PRE-CRASH SAFETY 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-crash Safety System Customer Problem Analysis					Vehicle Brought to Workshop
Pre-crash Safety System Customer Problem Analysis					Year	Month	Day
Name		Registration No.			First Registered Year
Name		Vehicle Model			Frame No.
Customer Concerns
Problem symptoms first occurred		Year	Month	Day	Approx. Time
Frequency of problem symptoms		Continuously / Occasionally (times per day, times per month) / Only Once
Weather	Sunny / Cloudy / Rain / Snow / Other ( )			Temperature	About °C ( °F)
Place	Prefecture
Conditions	Urban area / Suburbs / Highway / Other ( )
Conditions	Direction of travel	Straight / Right turn / Left turn / Right curve / Left curve
	Driving lane	Number of lanes on one side (lanes) / ( ) lane(s) from left
	Lane width	m
	Details of driving conditions at time of occurrence (driving lane, driving route, position and type of surrounding vehicles, etc.)	*Please include detailed diagram on Additional Customer Problem Analysis Sheet
	Preceding vehicle	Y / N
	Vehicle running parallel	Y / N
	Following vehicle	Y / N
	Parked vehicles nearby	Y / N
	Construction	Y / N
	Road obstructions	Signs / Manhole / Guardrails / Other ( )
	Vehicle speed	km/h
	Automatic brakes operated	Unknown / Y / N		Seat belts tightened	Unknown / Y / N
	Intelligent headrest operated	Unknown / Y / N		Pre-crash seatback operated	Unknown / Y / N
	Hazard warning light blinking	Unknown / Y / N		PCS indicator	Unknown / Y / N
	Information display	Unknown / No display / "Brake!" message / "Check PCS System" message / "PCS temporarily not available" message / Other ( )
	Buzzer sounding	Unknown / Yes (long beep) / Yes (short beeps) / None
Vehicle Inspection Items	Tire pressure	Front: LH ( ) kPa RH ( ) kPa Standard ( ) kPa
	Tire pressure	Rear: LH ( ) kPa RH ( ) kPa Standard ( ) kPa
	Vehicle height	( ) mm Standard ( ) mm * Refer to "WHEEL ALIGNMENT ADJUSTMENT" in Repair Manual
	Front millimeter wave radar sensor beam axis	Vertical direction ( ) Standard: 0.2° upwards
	Front millimeter wave radar sensor beam axis	Horizontal direction ( ) Standard: 0°
	Rear millimeter wave radar sensor beam axis	Vertical direction ( ) Standard: 0.2° upwards
	Rear millimeter wave radar sensor beam axis	Horizontal direction ( ) Standard: 0°
	Front millimeter wave radar sensor RH beam axis	Vertical direction ( ) Standard: 0.2° upwards
	Front millimeter wave radar sensor RH beam axis	Horizontal direction ( ) Standard: 0°
	Front millimeter wave radar sensor LH beam axis	Vertical direction ( ) Standard: 0.2° upwards
	Front millimeter wave radar sensor LH beam axis	Horizontal direction ( ) Standard: 0°
	History of repairs around radar sensor	Yes (FR / RR / RH / LH) / No
	Retrieval of Vehicle Control History	Complete / Incomplete (Retrieval necessary) / Not equipped
	DTC / DATA LIST	First time (when vehicle brought to workshop)
		Second time (after DTCs cleared)
		History of dirt on rear radar sensor		Y / N	Front radar sensor high temperature history		Y / N
		History of dirt on front radar sensor		Y / N	Rear radar sensor high temperature history		Y / N
		History of dirt on front radar sensor RH		Y / N	Front radar sensor RH high temperature history		Y / N
		History of dirt on front radar sensor LH		Y / N	Front radar sensor LH high temperature history		Y / N
		Recognition camera image malfunction history		Y / N	Driver monitor image malfunction history		Y / N
		Pre-crash safety system switch condition		OFF / Far / Medium / Near	VSC OFF switch condition		ON / OFF
Other	Differences from standard vehicle	Tires / Wheels / Suspension / Other ( ) / None

Figure 1. Additional Customer Problem Analysis Sheet


*1	Conditions of Occurrence Diagram

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 (IG OFF)

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

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 switch (ON/OFF button) on.
Enter the following menus: Powertrain / Radar Cruise / Utility / Beam Axis Misalignment Reading.

Check the amount of misalignment and make a note.

Powertrain > Radar Cruise > Utility

Tester Display
Beam Axis Misalignment Reading

Result

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CHECK CAN COMMUNICATION SYSTEM*

Use the GTS to check if the CAN communication system is functioning normally.

for LHD: Click here

for RHD: Click here

Result

Result	Proceed to
CAN communication system DTCs are not output	A
CAN communication system DTCs are output (for LHD)	B
CAN communication system DTCs are output (for RHD)	C

B

GO TO CAN COMMUNICATION SYSTEM Click here

C

GO TO CAN COMMUNICATION SYSTEM Click here

A

CHECK FOR DTCs (PRE-CRASH 2)*

Clear the DTCs.

Click here

Body Electrical > Pre-Crash 2 > Clear DTCs

Check for DTCs.

Click here

Body Electrical > Pre-Crash 2 > Trouble Codes

Result

Result	Proceed to
DTCs are not output (symptoms can be confirmed or reproduced)	A
DTCs are not output (symptoms cannot be confirmed or reproduced)	B
DTCs are output	C

B

GO TO STEP 8 Click here

C

GO TO DIAGNOSTIC TROUBLE CODE 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

ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE

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

Tech Tips

Perform proper procedures according to corresponding faults listed in the problem symptoms table or the corresponding DTCs listed in the diagnostic trouble code chart.

Result

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Note

If the millimeter wave radar sensor assembly is replaced, the beam axis of the sensor needs to be adjusted.

Click here
If the driving support ECU assembly is replaced, initialization needs to be performed.

for LHD: Click here

for RHD: Click here

CONFIRMATION TEST

Result

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END

PRE-CRASH SAFETY SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING