021]
Result:
C
See step 7
Result:
A
See step 5
- Check for DTCs.
- CHECK FOR VEHICLE CONTROL HISTORY*
- Check for vehicle control history and note any codes that are output.
Refer to VEHICLE CONTROL HISTORY [11/2018 - 12/2021]
Chassis > Front Recognition Camera > Utility
Tester Display Vehicle Control History (RoB) - Record the vehicle control history.
Result
Result Proceed to Vehicle control history is not output A Vehicle control history other than X2015 and X201C is output X2015 or X201C is output B
Result:
B
GO TO VEHICLE CONTROL HISTORY. Refer to VEHICLE CONTROL HISTORY [11/2018 - 12/2021]
Result:
A
See step 6
- Check for vehicle control history and note any codes that are output.
- CHECK FOR VEHICLE CONTROL HISTORY*
- Clear the vehicle control history.
Refer to VEHICLE CONTROL HISTORY [11/2018 - 12/2021]
Body Electrical > Front Radar Sensor > Utility
Tester Display Vehicle Control History (RoB) - Recheck for vehicle control history.
- Check if the following vehicle control history is output.
Refer to VEHICLE CONTROL HISTORY [11/2018 - 12/2021]
Chassis > Front Recognition Camera > Utility
Tester Display Vehicle Control History (RoB)
Result
Result Proceed to Vehicle control history is not output A Vehicle control history is output B - Check if the following vehicle control history is output.
Result:
A
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]
Result:
B
GO TO VEHICLE CONTROL HISTORY. Refer to VEHICLE CONTROL HISTORY [11/2018 - 12/2021]
- Clear the vehicle control history.
- CHECK FOR DTC*
- Clear the DTCs.
Refer to DTC CHECK / CLEAR [11/2018 - 12/2021]
Chassis > Front Recognition Camera > Clear DTCs
- Reproduce the detection conditions of the recorded DTC.
HINT:
Refer to the flowchart for the detection conditions for each of the DTCs.
Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2018 - 06/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [06/2020 - 08/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2020 - 12/2021]
- Recheck for DTCs.
- Attempt to duplicate the malfunction and check if the DTCs are output again.
Refer to DTC CHECK / CLEAR [11/2018 - 12/2021]
Chassis > Front Recognition Camera > Trouble Codes
Result
Result Proceed to DTCs are not output A DTC is output B - Attempt to duplicate the malfunction and check if the DTCs are output again.
Result:
A
See step 5
Result:
B
GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2018 - 06/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [06/2020 - 08/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2020 - 12/2021]
- Clear the DTCs.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.