PRE-COLLISION SYSTEM

DTC Code	DTC Name
	HOW TO PROCEED WITH TROUBLESHOOTING

VEHICLE BROUGHT TO WORKSHOP

Result

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CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK

Pre-collision System Customer Problem Analysis					Vehicle Brought to Workshop
Pre-collision System Customer Problem Analysis					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
Customer Concerns (Include details)		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)
DTC		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
	Tire pressure inspection result	Rear: LH ( ) kPa RH ( ) kPa Standard ( ) kPa
	Sensor optical axis inspection result	Forward recognition camera			Accident history	Y / N
	Sensor optical axis inspection result	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.

Result

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INSPECT AUXILIARY BATTERY VOLTAGE

Measure the auxiliary battery voltage with the power 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

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

Adjust the reflector height.

Click here
Place the reflector.

Click here
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Turn the cruise control main switch on.
Enter the following menus: Body Electrical / Pre-Collision 2 / Utility / Front Beam Axis Misalignment Reading.
Check the amount of misalignment and make a note.

Body Electrical > Pre-Collision 2 > Utility

Tester Display

Front Beam Axis Misalignment Reading
Enter the following menus: Body Electrical / Pre-Collision 2 / Utility / Front Beam Axis Offset Reading.
Check the amount of misalignment and make a note.

Body Electrical > Pre-Collision 2 > Utility

Tester Display

Front Beam Axis Offset Reading

Tester Display
Front Beam Axis Misalignment Reading

Tester Display
Front Beam Axis Offset Reading

Calculate the "Dealership Axis Offset Angle (with On-line Calibration Angle)" using the values "Front Beam Axis Misalignment Reading" and "Front Beam Axis Offset Reading".

"Dealership Axis Offset Angle (with On-line Calibration Angle)" = "Front Beam Axis Misalignment Reading" - "Front Beam Axis Offset Reading"

Standard

Dealership Axis Offset Angle (with On-line Calibration Angle)

Vertical	-2.2 to 1.6 deg.
Horizontal	-0.6 to 0.6 deg.

Result

Result	Proceed to
The dealership axis offset angle (with on-line calibration angle) is within the specified range.	A
The dealership axis offset angle (with on-line calibration angle) is not within the specified range.	B

B

ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY Click here

A

CHECK CAN COMMUNICATION SYSTEM*

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

Tech Tips

Refer to CAN Bus Check in CAN Communication System.

Click here

OK
CAN communication system is functioning normally.

Result

Proceed to
OK
NG

NG

GO TO CAN COMMUNICATION SYSTEM Click here

OK

INSPECT WARNING LIGHT

Check the condition of the warning lights on the combination meter assembly.

Result

Result	Proceed to
Only the PCS warning light is illuminated	A
The PCS warning light is not illuminated	A
The PCS warning light and other warning lights are illuminated or blinking	B

B

GO TO MALFUNCTIONING SYSTEM

A

INSPECT MULTI-INFORMATION DISPLAY

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 Click here

C

CHECK CONDITIONS WHEN PRE-COLLISION SYSTEM DID NOT OPERATE Click here

A

CHECK FOR DTCs* (PRE-COLLISION SYSTEM)

Tech Tips

Refer to DTC Check / Clear.

Click here

Check for DTCs and note any codes that are output.

Body Electrical > Pre-Collision 2 > Trouble Codes
Clear the DTCs.

Body Electrical > Pre-Collision 2 > Clear DTCs

Recheck for DTCs.

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

Body Electrical > Pre-Collision 2 > Trouble Codes

Result

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 Click here

C

GO TO DTC CHART Click here

A

PROBLEM SYMPTOMS TABLE

Tech Tips

Refer to Problem Symptoms Table.

Click here

Result

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 Click here

A

OVERALL ANALYSIS AND TROUBLESHOOTING*

Terminals of ECU

Click here

Data List / Active Test

Click here

Result

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ADJUST, REPAIR OR REPLACE

Note

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

Result

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CONFIRMATION TEST

Result

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END

ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY

Perform millimeter wave radar sensor assembly adjustment.

Click here

Result

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GO TO STEP 5 Click here

PRE-COLLISION SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING