How To Proceed With Troubleshooting [07/2022 - ]: Procedure

Result

Result: 

NEXT 

See step  2

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

   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.

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  3

1. Check if a pre-collision system warning message is displayed on the multi-information display in the combination meter assembly.

   HINT: 

   If more than one message is displayed, perform each inspection in the order listed in the table.

   Result

   Result	Proceed to
   "VSC Turned Off Pre-Collision Brake System Unavailable" is displayed	A
   "Pre-Collision System Malfunction Visit Your Dealer" is displayed	B
   "Pre-Collision System Radar Sensor Blocked Unavailable Clean Radar Sensor" is displayed	C
   Any of the following messages is displayed: "Pre-Collision System Unavailable See Owner's Manual" "Pre-Collision System Out of Temperature Range Unavailable See Owner's Manual" "Pre-Collision System Radar In Self Calibration Unavailable See Owner's Manual" "Front Camera Out of Temperature Range Unavailable Wait until Normal Temperature" "Front Camera Low Visibility Unavailable See Owner's Manual" "Front Camera Unavailable See Owner's Manual"	D
   Warning message is not displayed	E

Result: 

A 

GO TO PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [07/2022 - ]  

Result: 

C 

See step  9

Result: 

D 

See step  6

Result: 

E 

See step  13

Result: 

B 

See step  4

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

   HINT: 

   Refer to CAN Bus Check in CAN Communication System.

   Refer to DIAGNOSIS SYSTEM [07/2022 - ]

   OK

   CAN communication system is functioning normally.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ] 

Result: 

OK 

See step  5

1. Using the Techstream, check for DTCs.

   Body Electrical > Pre-Collision System > Trouble Codes 

2. Make a note of the output DTCs.

   Result

   Result	Proceed to
   DTCs are not output	A
   DTC C142571 is output	B
   DTCs other than C142571 are output	C

Result: 

B 

GO TO DTC CHART (C142571). Refer to  DTC C1425-71: Stop Light Relay Actuator Stuck [07/2022 - ] 

Result: 

C 

See step  8

Result: 

A 

See step  6

1. Using the Techstream, check for Vehicle Control History (RoB).

   Body Electrical > Pre-Collision System > Utility 

   Tester Display
   Vehicle Control History (RoB)

2. Record any output Vehicle Control History (RoB).

   Result

   Result	Proceed to
   Vehicle Control History (RoB) codes are not output	A
   Vehicle Control History (RoB) code X2013, X2015, X2022, X2025, X2026 or X2028 is output	B
   Vehicle Control History (RoB) codes other than X2013, X2015, X2022, X2025, X2026 and X2028 are output	C

Result: 

A 

GO TO SYMPTOM SIMULATION. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ] 

Result: 

B 

GO TO VEHICLE CONTROL HISTORY (X2013, X2015, X2022, X2025, X2026 or X2028). Refer to  VEHICLE CONTROL HISTORY [07/2022 - ] 

Result: 

C 

See step  7

1. Using the Techstream, clear the Vehicle Control History (RoB).

   Body Electrical > Pre-Collision System > Utility 

   Tester Display
   Vehicle Control History (RoB)

2. Using the Techstream, check for Vehicle Control History (RoB).

   Body Electrical > Pre-Collision System > Utility 

   Tester Display
   Vehicle Control History (RoB)

   Result

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

Result: 

A 

GO TO SYMPTOM SIMULATION. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ] 

Result: 

B 

GO TO VEHICLE CONTROL HISTORY. Refer to  VEHICLE CONTROL HISTORY [07/2022 - ] 

1. Using the Techstream, clear the DTCs.

   Body Electrical > Pre-Collision System > Clear DTCs 

2. Reproduce the vehicle conditions that were present when the DTCs that were noted were stored.

   HINT: 

   Refer to each corresponding DTC for details on the detection conditions.

   Refer to DIAGNOSTIC TROUBLE CODE CHART [07/2022 - ] 

3. Using the Techstream, check for DTCs.

   Body Electrical > Pre-Collision System > Trouble Codes 

   Result

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

Result: 

A 

GO TO SYMPTOM SIMULATION. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ] 

Result: 

B 

GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [07/2022 - ]  

1. Check whether the millimeter wave radar sensor assembly and surrounding area is dirty or obstructed by foreign matter.

   HINT: 

   • A non-genuine radar sensor cover is installed
   • The millimeter wave radar sensor assembly or radar sensor cover and its surrounding area are dirty
   • An accessory, such as bull bars, a grille guard, etc., which interferes with millimeter radio waves is installed
   • The radar sensor cover or its surrounding area has been painted or has a sticker attached
   • There is foreign matter attached to or between the radar sensor cover or millimeter wave radar sensor assembly
2. Clean away any dirt or foreign matter that is adhering to the area around the millimeter wave radar sensor assembly.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  10

1. Turn the ignition switch off.
2. Turn the ignition switch ON.
3. Check whether "Pre-Collision System Radar Sensor Blocked Unavailable Clean Radar Sensor" is displayed on the multi-information display.

   Result

   Result	Proceed to
   Not displayed	A
   Displayed	B

Result: 

B 

ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY 

Triangle Target: Refer to TARGET ADJUSTMENT(TRIANGLE TARGET) [07/2022 - ]

Flat Surface Target: Refer to TARGET ADJUSTMENT(FLAT SURFACE TARGET) [07/2022 - ]

Driving Adjustment: Refer to DRIVING ADJUSTMENT [07/2022 - ]

Result: 

A 

See step  11

1. Using the Techstream, read the following Data List items for the front radar system.

   Body Electrical > Front Radar Sensor > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   On-Line Calibration Angle (Horizontal)	Calibrated angle value (horizontal)	Min.: -12.8 deg, Max.: 12.7 deg	Learned value	-

   Body Electrical > Front Radar Sensor > Data List 

   Tester Display
   On-Line Calibration Angle (Horizontal)

   Standard

   The value displayed is less than -0.6 to 0.6 deg.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY 

Triangle Target: Refer to TARGET ADJUSTMENT(TRIANGLE TARGET) [07/2022 - ]

Flat Surface Target: Refer to TARGET ADJUSTMENT(FLAT SURFACE TARGET) [07/2022 - ]

Driving Adjustment: Refer to DRIVING ADJUSTMENT [07/2022 - ]

Result: 

OK 

See step  12

1. Explain to the customer that the "Pre-Collision System Radar Sensor Blocked Unavailable Clean Radar Sensor" message on the multi-information display was caused by dirt or foreign matter adhering to the area around the millimeter wave radar sensor assembly, and that the situation has been corrected.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

END 

1. Refer to Problem Symptoms Table.

   Refer to PROBLEM SYMPTOMS TABLE [07/2022 - ] 

   Result

   Result	Proceed to
   Fault is not listed in Problem Symptoms Table	A
   Fault is listed in Problem Symptoms Table	B

Result: 

B 

GO TO PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [07/2022 - ]  

Result: 

A 

See step  14

1. Check the condition of the PCS warning light.

   Result

   Result	Proceed to
   Only the PCS warning light is illuminated	A
   The PCS warning light is not illuminated	B

Result: 

B 

See step  16

Result: 

A 

See step  15

1. Check for vehicle control history and note any codes that are output.

   Body Electrical > Pre-Collision System > Utility 

   Tester Display
   Vehicle Control History (RoB)

   Result

   Proceed to
   NEXT

Result: 

NEXT 

GO TO VEHICLE CONTROL HISTORY. Refer to  VEHICLE CONTROL HISTORY [07/2022 - ] 

1. Check for DTCs.

   Body Electrical > Pre-Collision System > Trouble Codes 

   Result

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

Result: 

B 

See step  18

Result: 

A 

See step  17

1. Check detection condition for the confirmed pre-collision system DTC.

   Refer to FAIL-SAFE CHART [07/2022 - ] 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

END 

Explain to the customer the cause of the previously stored DTC and that the output reason has been cleared.

1. Check for vehicle control history and note any codes that are output.

   Body Electrical > Pre-Collision System > Utility 

   Tester Display
   Vehicle Control History (RoB)

   1. Record the vehicle control history.

   Result

   Result	Proceed to
   Vehicle control history is not output	A
   Vehicle control history is output	B

Result: 

B 

See step  21

Result: 

A 

See step  19

1. Check if the exception conditions for the pre-collision system were met.

   Refer to PRECAUTION [07/2022 - ] 

   Result

   Result	Proceed to
   The exception conditions were not met.	A
   The exception conditions were met.	B

Result: 

B 

END (The pre-collision system operated accordingly with the operation and prohibition conditions.) 

Result: 

A 

See step  20

1. Adjust the reflector height.

   Triangle Target: Refer to TARGET ADJUSTMENT(TRIANGLE TARGET) [07/2022 - ]

   Flat Surface Target: Refer to TARGET ADJUSTMENT(FLAT SURFACE TARGET) [07/2022 - ]

2. Place the reflector.

   Triangle Target: Refer to TARGET ADJUSTMENT(TRIANGLE TARGET) [07/2022 - ]

   Flat Surface Target: Refer to TARGET ADJUSTMENT(FLAT SURFACE TARGET) [07/2022 - ]

3. Connect the Techstream to the DLC3.
4. Turn the ignition switch to ON.
5. Turn the Techstream on.
6. Enter the following menus: Body Electrical / Front Radar Sensor / Utility / Front Beam Axis Misalignment Reading.

   Body Electrical > Front Radar Sensor > Utility 

   Tester Display
   Front Beam Axis Misalignment Reading

7. Check the amount of misalignment.

   Standard

   Vertical Direction	-5 to 5 deg.
   Horizontal Direction	-0.6 to 0.6 deg.

   HINT: 

   The millimeter wave radar sensor assembly automatically calibrates the beam axis while the vehicle is being driven. The specified values apply to the automatic calibration only and do not apply during manual beam axis adjustment of the millimeter wave radar sensor assembly.

   Result

   Result	Proceed to
   The beam axis values are within specification.	A
   The beam axis values are not within specification.	B

Result: 

A 

GO TO SYMPTOM SIMULATION. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ] 

Result: 

B 

ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY 

Triangle Target: Refer to TARGET ADJUSTMENT(TRIANGLE TARGET) [07/2022 - ]

Flat Surface Target: Refer to TARGET ADJUSTMENT(FLAT SURFACE TARGET) [07/2022 - ]

Driving Adjustment: Refer to DRIVING ADJUSTMENT [07/2022 - ]

1. Check for vehicle control history and note any codes that are output.

   Refer to VEHICLE CONTROL HISTORY [07/2022 - ]

   HINT: 

   Based on the customer's inquiry, check the corresponding factors in the vehicle control history, such as the detection time and date, trip information and elapsed time.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

END 

1. Explain to the customer the cause of the previously stored vehicle control history and that the output reason has been cleared.
   NOTE:

   After the explanation, make sure to clear vehicle control history.

   Body Electrical > Pre-Collision System > Utility 

   Tester Display
   Vehicle Control History (RoB)