Toyota Yaris: Pre-collision System / How To Proceed With Troubleshooting

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Vehicle Interior / Pre-collision / Pre-collision System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the pre-collision system.
  • *: Use the GTS.

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 switch

Early / Mid(Middle) / Late / 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 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.

HINT:

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

Standard Voltage:

11 to 14 V (Ignition switch off)

(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.

INSPECT 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 and D.

Result

Proceed to

"VSC Turned Off Pre-Collision Brake System Unavailable" is displayed

A

"Pre-Collision System Malfunction Visit Your Dealer" is displayed

B

Any of the following messages is displayed:

  • "Pre-Collision System Unavailable See Owner's Manual"
  • "Pre-Collision System Radar In Self Calibration Unavailable See Owner's Manual"
  • "Pre-Collision System Out of Temperature Range Unavailable See Owner's Manual"
  • "Pre-Collision System Radar Sensor Blocked Unavailable Clean Radar Sensor"
  • "Front Camera 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"

C

Warning message is not displayed

D

A

GO TO PROBLEM SYMPTOMS TABLE

C

GO TO STEP 7

D

GO TO STEP 10

B

5.

CHECK CAN COMMUNICATION SYSTEM*

(a) Using the GTS, check if the CAN communication system is functioning normally.

HINT:

Refer to CAN Bus Check in CAN Communication System.

Click here

CAN Bus Check

OK:

CAN communication system is functioning normally.

NG

GO TO CAN COMMUNICATION SYSTEM

OK

6.

CHECK FOR DTCs*

(a) Using the GTS, check for DTCs.

Body Electrical > Pre-Collision System > Trouble Codes

(b) Make a note of the output DTCs.

Result

Proceed to

DTCs are not output

A

DTC C142571 is output

B

DTCs other than C142571 are output

C

B

GO TO DTC CHART (C142571)

C

GO TO STEP 9

A

7.

CHECK VEHICLE CONTROL HISTORY*

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

Body Electrical > Pre-Collision System > Utility

Tester Display

Vehicle Control History (RoB)

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

Result

Proceed to

Vehicle Control History (RoB) codes are not output

A

Vehicle Control History (RoB) code X2015, X2016, X2017, X2024, X2026, X2027, X2028 or X202B is output

B

Vehicle Control History (RoB) codes other than X2015, X2016, X2017, X2024, X2026, X2027, X2028 and X202B are output

C

A

GO TO SYMPTOM SIMULATION

B

GO TO VEHICLE CONTROL HISTORY

C

8.

RECONFIRM VEHICLE CONTROL HISTORY*

(a) Clear the Vehicle Control History (RoB).

Body Electrical > Pre-Collision System > Utility

Tester Display

Vehicle Control History (RoB)

(b) Recheck for Vehicle Control History (RoB).

(1) Check if the following Vehicle Control History (RoB) is output.

Body Electrical > Pre-Collision System > Utility

Tester Display

Vehicle Control History (RoB)

Result

Proceed to

Vehicle Control History codes (RoB) are not output

A

Vehicle Control History codes (RoB) are output

B

A

GO TO SYMPTOM SIMULATION

B

GO TO VEHICLE CONTROL HISTORY

9.

RECONFIRM DTC OUTPUT*

(a) Clear the DTCs.

Body Electrical > Pre-Collision System > Clear DTCs

(b) Reproduce the detection conditions of the recorded DTC.

HINT:

Refer to the flowchart for the detection conditions for each of the DTCs.

(c) Recheck for DTCs.

(1) Attempt to duplicate the malfunction and 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

GO TO SYMPTOM SIMULATION

B

GO TO DTC CHART

10.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table for the pre-collision system.

Click here

Result

Proceed to

Problem symptoms are not listed in the Problem Symptoms Table.

A

Problem symptoms are listed in the Problem Symptoms Table.

B

B

GO TO PROBLEM SYMPTOMS TABLE

A

11.

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 13

A

12.

CHECK FOR 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

13.

CHECK FOR DTC* (PRE-COLLISION SYSTEM)

(a) Using the GTS, check for DTCs (Confirmed).

Body Electrical > Pre-Collision System > Trouble Codes

(b) Make a note of the output DTCs (Confirmed).

Result

Proceed to

DTC is output

A

DTCs are not output

B

B

GO TO STEP 15

A

14.

CHECK CONFIRMED DTC DETECTION CONDITION*

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

Click here

NEXT

END

15.

CHECK FOR VEHICLE CONTROL HISTORY* (PRE-COLLISION SYSTEM)

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

Click here

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 17

A

16.

CONDITIONS WHEN PRE-COLLISION SYSTEM OPERATE OR NOT OPERATE

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

Click here

Result

Proceed to

Any condition is met.

A

No condition is met.

B

A

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

B

GO TO STEP 18

17.

CHECK FOR VEHICLE CONTROL HISTORY* (PRE-COLLISION SYSTEM)

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

Click here

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

18.

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

NOTICE:

Before checking for millimeter wave radar sensor beam axis misalignment, make sure that the radiator grille and front bumper are correctly installed and have not been damaged or modified.

(a) Adjust the reflector height.

Triangle Target: Click here

Flat Surface Target: Click here

(b) Place the reflector.

Triangle Target: Click here

Flat Surface Target: Click here

(c) Using the GTS, check the amount of misalignment.

Body Electrical > Front Radar Sensor > Utility

Tester Display

Front Beam Axis Misalignment Reading

Standard:

Vertical Direction

-5 to 5 deg.

Horizontal Direction

-0.6 to 0.6 deg.

Result

Proceed to

The beam axis values are within specification.

A

The beam axis values are not within specification.

B

A

GO TO SYMPTOM SIMULATION

B

ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY

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