Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM100000001RX3G
Model Year Start: 2021 Model: Camry HV Prod Date Range: [10/2020 -           ]
Title: PRE-COLLISION: PRE-COLLISION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2021 - 2024 MY Camry HV [10/2020 -        ]

HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

HINT:

  • Use these procedures to troubleshoot the pre-collision system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK

Pre-collision System Customer Problem Analysis

Vehicle Brought to Workshop

Year

Month

Day

Dealer name

 

Person in charge at headquarters

 

Telephone number

 

Shop name

 

Person in charge at shop

 

Frame type

 

Frame No.

 

First Registered Year

 

Total distance traveled

 

Customer Concerns (Include details)

Does not operate

Operates abnormally

Date of malfunction occurrence (Since when)

Year

Month

Day

Approx. Time

Date of last inspection

Year

Month

Day

Frequency of problem symptoms

Once / Occasionally (times per day, times per month) / Every time certain conditions are met ( )

Weather

Sunny / Cloudy / Rain / Snow (Amount of snowfall cm) / Other ( )

Vehicle speed

Approximately ( ) km/h

Place

Prefecture/State/Providence

(Attach a map if possible)

Driving path (where vehicle turned, where driver attempted to drive to, etc.)

* Describe the conditions immediately after the occurrence in as much detail as possible.

Conditions of Occurrence Diagram

Surrounding road conditions

Describe whether there were any billboards, metal objects on the road (manholes), guardrails, pipes, cat's eyes, gate bars, etc.

Urban area / Suburbs / Highway / Other ( )

Road surface conditions

Temperature

About °C ( °F)

Direction of travel

Straight / Right turn / Left turn / Right curve / Left curve

Snow wall(s)

Y / N

Driving lane

Number of lanes on one side (lanes) / ( ) lane(s) from left

Backlighting

Y / N

Condition of external area around detection sensor

No foreign matter / Foreign matter (water, snow, ice, other)

Additional information about condition of vehicle exterior (other than above)

 

DTC

First Time (when vehicle brought to workshop)

 

Second Time (after clearing DTC)

 

Status of operation switch

Pre-collision system cancel switch

Far / Medium / Near / OFF

VSC OFF switch

ON / OFF

Serial number of main part

* Fill in when removing, installing or replacing part

Forward recognition camera

 

Describe the items to the right in as much detail as possible.

Driver operation

Accelerator pedal operated / Brake pedal operated / Steering wheel operated

Time elapsed after hybrid system or engine was started

Approximately ( ) minutes

Tire pressure inspection result

Front: LH ( ) kPa RH ( ) kPa Standard ( ) kPa

Rear: LH ( ) kPa RH ( ) kPa Standard ( ) kPa

Sensor optical axis inspection result

Forward recognition camera

Accident history

Y / N

Millimeter wave radar sensor assembly

Accident history

Y / N

Vehicle modified

Y ( ) / N

Items installed or attached around windshield glass

Drive recorder* / Radar detector / Navigation unit (genuine/non-genuine) / ETC / Charms or toys / Other:

*: As information regarding the item is important for the investigation, make sure to obtain the item if permission is given by the customer.

NEXT

3.

PRE-CHECK

(a) Measure the auxiliary battery voltage with the power switch off.

Standard voltage:

11 to 14 V

HINT:

If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

(b) Check the fuses and relays.

(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

NEXT

4.

CHECK MULTI-INFORMATION DISPLAY

(a) 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 warning message is displayed, check in the order of A, B, C, D and E.

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

Pre-collision system warning message is not displayed

E

A

GO TO PROBLEM SYMPTOMS TABLE

C

GO TO STEP 10

D

GO TO STEP 7

E

GO TO STEP 14

B

5.

CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, check for CAN communication system DTCs.

Click here 2021 MY Camry HV [10/2020 - 08/2021]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM 2022 - 2024 MY Camry HV [08/2021 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM

Result

Proceed to

CAN DTCs are not output

A

CAN DTCs are output

B

B

GO TO CAN COMMUNICATION SYSTEM

A

6.

CHECK FOR DTCs*

(a) Check for DTCs.

Body Electrical > Pre-Collision System > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTC (C142571) is output

B

A DTC other than (C142571) is output

C

B

GO TO DTC CHART (C142571)

C

GO TO STEP 9

A

7.

CHECK VEHICLE CONTROL HISTORY*

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

Body Electrical > Pre-Collision System > Utility

Tester Display

Vehicle Control History (RoB)

(b) If the Vehicle Control History (RoB) is output, record it.

Result

Proceed to

Vehicle control history is not output

A

Vehicle control history (X2013, X2015, X2022, X2025, X2026 or X2028) is output

B

Vehicle control history other than (X2013, X2015, X2022, X2025, X2026 and X2028) is output

C

A

USE SIMULATION METHOD TO CHECK 2021 MY Camry HV [10/2020 - 08/2021]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2022 - 2024 MY Camry HV [08/2021 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING

B

GO TO VEHICLE CONTROL HISTORY

C

8.

RECHECK VEHICLE CONTROL HISTORY*

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

Body Electrical > Pre-Collision System > Utility

Tester Display

Vehicle Control History (RoB)

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

Body Electrical > Pre-Collision System > Utility

Tester Display

Vehicle Control History (RoB)

Result

Proceed to

Vehicle Control History (RoB) is not output

A

Vehicle Control History (RoB) is output

B

A

USE SIMULATION METHOD TO CHECK 2021 MY Camry HV [10/2020 - 08/2021]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2022 - 2024 MY Camry HV [08/2021 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING

B

GO TO VEHICLE CONTROL HISTORY

9.

CHECK FOR DTCs*

(a) Using the Techstream, clear the DTCs.

Body Electrical > Pre-Collision System > Clear DTCs

(b) 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.

(c) Using the Techstream, check if the DTCs are output again.

Body Electrical > Pre-Collision System > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTCs are output

B

A

USE SIMULATION METHOD TO CHECK 2021 MY Camry HV [10/2020 - 08/2021]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2022 - 2024 MY Camry HV [08/2021 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

10.

CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY

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

HINT:

Check that the following situations do not occur.

  • 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 between the radar sensor cover and millimeter wave radar sensor assembly

(b) Clean away any dirt or foreign matter that is adhering to the area around the millimeter wave radar sensor assembly.

NEXT

11.

CHECK MULTI-INFORMATION DISPLAY

NOTICE:

Before inspecting the multi-information display, be sure to first turn the power switch off and then on (IG) again.

(a) Turn the power switch off.

(b) Turn the power switch on (IG).

(c) Check whether "Pre-Collision System Radar Sensor Blocked Unavailable Clean Radar Sensor" is displayed on the multi-information display.

Result

Proceed to

Not displayed

A

Displayed

B

B

ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY

Triangle Target: Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: TARGET ADJUSTMENT(TRIANGLE TARGET)

Flat Surface Target: Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: TARGET ADJUSTMENT(FLAT SURFACE TARGET)

Driving Adjustment: Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: DRIVING ADJUSTMENT

A

12.

READ VALUE USING TECHSTREAM (ON-LINE CALIBRATION ANGLE (HORIZONTAL))

(a) 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)

-12.8 to 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 -0.5 to 0.5 deg.

NG

ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY

Triangle Target: Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: TARGET ADJUSTMENT(TRIANGLE TARGET)

Flat Surface Target: Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: TARGET ADJUSTMENT(FLAT SURFACE TARGET)

Driving Adjustment: Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: DRIVING ADJUSTMENT

OK

13.

EXPLAIN TO CUSTOMER

(a) 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.

NEXT

END

14.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; PRE-COLLISION: PRE-COLLISION SYSTEM: PROBLEM SYMPTOMS TABLE

Result

Proceed to

Fault is not listed in Problem Symptoms Table

A

Fault is listed in Problem Symptoms Table

B

B

GO TO PROBLEM SYMPTOMS TABLE

A

15.

CHECK PCS WARNING LIGHT

(a) Check the condition of the PCS warning light.

Result

Proceed to

Only the PCS warning light is illuminated

A

The PCS warning light is not illuminated

B

B

GO TO STEP 17

A

16.

CHECK VEHICLE CONTROL HISTORY* (X2015)

(a) Check for vehicle control history and note any codes that are output.

Body Electrical > Pre-Collision System > Utility

Tester Display

Vehicle Control History (RoB)

NEXT

GO TO VEHICLE CONTROL HISTORY

17.

CHECK FOR DTCs*

(a) Check for DTCs.

Body Electrical > Pre-Collision System > Trouble Codes

Result

Proceed to

DTCs are output

A

DTCs are not output

B

B

GO TO STEP 19

A

18.

CHECK CONFIRMED DTC DETECTION CONDITION*

(a) Check detection condition for the confirmed pre-collision system DTC.

Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; PRE-COLLISION: PRE-COLLISION SYSTEM: FAIL-SAFE CHART

NEXT

END

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

19.

CHECK VEHICLE CONTROL HISTORY*

(a) 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

Proceed to

Vehicle control history is not output

A

Vehicle control history is output

B

B

GO TO STEP 22

A

20.

CONDITIONS WHEN PRE-COLLISION SYSTEM OPERATE OR NOT OPERATE

(a) Check the conditions when pre-collision system operates or does not operate.

Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; PRE-COLLISION: PRE-COLLISION SYSTEM: PRECAUTION

Result

Proceed to

No condition is met

A

Any condition is met

B

B

END (OPERATION/NO OPERATION CONDITIONS OF PRE-COLLISION SYSTEM IS MET)

A

21.

INSPECT MILLIMETER WAVE RADAR SENSOR ASSEMBLY* (FRONT BEAM AXIS MISALIGNMENT READING)

NOTICE:

Before performing beam axis adjustment, check the fitting of the front bumper cover and radiator grille assembly and confirm that there is no warping or deformation.

(a) Adjust the reflector height.

Triangle Target: Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: TARGET ADJUSTMENT(TRIANGLE TARGET)

Flat Surface Target: Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: TARGET ADJUSTMENT(FLAT SURFACE TARGET)

(b) Place the reflector.

Triangle Target: Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: TARGET ADJUSTMENT(TRIANGLE TARGET)

Flat Surface Target: Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: TARGET ADJUSTMENT(FLAT SURFACE TARGET)

(c) Turn the cruise control main switch on.

(d) Check the amount of misalignment and make a note.

Body Electrical > Front Radar Sensor > Utility

Tester Display

Front Beam Axis Misalignment Reading

Standard (before performing adjustment):

Front beam axis misalignment value

Vertical

-5.0 to 5.0 deg.

Horizontal

-0.6 to 0.6 deg.

Result

Proceed to

Front beam axis misalignment value is within the specified range

A

Front beam axis misalignment value is not within the specified range

B

A

USE SIMULATION METHOD TO CHECK 2021 MY Camry HV [10/2020 - 08/2021]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2022 - 2024 MY Camry HV [08/2021 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING

B

PERFORM FRONT BEAM AXIS ADJUSTMENT

Triangle Target: Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: TARGET ADJUSTMENT(TRIANGLE TARGET)

Flat Surface Target: Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: TARGET ADJUSTMENT(FLAT SURFACE TARGET)

Driving Adjustment: Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: DRIVING ADJUSTMENT

22.

CHECK VEHICLE CONTROL HISTORY* (PRE-COLLISION SYSTEM)

(a) Check for vehicle control history and note any codes that are output.

Click here 2021 - 2024 MY Camry HV [10/2020 -        ]; PRE-COLLISION: PRE-COLLISION SYSTEM: VEHICLE CONTROL HISTORY

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.

NEXT

END

(a) Explain to the customer the cause of the previously stored vehicle control history and that the output reason has been cleared.

NOTICE:

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

Body Electrical > Pre-Collision System > Utility

Tester Display

Vehicle Control History (RoB)