Toyota CH-R Service Manual: How To Proceed With Troubleshooting

Toyota CH-R Service Manual / Pre-collision / Pre-collision System / 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

(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 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.

INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage.

Standard voltage:

11 to 14 V

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

NEXT

4.

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

(a) Adjust the reflector height.

Click here

(b) Place the reflector.

Click here

(c) Connect the Techstream to the DLC3.

(d) Turn the ignition switch to ON.

(e) Turn the Techstream on.

(f) Turn the cruise control main switch on.

(g) Enter the following menus: Body Electrical / Pre-Collision 2 / Utility / Front Beam Axis Misalignment Reading.

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

Body Electrical > Pre-Collision 2 > Utility

Tester Display

Front Beam Axis Misalignment Reading

(i) Enter the following menus: Body Electrical / Pre-Collision 2 / Utility / Front Beam Axis Offset Reading.

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

Body Electrical > Pre-Collision 2 > Utility

Tester Display

Front Beam Axis Offset Reading

NEXT

5.

CHECK CAN COMMUNICATION SYSTEM*

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

HINT:

Refer to CAN Bus Check in CAN Communication System.

Click here

OK:

CAN communication system is functioning normally.

NG

GO TO CAN COMMUNICATION SYSTEM

OK

6.

INSPECT WARNING LIGHT

(a) Check the condition of the warning lights on the combination meter assembly.

Result

Proceed to

Only the PCS warning light is blinking

A

The PCS warning light is not blinking

The PCS warning light and other warning lights are illuminated or blinking

B

B

GO TO MALFUNCTIONING SYSTEM

A

7.

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.

Result

Proceed to

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

A

Any of the following messages is displayed

  • "Pre-Collision System Unavailable"
  • "Pre-Collision System Unavailable Clean Sensor"
  • "Front Camera Unavailable"
  • "Front Camera Vision Blocked. Clean and Demist Windshield"

B

Warning message is not displayed

C

B

GO TO PROBLEM SYMPTOMS TABLE

C

CHECK CONDITIONS WHEN PRE-COLLISION SYSTEM DID NOT OPERATE

A

8.

CHECK FOR DTCs (PRE-COLLISION SYSTEM)

HINT:

Refer to DTC Check / Clear.

Click here

(a) Check for DTCs and note any codes that are output.

Body Electrical > Pre-Collision 2 > Trouble Codes

(b) Clear the DTCs.

Body Electrical > Pre-Collision 2 > Clear DTCs

(c) Recheck for DTCs.

(1) Attempt to duplicate the malfunction and check if the DTCs are output again.

Body Electrical > Pre-Collision 2 > Trouble Codes

Result

Proceed to

Malfunction is duplicated but DTCs are not output

A

Malfunction cannot be duplicated and DTCs are not output

B

DTCs are output

C

B

GO TO SYMPTOM SIMULATION

C

GO TO DTC CHART

A

9.

PROBLEM SYMPTOMS TABLE

HINT:

Refer to Problem Symptoms Table.

Click here

Result

Proceed to

Fault is not listed in Problem Symptoms Table

A

Fault is listed in Problem Symptoms Table

B

B

GO TO STEP 12

A

10.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU

Click here

(b) Data List / Active Test

Click here

NEXT

11.

ADJUST, REPAIR OR REPLACE

NOTICE:

When the millimeter wave radar sensor assembly is replaced with a new one, adjustment of the radar sensor beam axis must be performed.

Click here

NEXT

12.

CONFIRMATION TEST

NEXT

END

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